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ultralow power video filter with power-down ada4430-1 rev. c information furnished by analog devices is believed to be accurate and reliable. however, no responsibility is assumed by analog devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. specifications subject to change without notice. no license is granted by implication or otherwise under any patent or patent rights of analog devices. trademarks and registered trademarks are the property of their respective owners. one technology way, p.o. box 9106, norwood, ma 02062-9106, u.s.a. tel: 781.329.4700 www.analog.com fax: 781.461.3113 ?2006C2010 analog devices, inc. all rights reserved. features qualified for automotive applications 6 th -order performance, low-pass video filter 1 db flatness out to 8 mhz 50 db rejection at 27 mhz ultralow power-down current: 0.1 a typical low quiescent current: 1.85 ma typical excellent video specification differential gain: 0.25% differential phase: 0.10 sag correction allows use of small capacitors in ac-coupled outputs low supply voltage: 2.5 v to 6 v rail-to-rail output high input-to-output isolation in disabled state 92 db at 1 mhz low input bias current: 0.5 a small packaging: sc70 and sot-23 (automotive grade only) wide operating temperature range: ?40c to +125c applications automotive infotainment (sot-23 only) automotive rearview cameras (sot-23 only) portable media players portable gaming consoles cell phones digital still cameras portable dvd players portable video cameras pin configuration 2 r 2 r 2 r 1 r 1 2 3 6 5 4 v s v out v in gnd sag dis 05885-001 ada4430-1 figure 1. 6.5 6.0 5.5 5.0 4.5 4.0 3.5 3.0 11 gain (db) frequency (mhz) 05885-006 0 v s = 3v v s = 5v figure 2. frequency response fl atness at various power supplies general description the ada4430-1 is a fully integrated video reconstruction filter that combines excellent video specifications with low power consumption and an ultralow power disable, making it ideal for portable video filtering applications. with 1 db frequency flatness out to 8 mhz and 50 db rejection at 27 mhz, the ada4430-1 is ideal in sd video applications, including ntsc and pal. the ada4430-1 operates on single supplies as low as 2.5 v and as high as 6 v while providing the dynamic range required by the most demanding video systems. the ada4430-1 also provides an on-chip dc offset to avoid clipping of the sync tips at the filter output, as well as sag correction that permits smaller capacitor values to be used in applications with ac-coupled outputs. the ada4430-1 is available in a two 6-lead packages. the sc70 for commercial applications and the sot-23 for automotive applications are rated to work in the extended temperature range of ?40c to +125c.
ada4430-1 rev. c | page 2 of 20 table of contents features .............................................................................................. 1 applications ....................................................................................... 1 pin configuration ............................................................................. 1 general description ......................................................................... 1 revision history ............................................................................... 2 specifications ..................................................................................... 3 absolute maximum ratings ............................................................ 5 thermal resistance ...................................................................... 5 esd caution .................................................................................. 5 pin configuration and function descriptions ............................. 6 typical performance characteristics ............................................. 7 test circuits ..................................................................................... 11 theory of operation ...................................................................... 12 overview ..................................................................................... 12 power savings using the ada4430-1 ..................................... 12 applications information .............................................................. 