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ordering information device temp range package MC44BS373CAd,r2 ?20 to +85c so16nb MC44BS373CAfc,r2 ?20 to +85c qfn20 lead free MC44BS373CAef,r2 ?20 to +85c so16nb lead free note: for tape and reel, add r2 suffix. so16nb package qfn20 package MC44BS373CA the MC44BS373CA audio and video modulator is for use in vcrs, set-top boxes, and similar devices. ? supports multiple standards tv output level 82 db v typical 5- and 3.3-v compatible i 2 c bus figure 1 shows the pin connections for both package options. figure 1. MC44BS373CA pin connections gndd vccd xtal gnd tvovcc audio gnd pllfl t sda scl lop preem tvout vcca 1 2 3 4 5 678 20 19 18 17 spllflt video 910 11 12 13 14 15 16 cas auxin nc nc qfn20 package gndd vccd xtal gnd tvovcc audio gnd pllflt sda scl lop preem tvout vcca 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 spllflt video so16nb package technical data MC44BS373CA rev. 2.6, 6/2004 MC44BS373CA data sheet pll-tuned uhf and vhf audio/video high-integration modulator contents 1 features . . . . . . . . . . . . . . . . . . . . . . 2 2 comparing the MC44BS373CA to the mc44bc373/4c. . . . . . . . . . . . . . . . . 2 3 pin descriptions. . . . . . . . . . . . . . . . . 3 4 MC44BS373CA functional overview 5 5 maximum ratings . . . . . . . . . . . . . . . 6 6 thermal ratings . . . . . . . . . . . . . . . . 6 7 electrostatic discharge . . . . . . . . . . . 7 8 electrical characteristics . . . . . . . . . . 7 9 i2c bit mapping . . . . . . . . . . . . . . . . . 8 10 i2c programming . . . . . . . . . . . . . . 10 11 modulator high-frequency characteristics . . . . . . . . . . . . . . . . . 13 12 video characteristics. . . . . . . . . . . . 14 13 audio characteristics. . . . . . . . . . . . 16 14 characterization measurement conditions . . . . . . . . . . . . . . . . . . . . 17 15 MC44BS373CA modes of operation 22 16 high speed i2c compatible bus. . . 27 17 pin circuit schematics. . . . . . . . . . . 31 18 application diagrams. . . . . . . . . . . . 32 19 MC44BS373CA evaluation board schematic and layout . . . . . . . . . . . 36 20 packaging instructions . . . . . . . . . . 41 21 marking instructions . . . . . . . . . . . . 42 22 case outlines . . . . . . . . . . . . . . . . . 43 23 document revision history . . . . . . . 48
2 MC44BS373CA data sheet motorola features features 1 features the MC44BS373CA is a multi-standard, pal/secam/ntsc modulator. the channel is set by an on-chip high-speed i 2 c-compatible bus receiver. a phase-locked loop (pll) tunes the modulator over the full uhf range. the modulator incorporates a sound subcarrier oscillat or and uses a second pll to derive 4.5-, 5.5-, 6.0-, and 6.5-mhz subcarrier frequencies. these frequencies are selectable by bus. the modulation standard can be chosen using a control bit that selects between positive and negative modulation. the picture-to-sound ratio may be adjusted using the bus. in addition, an on-chip video test pattern generator can be switched on with a 1-khz audio test signal. the MC44BS373CA also has the following features: integrated on-chip programmable uhf oscillator no external varicaps diodes/inductor or tuned components extremely low external component count channel 21?69 uhf operation vhf range possible by internal dividers (30?450 mhz) boosted tvout level (82 db v typical) high-speed read and write i 2 c bus compatible (800 khz) i 2 c address selectable by pin (four choices) using external resistor (available only in qfn20 package) i 2 c bus 5- and 3.3-v compatible fixed video modulation depth (93% typical in system l and 82% typical in the other standards) peak white clip disabled by bus programmable picture/sound carrier ratio (12 and 16 db) integrated on-chip programmable sound subcarrier oscillator (4.5, 5.5, 6.0 and 6.5 mhz)?no external varicaps programmable sound reference frequency (31.25 and 62.5 khz) direct rf sound modulator input (fm and am modulator bypassed) for nicam or stereo sound applications (available only in qfn20 package) on-chip video test pattern generator with sound test signal (1 khz) low-power programmable modulator standby mode transient output inhibit during pll lock-up at power-on logical output port controlled by bus esd protection, minimum 4 kv 2 comparing the MC44BS373CA to the mc44bc373/4c compared to the mc44bc373/4c devices, the MC44BS373CA has the following improvements: higher output level (82 versus 74.5 db v) higher video signal to noise (+3 db)
motorola MC44BS373CA data sheet 3 pin descriptions i 2 c bus 3.3-v compatible lower power consumption in normal and standby modes (?2 ma) can be powered down without holding down i 2 c lines tb1 bit no longer available (limited compatibility with mc44355 devices no longer available) new sref bit to program sound reference frequency (31.25 and 62.5 khz) four different i 2 c addresses selectable by single pin with external resistor (available only in qfn20 package) direct sound rf modulator (fm and am sound modulators bypassed) for nicam or stereo sound applications (available only in qfn20 package) switch between two integrated vcos controlled directly by frequency divider (at 700 mhz) lower rf second harmonic spurious but higher third harmonic spurious. in applications it is easier to filter uhf third harmonics spurious than second harmonics, as these frequencies are always out of the uhf band. unfortunately, the second harmonic can fall back into the same uhf band (for instance channel 21 second harmonic). for this reason, it is almost impossible to have a good rejection of low uhf second harmonic with an external low-pass filter. this is why the design has been optimized for maximum second harmonic rejection in spite of an increase in the third harmonic level. 3 pin descriptions this section describes the pins of the MC44BS373CA. first the 16-pin package will be considered, then the 20-pin package. 3.1 so16 package pin descriptions the pins of the 16-pin package are listed in table 1, along with a description of each. table 1. so16 package pin descriptions pin name description pin name description 1scli 2 c clock 9 video video input 2sdai 2 c data 10 vcca main analog supply voltage 3 lop logical output port controlled by i 2 c bus 11 gnd analog ground 4 xtal crystal 12 tvout tv output signal 5 gnd ground 13 tvovcc tv output stage supply voltage 6 preem pre-emphasis capacitor 14 pllflt rf pll loop filter 7 audio audio input 15 vccd digital supply voltage 8 spllflt sound pll loop filter 16 gndd digital ground
4 MC44BS373CA data sheet motorola pin descriptions pin descriptions 3.2 qfn20 package pin descriptions the pins of the 20-pin package are listed in table 2, along with a description of each. table 2. qfn20 package pin descriptions pin name description 1 lop logical output port controlled by i 2 c bus 2 cas chip address selection (external pull-down resistor or open) 3xtalcrystal 4 gnd ground 5 preem pre-emphasis capacitor 6 audio audio input 7 spllflt sound pll loop filter 8 auxin sound auxiliary input (sound fm and am modulators bypassed) 9 video video input 10 vcca main analog supply voltage 11 nc not connected 12 gnd analog ground 13 nc not connected 14 tvout tv output signal 15 tvovcc tv output stage supply voltage 16 pllflt rf pll loop filter 17 vccd digital supply voltage 18 gndd digital ground 19 scl i 2 c clock 20 sda i 2 c data