13 examples illustrating output coupling .................................. 13 usable input voltage range ...................................................... 14 sag correction frequency response ..................................... 14 reconstruction filter applications .......................................... 15 printed circuit board layout ................................................... 16 outline dimensions ....................................................................... 17 ordering guide .......................................................................... 18 automotive products ................................................................. 18 revision history 9/10rev. b to rev. c change automotive products section heading ......................... 18 6/10rev. a to rev. b updated pin name pd to dis throughout .................................. 1 added 6-lead sot-23 ....................................................... universal changes to features section, general description section, applications section, and figure 1 ................................................. 1 changes to table 1 ............................................................................ 3 changes to table 2 ............................................................................ 4 changes to table 4, maximum power dissipation section, and figure 3 .............................................................................................. 5 changes to figure 4 and table 5 ..................................................... 6 changes to figure 16 ........................................................................ 8 changes to figure 25 and figure 26............................................. 11 changes to overview section ....................................................... 12 changes to figure 29, figure 30, and figure 31 ......................... 13 changes to figure 33 and figure 34............................................. 15 added figure 36; renumbered sequentially .............................. 17 updated outline dimensions ....................................................... 17 changes to ordering guide .......................................................... 18 added automotive products section .......................................... 18 6/06rev. 0 to rev. a changes to figure 1 ........................................................................... 1 changes to figure 4 ........................................................................... 5 3/06revision 0: initial version
ada4430-1 rev. c | page 3 of 20 specifications v s = 3 v @ t a = 25c, v in = 1 v p-p, r l = 150 , unless otherwise noted. table 1. parameter test conditions/comments min typ max unit electrical specifications quiescent supply current 1.85 2.3 ma quiescent supply current ada4430-1w only: t min to t max 1.85 3 ma quiescent supply currentdisabled 0.1 5 a quiescent supply currentdisabled ada4430-1w only: t min to t max 0.1 6 a supply voltage ada4430-1w only: t min to t max 2.5 6 v input voltage rangelow/high limited by output range; see the applications information section 0/1.38 v input resistance 10 m input capacitance 1 pf input bias current 0.5 a output voltage rangelow/high 0.10/2.85 v output offset voltage 95 140 mv output offset voltage ada4430-1w only: t min to t max 95 200 mv psrr input referred, ada4430-1w only: t min to t max 50 60 db pass-band gain ada4430-1w only: t min to t max 5.85 6 db input-to-output isolationdisabled f = 1 mhz 92 db filter characteristics ?3 db bandwidth ada4430-1w only: t min to t max 7 9.7 mhz 1 db flatness ada4430-1w only: t min to t max 5.5 8.0 mhz out-of-band rejection f = 27 mhz; ada4430-1w only: t min to t max 40 50 db differential gain modulated 10-step ramp, sync tip at 0 v 0.25 % differential phase modulated 10-step ramp, sync tip at 0 v 0.10 degrees linear output current 40 ma group delay variation f = 100 khz to 5 mhz 7 ns signal-to-noise ratio 100% white signal, f = 100 khz to 5 mhz 76 db disable disable input voltage device disabled <0.7 v device enabled >1.1 v
ada4430-1 rev. c | page 4 of 20 v s = 5 v @ t a = 25c, v in = 1 v p-p, r l = 150 , unless otherwise noted. table 2. parameter test conditions/comments min typ max unit electrical specifications quiescent supply current 2.0 2.4 ma quiescent supply current ada4430-1w only: t min to t max 2.0 3.1 ma quiescent supply currentdisabled 0.2 10 a quiescent supply currentdisabled ada4430-1w only: t min to t max 0.2 15 a supply voltage ada4430-1w only: t min to t max 2.5 6 v input voltage rangelow/high limited by output range; see the applications information section 0/2.35 v input resistance 10 m input capacitance 1 pf input bias current 0.5 a output voltage rangelow/high 0.10/4.80 v output offset voltage 100 145 mv output offset voltage ada4430-1w only: t min to t max 100 200 mv psrr input referred, ada4430-1w only: t min to t max 50 61 db pass-band gain ada4430-1w only: t min to t max 5.85 6 db input-to-output isolationdisabled f = 1 mhz 92 db filter characteristics ?3 db bandwidth ada4430-1w only: t min to t max 7.2 9.5 mhz 1 db flatness ada4430-1w only: t min to t max 5.5 7.9 mhz out-of-band rejection f = 27 mhz, ada4430-1w only: t min to t max 40 50 db differential gain modulated 10-step ramp, sync tip at 0 v 0.25 % differential phase modulated 10-step ramp, sync tip at 0 v 0.15 degrees linear output current 40 ma group delay variation f = 100 khz to 5 mhz 7.1 ns signal-to-noise ratio 100% white signal, f = 100 khz to 5 mhz 76 db disable disable input voltage device disabled <0.8 v device enabled >1 v
ada4430-1 rev. c | page 5 of 20 absolute maximum ratings table 3. parameter rating supply voltage 6 v power dissipation see figure 3 storage temperature range ?65c to +125c operating temperature range ?40c to +125c lead temperature (soldering 10 sec) 300c junction temperature 150c the power dissipated in the package (p d ) is the sum of the quiescent power dissipation and the power dissipated in the package due to the load drive. the quiescent power is the voltage between the supply pins (v s ) times the quiescent current (i s ). the power dissipated due to the load drive depends upon the particular application. the power due to load drive is calculated by multiplying the load current by the associated voltage drop across the device. rms voltages and currents must be used in these calculations. stresses above those listed under absolute maximum ratings may cause permanent damage to the device. this is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. airflow increases heat dissipation, effectively reducing ja . in addition, more metal directly in contact with the package leads from metal traces, through holes, ground, and power planes reduces the ja . figure 3 shows the maximum safe power dissipation in the package vs. the ambient temperature for the 6-lead sc70 (430c/w) and the 6-lead sot-23 (170c/w) on a jedec standard 4-layer board. thermal resistance ja is specified for the worst-case conditions, that is, ja is specified for a device soldered in the circuit board. 05885-002 1.2 1.0 0.8 0.6 0.4 0.2 0 ?40 120 100 806040 020 ?20 maximum power dissipation (w) ambient temperature (c) sot-23 sc70 table 4. thermal resistance package type ja unit 6-lead sc70 430 c/w 6-lead sot-23 170 c/w maximum power dissipation the maximum safe power dissipation in the ada4430-1 package is limited by the associated rise in junction temperature (t j ) on the die. at approximately 150c, which is the glass transition temperature, the plastic changes its properties. even temporarily exceeding this temperature limit can change the stresses that the package exerts on the die, permanently shifting the parametric performance of the ada4430-1. exceeding a junction temperature of 150c for an extended period can result in changes in the silicon devices, potentially causing failure. figure 3. maximum power dissipation vs. temperature for a 4-layer board esd caution
ada4430-1 rev. c | page 6 of 20 pin configuration and fu nction descriptions 2 r 2 r 2 r 1 r 1 2 3 6 5 4 v s v out v in gnd sag dis 05885-041 ada4430-1 figure 4. 6-lead sc70 and sot23 top view table 5. pin function descriptions pin umber nemonic description 1 v in input voltage. 2 gnd ground. 3 sag feedback connection. 4 v out output voltage. 5 dis disable. 6 v s positive power supply.