motorola MC44BS373CA data sheet 5 MC44BS373CA functional overview 4 MC44BS373CA functional overview figure 2 shows a simplified block diagram of the MC44BS373CA. figure 2. MC44BS373CA simplified block diagram the MC44BS373CA device has three main sections: a high-speed i 2 c-compatible bus section a pll section to synthesize the uhf/vhf output channel frequency (from an integrated uhf oscillator, divided for vhf output) a modulator section, which accepts audio and video inputs, then uses them to modulate the uhf/vhf carrier an on-chip video test pattern generator with an audio test signal is included. the MC44BS373CA operates as a multi-standard modulator and can handle the following systems using the same external circuit components: b/g, i, d/k, l, m/n. high-frequency bicmos technology allows integration of the uhf tank circuit and certain filtering functions. tvovcc tvout lop video spllflt audio vcca gnd preem xtal pllflt gndd vccd scl sda bus section vco and pll section modulator section clamp peak white l/bg 31.25/62.5 31.25 khz 4-mhz xco ref divider /128 phase comp pll prog divider prescaler/8 vhf dividers video modulator lpf lpf rf sound modulator l/bg fm am alc lpf prog divider am modulator audio amplifier sound oscillator and fm modulator sound pfd khz high speed i 2 c bus receiver uhf osc i 2 c bus i 2 c bus i 2 c bus i 2 c bus l/bg i 2 c bus 75 ? gnd clip auxin cas (only in qfn 20 ) (only in qfn 20)
6 MC44BS373CA data sheet motorola maximum ratings maximum ratings 5 maximum ratings table 3 lists the maximum ratings supported for operating conditions of the MC44BS373CA. note this device contains protection circuitry to guard against damage due to high-static voltage or electric fields. however, precautions must be taken to avoid applications of any voltages higher than maximum rated voltage to this high-impedance circuit. for proper operation, input and output voltages should be constrained to the ranges indicated in the recommended operating conditions. moisture sensitivity level ratings for the different packages are given in table 4. 6 thermal ratings table 5 lists the junction-to-ambient thermal resistance for both packages. table 3. maximum ratings 1 1 maximum ratings are those values beyond which damage to the device may occur. for functional operation, values should be restricted to the recommended operating conditions. symbol parameter value unit v cc supply voltage 6 v t amin minimum operating ambient temperature ?20 c t amax maximum operating ambient temperature +85 c t stgmin minimum storage temperature ?65 c t stgmax maximum storage temperature 150 c t j junction temperature 150 c table 4. moisture sensitivity level ratings (msl) package rating dry pack required MC44BS373CAd,r2 1 no MC44BS373CAfc,r2 lead free packages 3 yes MC44BS373CAef,r2 lead free packages 3 yes table 5. thermal resistance from junction to ambient symbol package value unit r thja so16nb 102 c/w r thja qfn20 120 c/w
motorola MC44BS373CA data sheet 7 electrostatic discharge 7 electrostatic discharge electrostatic discharge (esd) tests are carried out on all pins using mil std 883c method 3015-7. results are shown in table 6. s 8 electrical characteristics each of the operating conditions listed in table 7 is characterized as one of the following types: a?100% tested b?100% correlation tested c?characterized on samples d?design parameter see section 14, ?characterization measurement conditions,? for each c-type parameter. 8.1 operating conditions unless otherwise stated, v cc = 5.0v, ambient temperature = 25c, and video input is 1 vp-p, with 10-step grey scale and rf output into 75- ? load. note specifications are only valid for envelope demodulation. table 6. electrostatic discharge tests symbol parameter minimum unit esd mm (machine model) 400 v esd hbm (human body model) 4000 v table 7. operating conditions parameter condition minimum typical maximum unit type notes operating supply voltage range ? 4.5 5.0 5.5 v b total supply current 1 1 all sections active ?425058maa1 total standby mode supply current 2 2 osc = so = att = 1, bus section active. see section 15.3, ?standby mode.? ?357maa2 test pattern sync pulse width ? 3 4.7 6.5 sb sound comparator charge pump current during locking 7 10 12 aa when locked 0.7 1 1.5 rf comparator charge pump current ? 60 100 150 aa crystal oscillator stability-negative resistance ? 1 ? ? k ? d logic output port saturation voltage at i = 2 ma ? ? 160 300 mv a logic output port leakage current ? ? ? 1 a
8 MC44BS373CA data sheet motorola i2c bit mapping i2c bit mapping 9 i 2 c bit mapping table 8. i 2 c write-mode bit mapping write mode bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 ack chip address 1 1 0 0 1 see table 11. 0 ack c1?high-order bits 1 0 so lop ps x3 x2 sysl ack c0?low-order bits pwc osc att sfd1 sfd0 sref x5 x4 ack fm?high-order bits 0 tpen n11 n10 n9 n8 n7 n6 ack fl?low-order bits n5 n4 n3 n2 n1 n0 x1 x0 ack table 9. i 2 c read-mode bit mapping read mode bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 ack chip address 11001see table12.1ack r?status byte ?????y2y1oor? table 10. i 2 c bit mapping bit descriptions name description so sound oscillator on/off 0 sound oscillator on (normal mode) 1 sound oscillation disabled (oscillator and pll section bias turned off) lop logic output port 0 lop pin is low voltage. 1 lop pin is high impedance. ps picture-to-sound carrier ratio 0 picture-to-sound carrier ratio is 12 db. 1 picture-to-sound carrier ratio is 16 db. x0?x5 test mode bits note: all bits are 0 for normal operation. for further information, see table 17 and table 18. sysl system l enable?selects am sound and positive video modulation 0 system b/g enabled, system l disabled (fm sound and negative video modulation) 1 system l enabled, system b/g disabled (am sound and positive video modulation) pwc peak white clip enable/disable 0 peak white clip on (system b/g) 1 peak white clip off (system l) osc uhf oscillator on/off 0 normal operation 1 uhf oscillator disabled (oscillator and pll sections bias turned off) att modulator output attenuated-sound and video modulators on/off 0 normal operation 1 modulator output attenuation (sound and video modulators sections bias turned off)
motorola MC44BS373CA data sheet 9 i2c bit mapping table 11 and table 12 show how to select the i 2 c address. note the i 2 c address is also selectable via the cas pin. see section 16, ?high speed i 2 c compatible bus,? for more information. sfd1 sfd0 sound subcarrier frequency control bits sfd1 sfd0 frequency 00 4.5 01 5.5 10 6.0 11 6.5 sref sound pll reference frequency 0 sound reference frequency = 31.25 khz 1 sound reference frequency = 62.5 khz tpen test pattern enable-picture and sound 0 test pattern signal off (normal operation) 1 test pattern signal on (picture and sound) n0?n11 uhf frequency programming bits, in steps of 250 khz see section 15.7, ?uhf pll section,? for more information. y2 rf oscillator operating range information 0 high vco is active. 1 low vco is active. y1 rf oscillator operating range information 0 vco out of range, frequency too low. only valid if oor=1 1 vco out of range, frequency too high. only valid if oor=1 oor rf oscillator out-of-frequency range information 0 normal operation, vco in range 1 vco out of range table 11. i 2 c address selection, write mode sfd1 sfd0 address selected binary hex 0 0 1100_1000 0xc8 1 0 1100_1010 0xca 0 1 1100_1100 0xcc 1 1 1100_1110 0xce table 12. i 2 c address selection, read mode sfd1 sfd0 address selected binary hex 0 0 1100_1001 0xc9 1 0 1100_1011 0xcb 0 1 1100_1101 0xcd 1 1 1100_1111 0xcf table 10. i 2 c bit mapping bit descriptions (continued) name description
10 MC44BS373CA data sheet motorola i2c programming i2c programming 10 i 2 c programming the following tables list, by category, the bits used to program various parameters of the MC44BS373CA. 10.1 sound settings table 13 lists the sound settings used. table 14 lists the video settings used. table 13. sound settings bit value setting sound subcarrier frequency (mhz) sfd1 sfd0 sfd1 sfd0 00 4.5 01 5.5 10 6.0 11 6.5 picture-to-sound ratio (db) ps 0 12 116 sound oscillator so 0 sound oscillator on (normal mode) 1 sound oscillation disabled (oscillator and pll section bias turned off) table 14. video settings bit value setting system l/bg selection sysl 0 system b/g enabled, system l disabled (fm sound and negative video modulation) 1 system l enabled, system b/g disabled (am sound and positive video modulation) peak white clip pwc 0 peak white clip on (system b/g) 1 peak white clip off (system l) test pattern signal tpen 0 test pattern signal off (normal operation) 1 test pattern signal on (picture and sound)