ada4430-1 rev. c | page 7 of 20 typical performance characteristics v s = 3 v, r l , = 150 , v out = 2.0 v p-p, dis = high, v out connected directly to sag, t a = 25c, unless otherwise noted. 9 ?48 ?45 ?42 ?39 ?36 ?33 ?30 ?27 ?24 ?21 ?18 ?15 ?12 ?9 ?6 ?3 0 3 6 11 0 0 10 gain (db) frequency (mhz) 05885-003 v s = 5v v s = 3v figure 5. frequency response at various power supplies 9 ?48 ?45 ?42 ?39 ?36 ?33 ?30 ?27 ?24 ?21 ?18 ?15 ?12 ?9 ?6 ?3 0 3 6 11 0 0 10 gain (db) frequency (mhz) 05885-004 r l = 150 ? r l = 75 ? figure 6. frequency response at various loads 9 ?48 ?45 ?42 ?39 ?36 ?33 ?30 ?27 ?24 ?21 ?18 ?15 ?12 ?9 ?6 ?3 0 3 6 11 0 0 10 gain (db) frequency (mhz) 05885-005 +125c +25c ?40c figure 7. frequency response at various temperatures 6.5 6.0 5.5 5.0 4.5 4.0 3.5 3.0 11 gain (db) frequency (mhz) 05885-006 0 v s = 3v v s = 5v figure 8. frequency response fl atness at various power supplies 6.5 6.0 5.5 5.0 4.5 4.0 3.5 3.0 gain (db) frequency (mhz) 05885-007 r l = 75 ? 11 0 r l = 150 ? figure 9. frequency response flatness at various loads 6.5 6.0 5.5 5.0 4.5 4.0 3.5 3.0 gain (db) frequency (mhz) 05885-008 +125c +25c ?40c 11 0 figure 10. frequency response flatness at various temperatures
ada4430-1 rev. c | page 8 of 20 9 ?48 ?45 ?42 ?39 ?36 ?33 ?30 ?27 ?24 ?21 ?18 ?15 ?12 ?9 ?6 ?3 0 3 6 11 0 0 10 gain (db) frequency (mhz) 05885-009 0.2v p-p 2.0v p-p figure 11. frequency response at various output amplitudes ? 50 ?150 ?145 ?140 ?135 ?130 ?125 ?120 ?115 ?110 ?105 ?100 ?95 ?90 ?85 ?80 ?75 ?70 ?65 ?60 ?55 1 06 5 4 3 2 (db) frequency (mhz) 05885-010 noise spectrum (ntsc) input referred bandwidth 100khz to 5.0mhz amplitude (0db = 714mv p-p) noise level = ?76.8db rms figure 12. input-referred noise spectral density ? 40 ?130 ?120 ?110 ?100 ?90 ?80 ?70 ?60 ?50 0.01 100 10 1 0.1 isolation (db) frequency (mhz) 05885-011 v in = 1v p-p v dis = 0v output referred figure 13. input-to-output isol ationdisabled vs. frequency 65 60 55 50 45 40 35 30 11 10 group delay (ns) frequency (mhz) 05885-012 0 0 v s = 3v v s = 5v figure 14. group delay at various power supplies 0 ?5 ?10 ?15 ?20 ?25 ?30 ?35 ?40 ?45 ?50 ?55 ?60 ?65 0.001 0.01 100 10 1 0.1 psrr (db) frequency (mhz) 05885-013 5v 3v input referred figure 15. psrr vs. frequency at various power supplies 10 100 1000 10000 0.1 1 10 100 500 v dis =0v 05885-030 frequency (mhz) impedance ( ? ) figure 16. disabled output impedance vs. frequency
ada4430-1 rev. c | page 9 of 20 3.0 2.5 2.0 1.5 1.0 0.5 0 output voltage (v) 05885-015 100ns/div figure 17. transient response 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 ?0.5 output voltage (v) 05885-016 disable disable output 1s/div figure 18. disable assert time ?1.0 ?0.5 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 output 2 input 05885-033 output (v) 200ns/div figure 19. overdrive recovery 3.00 2.75 2.50 2.25 2.00 1.75 1.50 1.25 1.00 0.75 0.50 0.25 0 3.0 2.5 2.0 1.5 1.0 0.5 0 ?0.5 ?1.0 ?1.5 ?2.0 ?2.5 ?3.0 output voltage (v) error (%) 05885-018 error input 2 output 50ns/div figure 20. settling time 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 ?0.5 output voltage (v) 500ns/div 05885-019 disable output figure 21. disable deassert time ?0.20 ?0.19 ?0.18 ?0.17 ?0.16 ?0.15 ?0.14 ?0.13 ?0.12 ?0.11 ? 0.10 ?40?25?105 203550658095110125 05885-031 temperature (c) difference between v s and v out (v) figure 22. output swing limits vs. temperature
ada4430-1 rev. c | page 10 of 20 1.85 1.80 1.75 1.70 1.65 400 300 200 100 0 120 10080604020 0 ?20 ?40 power supply current?enabled (ma) power supply current?disabled (na) temperature (c) 05885-021 disabled (v dis = 0v) enabled (v dis = 3v) 2.0 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 3.0 2.5 2.0 1.5 1.0 0.5 0 power supply current (ma) disable voltage (v) 05885-022 +125c +25c ?40c figure 23. power supply current vs. temperature figure 24. power supply current vs. disable voltage at various temperatures
ada4430-1 rev. c | page 11 of 20 test circuits 2.6k ? 2.6k ? 2.6k ? 1.3k ? sag gnd v in v out dis v s ada4430-1 1 2 3 4 5 6 118 ? r l = 150 ? 50 ? 86.6 ? 0.1f test generator v s+ 05885-038 50? 50 ? test receiver 0.5v 1 figure 25. test circuit used for fr equency sweeps and time-domain tests 2.6k ? 2.6k ? 2.6k ? 1.3k ? sag gnd v in v out ada4430-1 1 2 3 4 5 6 75 ? r l = 150 ? 75 ? 0.1f test generato r dis v s v s+ 05885-039 75 ? 150 ? 150 ? test receiver 1.0v 220f 1 figure 26. test circuit used for differentia l gain, differential phase, and noise tests
ada4430-1 rev. c | page 12 of 20 theory of operation overview the internal buffer at the ada4430-1 input isolates the source resistance feeding the ada4430-1 from the internal filter networks. high input impedance is also advantageous when using video clamping circuits. the ada4430-1 is designed for exceptional performance as both a filter and a low power driver for portable video applica- tions. this performance is achieved by providing high order filtering without trading off power consumption or device size. while consuming only 1.85 ma quiescent supply current, the ada4430-1 provides video output on a single-supply as low as 2.5 v. such low power consumption and low supply operation normally indicates a single op amp with a two- or three-pole roll-off; however, the ada4430-1 achieves a sixth-order roll-off in addition to a 10 m input impedance for easy clamping and lower dac output power requirements. when not in use, the ada44330-1 can be shut down to draw less than 0.1 a of supply current using the disable pin ( dis ). additionally, the ada4430- 1 is unique in that it is a high order filter that fits into an sc70 package. the output buffer feedback network used to create a gain of 2 is connected internally to the gnd pin and has a nominal impedance of 5.2 k. the current required to drive this feedback network causes the overall supply current to vary based on the output level. the feedback impedance was chosen specifically to minimize excess current consumption while maintaining optimal frequency behavior. power savings using the ada4430-1 using a series source termination and a shunt load termination on a low supply voltage with the ada4430-1 realizes significant power savings compared with driving a video cable directly from a dac output. figure 27 shows a video dac driving a cable directly. properly terminating the line results in the dac driving two 75 loads and requires in excess of 30 ma to reach a full- scale level of 1.3 v. figure 28 shows the same video load being driven using the ada4430-1 and a series-shunt termination. this requires two times the output voltage to drive the equivalent of 150 but only requires a little more than 15 ma to reach a full- scale output. when running on the same supply voltage as the dac, this results in nearly a factor of two reduction in power compared with the circuit in figure 27 . the high level of filtering provided by the ada4430-1 lowers the requirements on the dac oversampling ratio, realizing further power savings. on any given dac, 8 and 16 oversampling ratios can require twice the power consumption of a 4 oversampling ratio. the ada4430-1 provides a minimum 1 db bandwidth of 5.5 mhz and a typical stop-band rejection of 50 db at 27 mhz. phase response is not sacrificed in spite of the exceptional filtering performance of the ada4430-1, as exhibited by its group delay, which varies by only 7 ns from 100 khz to 5 mhz. the ada4430-1 is intended for use in applications that have both ac- and dc-coupled inputs and outputs. the rail-to-rail buffer on the ada4430-1 output is able to drive 2 v p-p video signals into two doubly terminated video loads (150 each) on a single 2.5 v supply. the ada4430-1 has a gain of 2 when the sag correction pin is tied directly to the output, which makes up for the 6 db termination loss. when the sag feature is used (see figure 29 ), the ada4430-1 has a low frequency gain of 2.5 ( 8 db) and a high frequency gain of 2. signal offsets and supply levels must be considered when using the sag correction feature to ensure that there are no headroom issues. 3 v video dac/ encoder 75? 75 ? 05885-034 the input range of the ada4430-1 includes ground, while the output range is limited by the saturation of the output devices. saturation occurs several tens of mv from the positive and negative supply rails. for accurate reproduction of ground- referenced input signals, an internal offset is used to shift the output up by 95 mv. figure 27. dac driving video cable directly 0.1f 3 v r l video dac/ encoder ada4430-1 filter g = +2 75? 75 ? 05885-035 the high input impedance and low input capacitance of the ada4430-1 offer advantages in a number of low power applications. in reconstruction filter applications, the dac can be placed in its lowest power mode, allowing the use of a large- valued load resistor. using a large-valued load resistor does not interfere with the frequency response of the ada4430-1. figure 28. dac driving video cable using the ada4430-1