motorola MC44BS373CA data sheet 11 i2c programming table 15 lists the uhf settings used. table 16 lists the other settings used. table 17 lists settings of fields x2, x1, and x0, used to set the device into test mode 1 and to control the vhf range. note test modes 1 and 2 are intended for manufacturing test purposes only and cannot be used for normal applications, except for vhf range (states 1.b to 1.e). table 15. uhf settings bit value setting uhf oscillator osc 0 normal operation 1 uhf oscillator disabled (oscillator and pll sections bias turned off) modulator output attenuation att 0 normal operation 1 modulator output attenuation (sound and video modulators sections bias turned off) table 16. other settings bit value setting sound pll sref 0 sound reference frequency = 31.25 khz. 1 sound reference frequency = 62.5 khz. logic output port lop 0 lop pin is low voltage. 1 lop pin is high impedance. standby mode osc so att 1, 1, 1 puts the MC44BS373CA into standby mode. see section 15.3, ?standby mode,? for more information. table 17. write mode?test mode 1 and vhf range x2 x1 x0 state description 0 0 0 1.a normal operation 0 0 1 1.b rf frequency divided for low-frequency testing or vhf range: rf/2 0101.crf/4 0111.drf/8 1001.erf/16
12 MC44BS373CA data sheet motorola i2c programming i2c programming table 18 lists settings of fields x5, x4, and x3, used to set the device into test mode 2. table 19 lists settings of fields y2, y1, and oor, used to set the device into read mode and to determine rf oscillator out-of-frequency range information. 1 0 1 1.f dc drive applied to modulators?non-inverted video at tvout 1 1 0 1.g dc drive applied to modulators?inverted video at tvout 1 1 1 1.h transient output inhibit disabled (that is, speed-up mode) during this speed-up test mode, att = 0 forces sound current source to 1 a, while att = 1 forces it to 10 a. table 18. write mode?test mode 2 x5 x4 x3 state description 0 0 0 2.a normal operation 0 0 1 2.b test pattern generator dc verification (test pattern dc test mode available) 0 1 0 2.c program divider test (uhf program divider on pllfilt pin and sound program divider on spllfil pin) 0 1 1 2.d reference divider test (uhf reference divider on pllfilt pin) 1 0 0 2.e uhf phase comparison, upper source on pllfilt pin sound phase comparison 10- a upper source on spllfil (only valid during transient output inhibit) 1 0 1 2.f uhf phase comparison, lower source on pllfilt pin sound phase comparison 10- a lower source on spllfil (only valid during transient output inhibit) 1 1 0 2.g sound phase comparison 1- a upper source on spllfil (not valid during transient output inhibit) 1 1 1 2.h sound phase comparison 1- a lower source on spllfil (not valid during transient output inhibit) table 19. read mode bit value setting oor 0 normal operation, vco in range 1 vco out of range y1 0 vco out of range, frequency too low. only valid if oor=1 1 vco out of range, frequency too high. only valid if oor=1 y2 0 high vco is active. 1 low vco is active. table 17. write mode?test mode 1 and vhf range (continued) x2 x1 x0 state description
motorola MC44BS373CA data sheet 13 modulator high-frequency characteristics 11 modulator high-f requency characteristics each of the characteristics listed in table 20 is classified as one of the following types: a?100% tested b?100% correlation tested c?characterized on samples d?design parameter see section 14, ?characterization measurement conditions,? for each c-type parameter. unless otherwise stated, v cc = 5.0v, ambient temperature = 25c, and video input is 1 vp-p, with 10-step grey scale and rf output into 75- ? load. note specifications only valid for envelope demodulation. table 20. high-frequency characteristics parameter test conditions min typ max unit type notes tvout output level output signal from modulator section 79 82 85 db vb 1, 2 uhf oscillator frequency ? 460 ? 880 mhz a vhf range from uhf oscillator internally divided 45 ? 460 mhz b tvout output attenuation during transient output inhibit, or when att bit is set to 1 65 75 ? dbc b 1, 2 sound subcarrier harmonics (fp + n fs) reference picture carrier 50 63 ? dbc c 1 second harmonic of chroma subcarrier using red ebu bar 45 70 ? dbc c 1 chroma/sound intermodulation: fp + (fsnd ? fchr) using red ebu bar 65 82 ? dbc c 1 fo (picture carrier) harmonics 2nd harmonic: ch21 ? 38 50 db vc 1,3 3rd harmonic: ch21 ? 58 70 other channels ? 2 out-of-band (picture carrier) spurious 1/2 fo ? 1/4 fo ? 3/2 fo ? 3/4 fo from 40 mhz to 1 ghz. ?? 10db vc 1 in-band spurious (fo at 5 mhz) no video sound modulation. 65 75 ? dbc c 1 notes: 1. see section 14, ?characterization measurement conditions.? 2. see figure 3. 3. picture carrier harmonics are highly dependent on pcb layout and decoupling capacitors.
14 MC44BS373CA data sheet motorola video characteristics video characteristics figure 3. typical high-frequency performance 12 video characteristics each of the characteristics listed in table 21 is classified as one of the following types: a?100% tested b?100% correlation tested c?characterized on samples d?design parameter see section 14, ?characterization measurement conditions,? for each c-type parameter. unless otherwise stated, v cc = 5.0v, ambient temperature = 25c, and video input is 1 vp-p, with 10-step grey scale and rf output into 75- ? load. note specifications are only valid for envelope demodulation. table 21. video performance characteristics parameter test conditions minimum typical maximum unit type notes video bandwidth reference 0 db at 100 khz, measured at 5 mhz. ?1.5 ?0.8 ? db c 1 video input level 75- ? load ? ? 1 . 5v cvbs d video input current ? 0.2 1 aa tv output level 77 79 81 83 85 87 471 521 571 621 671 721 771 821 871 frequency (mhz) dbuv tv output attenuation 55 60 65 70 75 80 85 471 521 571 621 671 721 771 821 87 1 frequency (mhz) dbc 3fo harmonics 35 40 45 50 55 60 65 70 75 471 521 571 621 671 721 771 821 871 frequency (mhz) dbuv 2fo harmonics 35 40 45 50 55 60 65 70 75 471 521 571 621 671 721 771 821 871 frequency (mhz) dbuv maximum specification minimum specification maximum specification maximum specification minimum specification typical typical typical typical
motorola MC44BS373CA data sheet 15 video characteristics notes: 1. see section 14, ?characterization measurement conditions.? 2. see figure 4. figure 4. typical video performance video input impedance 500 ? ? k ? a peak white clip video modulation depth for video = 1.4 v cvbs 90.5 94 97.5 % b video s/n no sound modulation,100% white video using ccir rec.567 weighting filter 53 56 ? db c 1, 2 unweighted 48 53 ? c 1 differential phase ccir test line 330, worst case from first 4 steps out of 5 ?5 ? 5 deg c 1 differential gain ccir test line 330, worst case from first 4 steps out of 5 ?5 ? 5 % c 1 luma/sync ratio input ratio 7 . 0:3 . 0 6.8/3.2 7.0/3.0 7.2/2.8 ? b pal video modulation depth (sysl = 0) 76 82 88 % b 1, 2 secam video modulation depth (sysl = 1) 87 93 99 % b 1, 2 table 21. video performance characteristics (continued) parameter test conditions minimum typical maximum unit type notes video signal to noise (w ith ccir weighting filter) 48 50 52 54 56 58 60 62 4 71 52 1 571 6 2 1 6 71 72 1 771 8 2 1 8 71 frequency (mhz) db pal video modulation depth 74 76 78 80 82 84 86 88 90 4 71 52 1 571 6 2 1 6 71 72 1 771 8 2 1 8 71 frequency (mhz) % secam video modulation depth 84 86 88 90 92 94 96 98 10 0 10 2 4 71 52 1 571 6 2 1 6 71 72 1 771 8 2 1 8 71 frequency (mhz) % typical typical maximum specification maximum specification minimum specification minimum specification minimum specification typical
16 MC44BS373CA data sheet motorola audio characteristics audio characteristics 13 audio characteristics each of the characteristics listed in table 22 is classified as one of the following types: a?100% tested b?100% correlation tested c?characterized on samples d?design parameter see section 14, ?characterization measurement conditions,? for each c-type parameter. unless otherwise stated, v cc = 5.0v, ambient temperature = 25c, and video input is 1 vp-p, with 10-step grey scale and rf output into 75- ? load. note specifications are only valid for envelope demodulation. table 22. audio performance characteristics 1 1 see section 14, ?characterization measurement conditions.? parameter test conditions minimum typical maximum unit type picture-to-sound ratio ps bit set to 1 13 16 19 db b ps bit set to 0 9 12 15 audio modulation depth using specific pre-emphasis circuit, audio input level = 205 mvrms, audio frequency = 1 khz am modulation: secam fs=6.5mhz 76 80 84 % b fm modulation: fs=5.5, 6, or 6.5 mhz 100% modulation = 50 khz fm deviation 76 80 84 % b fm modulation: ntsc fs=4.5mhz 100% modulation = 25 khz fm deviation 76 80 84 % b audio input resistance 45 53 61 k ? a audio frequency response reference 0db at 1khz using specified pre-emphasis circuit, measured from 50 hz to 15 khz (depends on loop filter components) ?2.0 ? +2.0 db c audio distortion fm (thd only) at 1 khz, 100% modulation ( 50 khz) no video ?0.20.8%c audio distortion am (thd only) at 1 khz, 100% modulation no video ?1.52.5%d audio s/n with sync buzz fm ref 1 khz, 50% modulation (25 khz) ebu color bars video signal, using ccir 468-2 weighting filter 50 54 ? db c audio s/n with sync buzz am reference 1khz, 85% modulation video input ebu color bar 75% audio bw 40hz?15khz, using ccir 468-2 weighting filter 45 50 ? db d
motorola MC44BS373CA data sheet 17 characterization measurement conditions figure 5. typical audio performance 14 characterization measurement conditions table 23 shows the MC44BS373CA default configuration unless otherwise specified. rf inputs/output into 75- ? load using a 75- to 50- ? transformation. video input 1 vp-p. audio pre-emphasis circuit enabled. table 23. device default configuration device feature default setting peak white clip enabled uhf oscillator on sound and video modulators on sound subcarrier frequency 5.5 mhz sound oscillator on sound pll reference frequency 31.25 khz logic output port low picture-to-sound carrier ratio 12 db system l disabled test pattern disabled all test mode bits zero frequency from channel 21 to 69 table 24. measurement conditions device and signal set-up measurement set-up tvout output level video: 10-step grey scale no audio measured picture carrier in db v with the hp8596e spectrum analyzer using a 75- to 50- ? transformation, all cable losses and transformation pads having been calibrated. measurement used as a reference for other tests: tvout_ref fm audio weighted signal to noise 46 48 50 52 54 56 58 4 71 52 1 571 6 2 1 6 71 72 1 771 8 2 1 8 71 frequency (mhz) db typical minimum specification
18 MC44BS373CA data sheet motorola characterization measurement conditions characterization measurement conditions tvout output attenuation att bit = 1 no video signal no audio signal measure in dbc picture carrier at att = 1 with reference to picture carrier at att = 0 sound subcarrier harmonics video: 10-step grey scale no audio signal measure in dbc second and third sound harmonics levels in reference to picture carrier (tvout_ref). second harmonics of chroma subcarrier no audio video: a 700-mvp-p, 100-khz sinusoidal signal is inserted on the black level of active video area. measure in dbc, in reference to picture carrier (tvout_ref), second harmonic of chroma at channel frequency plus two times chroma frequency, resulting in the following spectrum. chroma/sound intermodulation no audio signal video: a 700-mvp-p, 100-khz sinusoidal signal is inserted on the black level of active video area.this is generated using a rohde & schwarz video generator saf and inserting the required frequency from an rf signal generator. measure in dbc, in reference to picture carrier (tvout_ref), intermodulation product at channel frequency plus the sound carrier frequency (+5.5 mhz) minus the chroma frequency (?4.43 mhz), resulting in the following spectrum (intermodulation product is at the channel frequency +1.07 mhz): table 24. measurement conditions (continued) device and signal set-up measurement set-up picture carrier sound carrier sound 2nd +5.5mhz fo +11mhz +16.5mhz harmonic sound 3rd harmon ic 700mv pk-pk f requency 1 00khz frequency 100 khz 700 mvp-p picture carrier sound chroma 2nd +8.86 mhz fo +4.43 mhz +5.5 mhz harmonic carrier chroma carrier 700mv pk-pk f requency 1 00khz frequency 4.43 mhz 700 mvp-p picture carrier chroma/sound +1.07mhz fo intermodulation sound +4.43 mhz +5.5 mhz carrier chroma carrier
motorola MC44BS373CA data sheet 19 characterization measurement conditions picture carrier harmonics no video signal no audio signal measure in dbc, in reference to picture carrier (tvout_ref), second and third harmonic of channel frequency, resulting in the following spectrum . out-of-band spurious no video signal no audio signal measure in db v spurious levels at 0.25, 0.5, 0.75 and 1.5 times channel frequency, resulting in the following spectrum (measure from 40 mhz to 1ghz ): in-band spurious no video signal no audio signal measure in dbc, in reference to picture carrier (tvout_ref), spurious levels falling into video bandwidth starting from 100 khz from the picture carrier up to 5mhz. video bandwidth no audio video: 600-mvp-p sinusoidal signal inserted on the black level of active video area the video signal is demodulated on the spectrum analyzer, and the peak level of the 100-khz signal is measured as a reference. the frequency is then swept from 100 khz to 5 mhz, and then the difference in db from the 100-khz reference level is measured. weighted video signal to noise video: 100% white video signal, 1 vp-p. no audio signal this is measured using a rohde & schwarz amfs uhf demodulator in b/g (using a ccir rec. 567 weighting network), 100-khz to 5-mhz band with sound trap and envelope detection, and a rohde & schwarz uaf video analyzer. the video analyzer measures the ratio between the amplitude of the active area of the video signal (700 mv) and the noise level in vrms on a video black level which is shown below. video s/n is calculated as 20 x log(700/n) in db. table 24. measurement conditions (continued) device and signal set-up measurement set-up picture carrier 3rd harmonic 3fo fo 2fo 2nd harmonic picture carrier fo 3/2 fo/2 fo/4 fo 3/4 fo spurious n noise level in vrms
20 MC44BS373CA data sheet motorola characterization measurement conditions characterization measurement conditions unweighted video signal to noise same as above with ccir filter disabled same as above video differential phase video: 5-step grey scale, 1 vp-p no audio signal this is measured using a rohde & schwarz amfs uhf demodulator in b/g (using a ccir rec. 567 weighting network), 100-khz to 5-mhz band with sound trap and envelope detection, and a rohde & schwarz uaf video analyzer. on line ccir 330, the video analyzer dp measure consists of calculating the difference of the chroma phase at the black level and the different chroma subcarrier phase angles at each step of the grey scale. the largest positive or negative difference indicates the distortion. the video analyzer method takes the worst step from the first 4 steps. video differential gain video: 5-step grey scale, 1 vp-p no audio signal this is measured using a rohde & schwarz amfs uhf demodulator in b/g (using a ccir rec. 567 weighting network), 100-khz to 5-mhz band with sound trap and envelope detection, and a rohde & schwarz uaf video analyzer. on line ccir 330 shown below, the video analyzer dg measure consists of calculating the difference of the chroma amplitude at the black level and the different amplitudes at each step of the grey scale. the largest positive or negative difference indicates the distortion. the video analyzer method takes the worst step from the first 4 steps. video modulation depth no audio signal video: 10-step grey scale this is measured using an hp8596e spectrum analyzer with a tv trigger option, allowing demodulation and triggering on any specified tv line. the analyzer is centred on the maximum peak of the video signal and reduced to 0 hz span in linear mode to demodulate the video carrier . the modulation depth is calculated as (a ? b) / a x 100 in percent. same measurement method for l standard, with inverted video. table 24. measurement conditions (continued) device and signal set-up measurement set-up diff phase = 100% phase at position 0 largest positive or negative difference 0 1 2 3 4 5 5-step grey scale with chroma subcarrier superimpose d (not to scale), line ccir 330 diff gain = 100% amplitude at position zero largest positive or negative difference a ( 6-10mv) b (0.6 - 3mv) t v line demodulated by spectrum analyzer?bg standar d a(mv) b(mv)