ada4430-1 rev. c | page 13 of 20 applications information examples illustrating output coupling the ada4430-1 is ideally suited for use as a reconstruction filter that follows a video dac or encoder. the application circuits in figure 29 , figure 30 , and figure 31 illustrate a number of ways the ada4430-1 can be used with a single- supply current-output dac on its input and its output ac- and dc-coupled. sag correction allows the use of two small, lower cost capacitors in place of one large capacitor in applications with ac-coupled outputs. circuits with ac-coupled outputs consume less power than those with dc-coupled outputs. 2.6k ? 2.6k ? 2.6k ? 1.3k ? sag gnd v in v out r l video out dis v s 3v disable control 0.1f ada4430-1 1 2 3 4 56 video dac/encoder 05885-027 75 ? 47f 22f 1 figure 29. ac-coupled output with sag correction 2.6k ? 2.6k ? 2.6k ? 1.3k ? sag gnd v in v out r l video out 3v disable control 0.1f ada4430-1 1 2 3 4 56 video dac/encoder 0 5885-028 75 ? 220f dis v s 1 figure 30. traditional ac-coupled outp ut with 220 f coupling capacitor 2.6k ? 2.6k ? 2.6k ? 1.3k ? sag gnd v in v out r l v ideo ou t 3 v disable control 0.1f ada4430-1 1 2 3 4 56 video dac/encoder 05885-029 75? dis v s 1 figure 31. dc-coupled output
ada4430-1 rev. c | page 14 of 20 usable input voltage range the output voltage range of the ada4430-1 limits its usable input voltage range. the lower end of the input range is typically 0 v. the upper end of the usable input voltage range is calculated as v in ( max ) = (v om ? v oo )/2 where: v in ( max ) is the upper end of the usable input voltage range. v om is the maximum output swing. v oo is the output-referred offset voltage. sag correction frequency response when using the sag corrected circuit, the gain from the input to the immediate output of the ada4430-1 is 2.5 ( 8 db) at extremely low frequencies where the outer feedback loop formed by the 22 f capacitor effectively opens (see figure 29 ) and exhibits a second-order peak of approximately 11 db at about 5 hz. this gain is approximately 7.5 db at 30 hz. the extra gain must be accounted for when considering low frequency input and output signal swings to keep them within their specified limits. the gain from the ada4430-1 input to the load side of the 47 f capacitor does not exhibit this behavior; rather, it appears more like a single-pole high- pass response. figure 32 illustrates the sag frequency response immediately at the ada4430-1 output and at the load side of the 47 f capacitor. 12 10 8 6 4 2 0 ?2 ?4 ?6 ?8 ?10 1 10 100 1000 100000 10000 05885-040 gain (db) frequency (hz) at ada4430-1 output at load side of 47f capacitor figure 32. sag corrected frequency response at ada4430-1 output and at the load side of the 47 f capacitor
ada4430-1 rev. c | page 15 of 20 reconstruction filter applications figure 33 illustrates how to use the ada4430-1 as a dc-coupled reconstruction filter with a pass-band gain of 2 following the low power adv7190 / adv7191 video encoder. one adv7190 / adv7191 output dac is shown for illustrative purposes, and the remaining portions of the adv7190 / adv7191 are omitted. the adv7190 / adv7191 is operated in 4 oversampling mode. the 2.4 k resistor, r set , shown in figure 33 sets the dac output current to its minimum full-scale value of 2.16 ma, and the 600 load resistor produces a full-scale voltage of 1.296 v at the ada4430-1 input. figure 34 illustrates another reconstruction filter application, following the adv7174 video encoder. as in figure 33 , one adv7174 output dac is shown for illustrative purposes, and the remaining portions of the adv7174 are omitted. the 1041 resistor, r set , shown in figure 34 , sets the dac output current to its minimum full-scale value of 5 ma, and the 262.5 load resistor produces a full-scale voltage of 1.313 v at the ada4430-1 input. the adv7174 can produce a maximum full-scale dac output current of approximately 35 ma and is therefore capable of driving the video cable directly; however, as shown in figure 34 , the ada4430-1 offers a lower power cable-driving option. figure 34 reveals the details of how the ada4430-1 saves power when driving video cables with terminations at both ends. a full-scale level at the dac output produces 2.626 v at the ada4430-1 output, which in turn delivers 17.5 ma into the cable. in the case shown in figure 27 , the output voltage is 1.313 v, but the current driven into the cable is 35 matwice that required when the ada4430-1 is used. therefore, the ada4430-1 allows the video encoder to be operated at its minimum full-scale output current, and it efficiently handles the cable-driving burden. 