motorola MC44BS373CA data sheet 21 characterization measurement conditions picture-to-sound ratio no video signal no audio signal ps bit set to 0 and 1 measure in dbc sound carrier in reference to picture carrier (tvout_ref) for ps bit = 0 (ps = 12 db typical) and for ps bit = 1 (ps = 16 db), audio modulation depth?fm modulation video black level audio signal: 1 khz, 205 mvrms. this is measured using a rohde & schwarz amfs demodulator in b/g and an hp8903a audio analyzer at 1 khz. the audio signal, 205 mv at 1 khz, is supplied by the audio analyzer, and the fm demodulated signal deviation is indicated on the demodulator in khz peak. this value is then converted into percentage of fm deviation, based on specified standards. audio frequency response video black level audio signal: 50 hz to 15 khz, 100 mvrms this is measured using a rohde & schwarz amfs demodulator in b/g and an hp8903a audio analyzer. the audio signal, 1 khz 100 mvrms, is supplied by the audio analyzer, and demodulated by the demodulator. the audio analyzer measures the ac amplitude of this demodulated audio signal. this value is taken as a reference (0 db). the audio signal is then swept from 50 hz to 15 khz and demodulated. ac amplitude is measured in db relative to the 1-khz reference. audio pre-emphasis and de-emphasis circuits are engaged and all audio analyzer filters are switched off. audio distortion fm audio: 1 khz, adjustable level video black level this is measured using a rohde & schwarz amfs uhf demodulator in b/g and an hp8903a audio analyzer at 1 khz. the output level of the audio analyzer is varied to obtain a deviation of 50 khz indicated on the demodulator. the input arms detector of the audio analyzer converts the ac level of the combined signal + noise + distortion to dc. it then removes the fundamental signal (1 khz) after having measured the frequency. the output rms detector converts the residual noise + distortion to dc. the dc voltmeter measures both dc signals and calculates the ratio of the two signals as a percentage. audio signal to noise audio: 1 khz, adjustable level video: ebu color bars this is measured using a rohde & schwarz amfs demodulator in b/g and an hp8903a audio analyzer at 1 khz. the output level of the audio analyzer is varied to obtain a modulation deviation of 25 khz indicated on the amfs demodulator. the audio analyzer alternately turns on and off its internal audio source to make a measure of the audio signal plus noise and then another measure of only the noise. the measurement is made using the internal ccir 468-2 filter of the audio analyzer together with the internal 302-khz (60 db/decade) low-pass filters. the amfs demodulator uses a quasi-parallel demodulation as is the case in a normal tv set. in this mode the nyquist filter is bypassed and the video carrier is used without added delay to effectuate intercarrier conversion. in this mode the phase noise information fully cancels out and the true s/n can be measured. table 24. measurement conditions (continued) device and signal set-up measurement set-up picture carrier sound carrier +5.5 mhz fo adist distortion noise + () distortion noise signa l ++ () ? = asn db () 20 signal noise + () log noise () ? =
22 MC44BS373CA data sheet motorola MC44BS373CA modes of operation MC44BS373CA modes of operation 15 MC44BS373CA modes of operation 15.1 power-on settings at power on, the MC44BS373CA is configured as shown in table 25 below. 15.2 power supply the three device v cc pins (pins 10, 13 and 15 for so16 package, pins 10, 15 and 17 for qfn20 package) must be applied at the same time to ensure all internal blocks are correctly biased. do not bias any other pin before v cc is applied to the MC44BS373CA. when all v cc s are switched to 0 v, the sda and scl pins are high impedance. 15.3 standby mode during standby mode, the modulator is switched to low power consumption. that is, the sound oscillator, uhf oscillator, and the video and sound modulator sections? bias are internally turned off. the i 2 c bus section remains active. the MC44BS373CA can be set to standby mode with a combination of 3 bits: osc = 1, so = 1, and att = 1. 15.4 system l or b / g selection the sysl pin can be used to switch the device between system l and system b/g, as summarized in table 26. table 25. power-on settings write mode bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0 ack c1-high order bits 10000000ack c0-low order bits 00001000ack fm-high order bits 0 0 n11 n10 n9 n8 n7 n6 ack fl-low order bits n5 n4 n3 n2 n1 n0 0 0 ack note: n0 to n11 are set to have uhf oscillator on channel e36 (591.25 mhz). (see section 15.7, ?uhf pll section,? for more information.) peak white clip is on. sound frequency is 5.5 mhz. sound reference frequency is 31.25 khz. logic output port is low voltage. picture-to-sound ratio is 12 db. table 26. system l or b/g selection function b/g (sysl = 0) l (sysl = 1) video modulation polarity negative positive video modulation depth (% typical) 1 1 see section 12, ?video characteristics.? 82 93 sound modulation fm am
motorola MC44BS373CA data sheet 23 MC44BS373CA modes of operation 15.5 transient output inhibit to minimize the risk of interference to other channels while the uhf pll is acquiring a lock on the desired frequency, the sound and video modulators are turned off during a timeout period for the following cases: power-on from zero (that is, all v cc switched from 0 to 5 v) uhf oscillator power-on from off state (that is, osc bit switched from 1 to 0) there is a timeout of 263 ms until the output is enabled. this lets the uhf pll settle to its programmed frequency. during the 263-ms timeout, the sound pll current source is set to 10 a typical to speed up the locking time. after the timeout, the current source is switched to 1 a. use care when selecting loop filter components to ensure the loop transient does not exceed this delay. for test purposes, it is possible to disable the 263-ms delay using test mode1, state1.h. (this is called speed-up mode.) table 17 provides settings pertaining to test mode 1. 15.6 uhf oscillator?vhf range the uhf oscillator is fully integrated and does not require any external components. for low-frequency testing or vhf range operation (test mode 1, states 1.b to 1.e) the uhf oscillator can be internally divided by 2, 4, 8, or 16. 15.7 uhf pll section the reference divider is a fixed divide-by-128, resulting in a reference frequency of 31 . 25 khz with a 4 . 0-mhz crystal. the prescaler is a fixed divide-by-8 and is permanently engaged. the programmable divider division ratio is controlled by the state of control bits n0 to n11. the divider ratio n for a desired frequency f (in mhz) is given by: with: note programming a division ratio of n = 0 is not allowed. 15.8 logic output port (lop) the lop pin controls any logic function. the primary applications for lop are to control an external attenuator or an external switch between the antenna input and tv output. a typical attenuator application with pin diode is shown in figure 6. the lop pin switches the pin attenuator depending on the signal strength of the antenna input. this reduces the risk of intermodulation in certain areas. the lop can also be used as an off position bypass switch or for other logic functions in the application. n f 8 --- 128 4 --------- - = n 2048 n11 1024 n10 4 n2 4 n1 n0 +++++ =
24 MC44BS373CA data sheet motorola MC44BS373CA modes of operation MC44BS373CA modes of operation figure 6. typical attenuator application with pin diode 15.9 video section?peak white clip the MC44BS373CA requires the following for proper video functionality: a composite video input with negative going sync pulses a nominal level of 1 vp-p this signal is ac-coupled to the video input where the sync tip level is clamped. the video signal is then passed to a peak white clip (pwc) circuit. the pwc circuit function soft-clips the top of the video waveform, if the sync tip amplitude to peak white clip goes too high. this avoids carrier over-modulation by the video. clipping can be disabled by software. 15.10 test pattern generator the i 2 c generates a simple test pattern, which can be switched under bus control to permit a tv receiver to easily tune to the modulator output. the pattern consists of two white vertical bars on a black background and a 976-hz audio test signal. figure 7. test pattern generator lop pin vcc tv out antenna input 10 20 30 40 50 60 0 64 te1 24 28 44 time in s. 7/10 3/10 te2
motorola MC44BS373CA data sheet 25 MC44BS373CA modes of operation 15.11 sound section the oscillator is fully integrated and does not require any external components. an internal low-pass filter and matched structure provide very low harmonics levels. the sound modulator system consists of an fm modulator incorporating the sound subcarrier oscillator. the audio input signal is ac-coupled into the amplifier, which then drives the modulator. for mono applications, the audio pre-emphasis circuit is a high-pass filter with an external capacitor and an internal resistor (106 k ? typical). the recommended capacitor value for bg standard (with a time constant of 50 s) is 470 pf. the recommended capacitor value for m/n standard (with a time constant of 75 s) is 750 pf. the sound reference divider is a programmable divide-by-128 or divide-by-64, resulting in a reference frequency of 31 . 25 khz or 62.5 khz with a 4 . 0-mhz crystal. this reference frequency can be selected by bus (bit sref), depending on the application. for instance, when the audio bandwidth is required to be extended (for stereo application), it is possible to select the higher value (62.5 khz) to avoid any interference between the reference and the audio signals. for stereo applications, the audio signal is already encoded in the baseband stereo encoder. it is not necessary to use a pre-emphasis, and in this case the pre-emphasis capacitor must be removed. sometimes for the same application it is useful to increase the fm deviation. to increase fm deviation, replace the original pre-emphasis capacitor with a fixed 100-nf capacitor. adding this value boosts the deviation and does not create a pre-emphasis. without pre-emphasis, the audio bandwidth extends to 60 khz. to increase the audio bandwidth at low frequencies it is recommended to change the sound pll loop filter. it is also recommended to increase the values of the loop filter capacitors. the recommended values are 1 f and 100 nf. it is possible to create a peak for the low frequencies (from 30 to 80 hz) by adjusting the resistor of the sound loop filter. a flat response is given with a value of 5.6 k ? but this value can be set to 4.7 k ? . this gives a peak of about 1 db at 40 hz and extends the low-frequency cut-off to 28 hz. the following figure plots the resulting bandwidth for low frequencies and for the whole bandwidth (up to 60 khz). the first chart represents the audio bandwidth for low frequencies (20 to 150 hz) for two sets of sound loop filters. the first set with 1 f + 100 nf + 5.6 k ? gives a flat response. the second set with 1 f + 100 nf + 4.7 k ? gives a peak of about 1 db at 60 hz. it is possible to adjust this peak by changing the resistor value.
26 MC44BS373CA data sheet motorola MC44BS373CA modes of operation MC44BS373CA modes of operation figure 8. audio bandwidth measurements (20 hz to 150 hz) versus loop filter components figure 9. audio bandwidth measurements (0 to 60 khz) without pre-emphasis -12 -10 -8 -6 -4 -2 0 2 20 40 60 80 100 120 140 hz db snd filter: 1f_100nf_4k7 snd filter: 1f_100nf_5k6 -12 -10 -8 -6 -4 -2 0 2 0 10000 20000 30000 40000 50000 60000 hz db
motorola MC44BS373CA data sheet 27 high speed i2c compatible bus figure 10. pll loop filter loop filter equation: o = 3-db cutoff frequency kpd = 1- a phase detector current kosc = 5 mhz/v sound oscillator slope. (in fact, kosc = 40 mhz/prescaler divider = 8.) this provides 5 mhz/v. n = sound divider ratio q = quality factorvr c2, added to minimize glitches, is usually set to one tenth the size of c1. for example: fref = 31.25 khz n = 5.5 mhz / 31.25 khz = 176 assuming c 1 = 1 f, then o = 168 rad, and fo = 27 hz q depends on the desired frequency response. choosing q = 0.7 as a starting point, then r = 8.5 k ?. the resistance acts directly on the factor quality and can be adjusted to create a peak on the low-frequency range. it is recommended that the value of r be adjusted experimentally depending on the application and requirements. 16 high speed i 2 c compatible bus 16.1 specification conditions each of the characteristics listed in table 27 and table 28 is classified as one of the following types: a?100% tested b?100% correlation tested c?characterized on samples d?design parameter see section 14, ?characterization measurement conditions,? for each c-type parameter. unless otherwise specified, v cc = 5.0 v, ta = 25 c. c2 c1 r o kpd kosc nc 1 ----------------------------- - = q 1 rc 1 o ------------------------------ - = wit h ,,
28 MC44BS373CA data sheet motorola high speed i2c compatible bus high speed i2c compatible bus 16.2 timing definitions figure 11. ssda/sscl timing table 27. electrical characteristics electrical characteristics symbol minimum typical maximum unit type sda/scl output current at 0v ?5 ?2 ? aa sda/scl low input level v il ??1.5vb sda/scl high input level v ih 2.1 ? ? v b sda/scl input current for input level from 0.4 v to 0.3 v cc ?5 ? 5 ac sda/scl input level 0 ? v cc +0.3 v d sda/scl capacitance ? ? 10 pf c ack low output level (3 ma sinking current) ? ? 0.3 v c ack low output level (9 ma sinking current) ? ? 0.8 v c table 28. timing characteristics timing characteristics symbol minimum typical maximum unit type bus clock frequency 0 ? 800 khz c bus free time between stop and start t buf 200 ? ? ns c setup time for start condition t su;sta 500 ? ? ns c hold time for start condition t hd;sta 500 ? ? ns c data setup time t su;dat 0??nsc data hold time t hd;dat 0??nsc setup time for stop condition t su;sto 500 ? ? ns c hold time for stop condition t hd;sto 500 ? ? ns c acknowledge propagation delay t ack;low ??300nsc sda fall time at 3 ma sink i and 130-pf load ? ? 50 ns c sda fall time at 3 ma sink i and 400-pf load ? ? 80 ns c sda rise time scl fall/rise time ? ? ? ? 300 300 ns ns c c pulse width of spikes suppressed by the input filter ? ? 50 ns c t buf ssda ... ... ack t hd;dat t su;dat t su;sto t hd;sta t ack;low start stop sscl scl sda t su;sta chip address scl sda t hd;sto start stop
motorola MC44BS373CA data sheet 29 high speed i2c compatible bus 16.3 level definitions sda/scl high and low levels are designed to be compatible with 0?5 v and 0?3.3 v sda/scl signals. figure 12. sda/scl levels 16.4 high-speed i 2 c-compatible bus format figure 13. i 2 c bus timing 16.5 i 2 c write-mode format and bus receiver note the information in this section concerning i 2 c address selection applies to the 20-pin package only. the i 2 c address in the 16-pin packages is set at 0xca and cannot be changed. it is possible to select one specific i 2 c address from among four available addresses. this selection is controlled by an external pin (cas) where an external resistor is connected to ground. by changing the value of this resistor it is possible to change the dc level on the multi-level cas pin. this dc level is compared against internal thresholds (1.65, 0.42 and 2.82 v) and, depending on the result, one of the available addresses is selected according to table 29. when chip addresses cc or c8 are selected, the dc level at the cas pin is set by a ratio of an external resistor (33 k ? or 180 k ? 10%) and the internal pull-up resistor (85 k ? typical with a tolerance of 40% worst case). table 29. chip address selected versus cas pin level external resistor on pin cas i 2 c address open 0xca 180-k ? pull-down 0xc8 33-k ? pull-down 0xcc 0 (connected to ground) 0xce sda 0v vcc vih vil dead band 1 2 3 4 5 6 7 8 9 10 14 11 12 13 45 44 15 19 16 17 18 sta chip address (0xca) ack ack first data byte (c1 or fm) data ack stop scl sda