2.6k ? 2.6k ? 2.6k ? 1.3k ? sag gnd v in v out adv7190/adv7191 dac dis v s disable control ada4430-1 1 2 3 4 5 6 2.4k ? 600? 75? 75? 75? cable 0.1f 0.1f r set 17, 25, 29, 38, 43, 54, 63 34, 48 18, 24, 26, 33, 39, 42, 55, 64 agnd v aa 3v 05885-036 1 figure 33. using the ada4430-1 with the adv7190/adv7191 video encoder 2.6k ? 2.6k ? 1.3k ? sag gnd v in v out adv7174 dac v s disable control ada4430-1 1 2 3 4 5 6 1041 ? (931 ? + 110 ? ) 75? 75 ? 75? cable 0.1f 0.1f r set 2, 10, 18, 25, 27 31 6-9, 11, 12, 17, 19, 26, 40 agnd v aa 3 v 05885-037 262.5 ? (191 ? + 71.5 ? ) 2.6k ? dis 1 figure 34. using the ada4430-1 with the adv7174 video encoder
ada4430-1 rev. c | page 16 of 20 printed circuit board layout as with all high speed applications, attention to printed circuit board layout is of paramount importance. standard high speed layout practices should be adhered to when designing with the ada4430-1. a solid ground plane is recommended, and a 0.1 f surface-mount, ceramic power supply, decoupling capacitor should be placed as close as possible to the supply pin. the gnd pin should be connected to the ground plane with a trace that is as short as possible. controlled impedance traces of the shortest length possible should be used to connect to the signal i/o pins and should not pass over any voids in the ground plane. a 75 impedance level is typically used in video applications. all signal outputs of the ada4430-1 should include series termination resistors when driving transmission lines. when the ada4430-1 receives its inputs from a device with current outputs, the required load resistor value for the output current is most often different from the characteristic impedance of the signal traces. in this case, if the interconnections are sufficiently short (less than 2 inches), the trace does not have to be terminated in its characteristic impedance.
ada4430-1 rev. c | page 17 of 20 outline dimensions 1.30 bsc compliant to jedec standards mo-203-ab 1.00 0.90 0.70 0.46 0.36 0.26 2.20 2.00 1.80 2.40 2.10 1.80 1.35 1.25 1.15 072809-a 0.10 max 1.10 0.80 0.40 0.10 0.22 0.08 3 12 4 6 5 0.65 bsc coplanarity 0.10 seating plane 0.30 0.15 figure 35. 6-lead thin shrink small outline transistor package [sc70] (ks-6) dimensions shown in millimeters compliant to jedec standards mo-178-ab 121608-a 10 4 0 seating plane 1.90 bsc 0.95 bsc 0.60 bsc 65 123 4 3.00 2.90 2.80 3.00 2.80 2.60 1.70 1.60 1.50 1.30 1.15 0.90 0 .15 max 0 .05 min 1.45 max 0.95 min 0.20 max 0.08 min 0.50 max 0.30 min 0.55 0.45 0.35 pin 1 indicator figure 36. 6-lead small outline transistor package [sot-23] (rj-6) dimensions shown in millimeters
ada4430-1 rev. c | page 18 of 20 ordering guide model 1 , 2 temperature range package description pack age option branding ordering quantity ADA4430-1YKSZ-R2 ?40c to +125c 6-lead sc70 ks-6 h0g 250 ada4430-1yksz-r7 ?40c to +125c 6-lead sc70 ks-6 h0g 3,000 ada4430-1yksz-rl ?40c to +125c 6-lead sc70 ks-6 h0g 10,000 ada4430-1wyrtz-r7 ?40c to +125c 6-lead sot-23 rj-6 h25 3,000 1 z = rohs-compliant part. 2 w = qualified for auto motive applications. automotive products the ada4430-1w model is available with controlled manufacturing to support the quality and reliability requirements of automoti ve applications. note that these automotive models may have specifications that differ from the commercial models; therefore, desi gners should review the specifications section of this data sheet carefully. only the automotive grade products shown are available f or use in automotive applications. contact your local analog devices account representative for specific product ordering information and to obtain the specific automotive reliability reports for these models.
ada4430-1 rev. c | page 19 of 20 notes
ada4430-1 rev. c | page 20 of 20 notes ?2006C2010 analog devices, inc. all rights reserved. trademarks and registered trademarks are the prop erty of their respective owners. d05885-0-9/10(c)

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