30 MC44BS373CA data sheet motorola high speed i2c compatible bus high speed i2c compatible bus the bus receiver operates the i 2 c-compatible data format. the chip address (i 2 c bus) is shown in table 30. in write mode, each ninth data bit (bits 9, 18, 27, 36, and 45) is an acknowledge bit (ack) during which the mcu sends a logic 1 and the modulator circuit answers on the data line by pulling it low. besides the chip address, the circuit needs 2 or 4 data bytes for operation. the sequences of data bytes shown in table 31 are the permitted incoming information. after the chip address (ca), 2 or 4 data bytes may be received. if 3 data bytes are received, the third one is ignored. if 5 or more data bytes are received, the fifth and following ones are ignored, and the last ack pulse is sent at the end of the fourth data byte. the first and third data bytes contain a function bit, which lets the ic distinguish between frequency information and control information. if the function bit is a logic 1, the two following bytes contain control information. the first data byte after the chip address may be byte co or byte fm. the 2 bytes of frequency information are preceded by a logic 0. 16.6 i 2 c read mode format the chip address (i 2 c bus) is shown in table 32. the incoming information consists of the read-mode chip address byte. the device then answers with an ack followed by 1 byte containing 3 bits of status information. no acknowledge is answered by the modulator after this byte. table 30. chip address (i 2 c write mode) 11001000 (ack)=0xc8 in write mode 11001010 (ack)=0xca in write mode 11001100 (ack)=0xcc in write mode 1 1 0 0 1 1 1 0 (ack) = 0xce in write mode table 31. permitted data bytes (incoming information) example 1 sta ca c1 c0 sto example 2 sta ca fm fl sto example 3 sta ca c1 c0 fm fl sto example 4 sta ca fm fl c1 c0 sto notes: sta = start condition fm = frequency information, high order bits c1 = control information, high order bits sto = stop condition ca = chip address fl = frequency information, low order bits co = control information, low order bits table 32. chip address (i 2 c read mode) 11001001 (ack)=0xc9(hex) in read mode 11001011 (ack)=0xcb(hex) in read mode 1 1 0 0 1 1 0 1 (ack) = 0xcd (hex) in read mode 1 1 0 0 1 1 1 1 (ack) = 0xcf (hex) in read mode
motorola MC44BS373CA data sheet 31 pin circuit schematics 17 pin circuit schematics figure 14. pin circuit schematics vccd 50 1/2 vccd vccd 25k 1/2 vccd 5k sda scl xtal spllflt ack 11.8k audio 10k prem 50k audio video 500 tvout vcc 1.5k vcc 25k vcc vcc vcc vcc vcc tvovcc 75 vcc vcc 5k vcc 10k 10k lop vcc pllflt vcc 2k vcc 100 85k cas vccd vccd auxin 600 vcc 20k
32 MC44BS373CA data sheet motorola application diagrams application diagrams 18 application diagrams 18.1 bicmos modulator so16nb mono application figure 15. proposed so16 package (mono application schematic) notes: 1. cx value depends on crystal characteristics. cx = 27 pf on motorola application board. 2. rf pll loop filter components at pin 14 must be as close as possible to vccd at pin 15. 3. supply voltage decoupling capacitors must be as close as possible to ground. tvout o 2.2k 22 nf 1nf 10 nf 47nf vcc o 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 scl sda 4 mhz vcc pre-em o o o gndd vccd pllflt gnd video tvovcc spllflt sda scl lop tvout vcca audio o video lop o 10nf 100nf 220nf 100nf cx 22nf 470pf 75 xtal gnd preem audio 10nf o note 1 15k note 2 note 3 note 3
motorola MC44BS373CA data sheet 33 application diagrams 18.2 bicmos modulator so16nb stereo application figure 16. proposed so16 package (stereo application schematic) notes: 4. cx value depends on crystal characteristics; cx = 27 pf on motorola application board. 5. rf pll loop filter components at pin 14 must be as close as possible to fcc at pin 15. 6. supply voltage decoupling capacitors must be as close as possible to ground. 7. for a stereo application, the audio signal is already encoded in the baseband stereo encoder. it is not necessary to create a pre-emphasis and in this case the pre-emphasis capacitor has to be removed. sometimes for the same application it is useful to increase the fm deviation. to increase fm deviation, replace the original pre-emphasis capacitor with a 100-nf capacitor. adding this kind of value boosts the deviation and does not create a pre-emphasis. 8. it is possible to create a peak for the low frequencies (from 30 to 80 hz) by adjusting the resistor of the sound loop filter. a flat response is given with a value of 5.6 k ? but this value can be set to 4.7 k ? . this gives a peak of about 1 db at 40 hz and extends the low-frequency cut-off at 28 hz. the value of the audio input series capacitor has been increased in order to have a lower cut-off frequency. 9. the value of the audio input series capacitor has been increased in order to have a lower cutoff frequency. tvout o 2.2k 22nf 1nf 10nf 47nf vcc o 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 scl sda 4mhz vcc pre-em o o o gndd vccd pllflt gnd video tvovcc spllflt sda scl lop tvout vcca audio o video lop o 10nf 100nf 1 uf 220nf cx 100nf note 7 75 xtal gnd preem audio 10nf o note 4 3k9 to 6k2 note 5 note 8 note 9 note 6 note 6
34 MC44BS373CA data sheet motorola application diagrams application diagrams 18.3 bicmos modulator qfn20 mono application figure 17. proposed qfn20 package (mono application schematic) notes: 10. cx value depends on crystal characteristics; cx = 27 pf on motorola application board 11. rf pll loop filter components at pin 16 must be as close as possible to fcc at pin 17. 12. supply voltage decoupling capacitors must be as close as possible to ground. 13. chip address select pin open (default i 2 c address = 0xca). tvout o 2.2k 22nf 1nf 10nf 47nf vcc 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 scl sda 4mhz vcc pre-em o o o gndd vccd pllflt gnd video tvovcc spllflt sda scl lop tvout vcca audio o video lop o 10nf 1uf 220nf 100nf cx 22nf 470pf 75 xtal gnd preem audio 10nf o note 10 15k note 11 note 12 note 12 17 18 19 20 cas auxin nc nc note 13 o
motorola MC44BS373CA data sheet 35 application diagrams 18.4 bicmos modulator qfn20 stereo application figure 18. proposed qfn20 package (stereo application schematic) notes: 14. cx value depends on crystal characteristics; cx = 27 pf on motorola application board. 15. rf pll loop filter components at pin 16 must be as close as possible to fcc at pin 17. 16. supply voltage decoupling capacitors must be as close as possible to ground. 17. for a stereo application, the audio signal is already encoded in the baseband stereo encoder. it is not necessary to create a pre-emphasis and in this case the pre-emphasis capacitor has to be removed. sometimes for the same application it is useful to increase the fm deviation by replacing the original pre-emphasis capacitor with a 100-nf capacitor. adding this value boosts the deviation and does not create a pre-emphasis. 18. it is possible to create a peak for the low frequencies (from 30 to 80 hz) by adjusting the sound loop filter resistor. a flat response is given with a value of 5.6 k ? but this value can be set to 4.7 k ? . this gives a peak of about 1 db at 40 hz and extends the low-frequency cut-off at 28 hz (see audio section). 19. chip address select pin open (default i 2 c address = 0xca) the value of the audio input series capacitor has been increased in order to have a lower cut-off frequency. tvout o 2.2k 22nf 1nf 10nf 47nf vcc o 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 scl sda 4mhz vcc pre-em o o o gndd vccd pllflt gnd video tvovcc spllflt sda scl lop tvout vcca audio o video lop o 10nf 1 uf 1uf 220nf cx 100nf 470pf 75 xtal gnd preem audio 10nf o note 14 3k9 to 6k2 note 15 note 16 note 16 17 18 19 20 cas auxin nc nc note 19 note 18 note 17
36 MC44BS373CA data sheet motorola MC44BS373CA evaluation board schematic and layout MC44BS373CA evaluation board schematic and layout 19 MC44BS373CA evaluation board schematic and layout 19.1 so16nb board pcb layout figure 19. evaluation board pcb layout (so16nb package)
motorola MC44BS373CA data sheet 37 MC44BS373CA evaluation board schematic and layout 19.2 so16nb board schematic figure 20. evaluation board schematic (so16nb package)
38 MC44BS373CA data sheet motorola MC44BS373CA evaluation board schematic and layout MC44BS373CA evaluation board schematic and layout 19.3 qfn20 board pcb layout figure 21. evaluation board pcb layout (qfn20 package) top layer
motorola MC44BS373CA data sheet 39 MC44BS373CA evaluation board schematic and layout figure 22. evaluation board pcb layout (qfn20 package) bottom layer
40 MC44BS373CA data sheet motorola MC44BS373CA evaluation board schematic and layout MC44BS373CA evaluation board schematic and layout 19.4 qfn20 board schematic figure 23. evaluation board schematic (qfn20 package)
motorola MC44BS373CA data sheet 41 packaging instructions 20 packaging instructions tape and reel packaging is per 12mrh00360a issue y with the following conditions applicable for dual in-line sop (soic) package and quad flat pack no lead square (qfn). figure 24. dual in-line sop (soic) component orientation: arrange parts with the pin-1 side closest to the tape?s round sprocket holes on the tape?s trailing edge. figure 25. quad flat pack no lead square moisture sensitivity levels are as follows: MC44BS373CAd,r2?moisture sensitivity level 1, no dry pack required MC44BS373CAfc,r2 lead free packages?moisture sensitivity level 3, dry pack required MC44BS373CAef,r2 lead free packages?moisture sensitivity level 3, dry pack required
42 MC44BS373CA data sheet motorola marking instructions marking instructions 21 marking instructions 21.1 so16 nb marking 21.2 so16 nb lead free marking 21.3 qfn20 marking compliant with 12mrh00191a specification for package code 126. bar marked part way across pin 1 end of package. bar width 10 to 20 mils, length to be at least four times bar width. bar placement may extend across chamfer and dimple areas. pin 1 dot or dimple 1st line: m44bs373ca (part number coded on 10 digits) 2nd line: assembly site code aw (2 digits) followed by the wafer lot code l (1 digit), year y (1 digit) and work week ww (2 digits) mcbs373ca aw ly w w bar marked part way across pin 1 end of package. bar width 10 to 20 mils, length to be at least four times bar width. bar placement may extend across chamfer and dimple areas. pin 1 dot or dimple 1st line: m44bs373ca (part number coded on 10 digits) 2nd line: assembly site code aw (2 digits) followed by the wafer lot code l (1 digit), year y (1 digit) and work week ww (2 digits) mbs373caef aw ly w w 1st line: m73ca (part number coded on 4 digits) 2nd line: alyw (assembly site code a (1 digit) wafer lot code l (1 digit), year y (1 digit) and work week w (1 digit) m73ca (m)
motorola MC44BS373CA data sheet 43 case outlines 22 case outlines 22.1 so16 case figure 26. so16nb package dim millimeters inches min max min max a 1.35 1.75 0.054 0.068 a1 0.1 0.25 0.004 0.009 d 9.8 10 0.385 0.393 e 5.8 6.2 0.229 0.244 e1 3.8 4 0.150 0.157 b 0.35 0.49 0.014 0.019 c 0.19 0.25 0.008 0.009 e 1.27 bsc 0.050 bsc l 0.4 1.25 0.016 0.049 h 0.25 0.5 0.010 0.019 q0 o 7 o 0 o 7 o note: 1. dimensions and tolerances per asme y14.5m , 1994. note: 2. controlling dimension: millimeters. note: 3. dimensions d and e1 do not include mold protrusion. note: 4. maximum mold protrusion 0.15 (0.006) per side . note: 5. dimension b does not include dambar protrusion. allowable dambar protrusion shall be 0.127 (0.005) total in excess of the b dimension at maximum material condition .
44 MC44BS373CA data sheet motorola case outlines case outlines 22.2 qfn20 case figure 27. qfn20 package (1 of 4) 1 of 4
motorola MC44BS373CA data sheet 45 case outlines figure 28. qfn20 package (2 of 4) 2 of 4
46 MC44BS373CA data sheet motorola case outlines case outlines figure 29. qfn20 package (3 of 4) 3 of 4
motorola MC44BS373CA data sheet 47 case outlines figure 30. qfn20 package (4 of 4) 4 of 4
48 MC44BS373CA data sheet motorola document revision history document revision history 23 document revision history table 33 provides a revision history for this data sheet. table 33. document revision history rev. no. date substantive change(s) 2.5 05/14/2004 non-technical edits tables reformatted added note nine to figure 16 2.6 05/26/2004 corrected resistor values from 56 k ? to 5.6 k ? and from 47 k ? to 4.7 k ? in: notes to figure 16 and figure 18 section 15.11, ?sound section? corrected capacitor labeling in figure 10 corrected settings for picture-to-sound ratio in table 22 (ps bit settings were reversed) added label for note 17 on figure 18 06/16/2004 removed pin numbers from figure 2 removed warnings from figure 15, figure 16, figure 17, and figure 18 corrected spelling of pin spllflt (was splflt) changed operating temperature range from 0?70 to ?20?85. added note to section 16 stressing that i 2 c address selection is not available for the 16-pin packages
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50 MC44BS373CA data sheet motorola document revision history document revision history this page intentionally left blank
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MC44BS373CA how to reach us: usa/europe/locations not listed: motorola literature distribution p.o. box 5405, denver, colorado 80217 1-480-768-2130 (800) 521-6274 japan: motorola japan ltd. sps, technical information center 3-20-1, minami-azabu minato-ku tokyo 106-8573 japan 81-3-3440-3569 asia/pacific: motorola semiconductors h.k. ltd. silicon harbour centre, 2 dai king street tai po industrial estate, tai po, n.t., hong kong 852-26668334 technical information center: (800) 521-6274 home page: www.motorola.com/semiconductors information in this document is provided solely to enable system and software implementers to use motorola products. there are no express or implied copyright licenses granted hereunder to design or fabricate any integrated circuits or integrated circuits based on the information in this document. motorola reserves the right to make changes without further notice to any products herein. motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. ?typical? parameters which may be provided in motorola data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. all operating parameters, including ?typicals? must be validated for each customer application by customer?s technical experts. motorola does not convey any license under its patent rights nor the rights of others. motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the motorola product could create a situation where personal injury or death may occur. should buyer purchase or use motorola products for any such unintended or unauthorized application, buyer shall indemnify and hold motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that motorola was negligent regarding the design or manufacture of the part. motorola and the stylized m logo are registered in the u.s. patent and trademark office. digital dna is a trademark of motorola, inc. all other product or service names are the property of their respective owners. motorola, inc. is an equal opportunity/affirmative action employer. ? motorola, inc. 2004

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