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EVB7120 300 to 930mhz transceiver evaluation board description 390120712002 page 1 of 20 evb description rev. 009 okt/02 p r e l i m i n a r y features ! single chip solution with only a few external components ! stand-alone fixed-frequency transceiver operation modes ! programmable multi-channel transceiver operation modes ! low current consumption in active mode and very low standby current ! pll-stabilized rf vco (lo) with internal varactor diode ! lock detection in programmable channel applications ! 3wire bus serial control interface ! fsk/ask modulation selection ! fsk for digital data and fm for analog signal reception ! rssi allows signal strength indication and ask detection ! switchable lna gain for improved dynamic range ! automatic pa turn-on after pll lock ! fm possible with external varactor ! ask modulation achieved by on/off keying ! afc option for extended input frequency acceptance range ordering information part no. EVB7120-433-fsk EVB7120-868-fsk EVB7120-433-ask EVB7120-868-ask EVB7120-315-fsk (on request) EVB7120-915-fsk (on request) EVB7120-315-ask (on request) EVB7120-915-fsk (on request) application examples ! general bi-directional half duplex digital data transmission or analog signal transmission ! low-power telemetry ! alarm and security systems ! keyless car and central locking ! home automation ! model control technical data overview ! frequency range: 300 mhz to 930 mhz for programmable channel applications ! 315 mhz, 433 mhz, 868 mhz or 915 mhz fixed-frequency single-channel variants ! power supply range: 2.2 v to 5.5 v ! temperature range: -40 c to +85 c ! standby current: 50 na ! operating current: 7.5 ma in receive mode at low gain ! operating current 12 ma in transmit mode at -2 dbm output power ! adjustable output power range from ?15 dbm to +6 dbm ! sensitivity: -103 dbm at fsk with 150 khz if filter bw ! sensitivity: -105 dbm at ask with 150 khz if filter bw ! maximum data rate for fsk and ask: 40 kbit/s nrz ! maximum input level: ?10 dbm at fsk and -20 dbm at ask ! input frequency acceptance: 50 khz (with afc option) ! frequency deviation range: 2.5 khz to 80 khz ! maximum analog modulation frequency: 10 khz ! 3 mhz to 12 mhz crystal reference
EVB7120 300 to 930mhz transceiver evaluation board description 390120712002 page 2 of 20 evb description rev. 009 okt/02 p r e l i m i n a r y general description the th7120 is a single chip fsk/fm/ask transceiver ic. it is designed to operate in low-power multi-channel programmable or single-channel stand-alone, half-duplex data transmission systems. it can be used for ism, srd or similar applications operating in the frequency ranging of 300 mhz to 930 mhz. the th7120 transceiver ic consists of the following building blocks: " low-noise amplifier (lna) for high-sensitivity rf signal reception with switchable gain " mixer (mix) for rf-to-if down-conversion " if amplifier (ifa) to amplify and limit the if signal and for rssi generation " phase-coincidence demodulator with external ceramic discriminator (fsk demodulator) " operational amplifier, connected to demodulator output (oa1) " operational amplifier, integrator circuit at fsk-afc mode (oa2) " control logic with 3wire bus serial control interface (sci) " reference oscillator (ro) with external crystal " reference divider (r counter) " programmable divider (n/a counter) " phase-frequency detector (pfd) " charge pump (cp) " voltage control oscillator (vco) with internal varactor " power amplifier (pa) with adjustable output power the transceiver can be used either as a 3wire-bus-controlled programmable or as a stand-alone fixed- frequency device. after power up, the transceiver is set to fixed-frequency mode. in this mode, pins fs0/sden and fs1/ld must be connected to v ee or v cc in order to set the desired frequency of operation. the logic levels at pins fs0/sden and fs1/ld must not be changed after power up in order to remain in fixed-frequency mode. after the first logic level change at pin fs0/sden, the transceiver enters into programmable mode while pin fs1/ld is now a pll lock detector output. in this mode, the user can set any pll frequency or mode of op- eration by the sci. for more detailed information, please refer to the latest th7120 data sheet revision.
EVB7120 300 to 930mhz transceiver evaluation board description 390120712002 page 3 of 20 evb description rev. 009 okt/02 p r e l i m i n a r y block diagram figure 1: th7120 block diagram in_lna lna gain_lna out_lna in_mix out_dta oa2 bias if mix out_mix1 in_ifa vee_if ifa in_dem 26 29 28 30 32 31 1 vcc_if 2 3 out_dem 6 oa1 8 int1 5 int2 4 rssi 7 1.5pf 200k vee_lna 27 demodulator fsk vee_pll out_pa fsk ask lo in_dta ask/fsk re/sclk te/sdta fs0/sden 25 vcc_pll 20 ps_pa 24 fsk_sw fs1/ld vee_ro 11 19 9 17 16 15 13 12 ro ro r counter n counter ro 10 lf 21 sclk sdta sden control logic sci tnk_lo 23 vco 22 pa 18 vee_dig 14 vcc_dig
EVB7120 300 to 930mhz transceiver evaluation board description 390120712002 page 4 of 20 evb description rev. 009 okt/02 p r e l i m i n a r y stand-alone fixed-frequency operation after power up the transceiver is set to fixed-frequency mode. in this mode, pins fs0/sden and fs1/ld must be connected to v ee or v cc to set the desired frequency of operation. the logic levels at pins fs0/sden and fs1/ld must not be changed after power up in order to remain in fixed-frequency mode. the default settings of the control word bits in stand-alone mode are described in the frequency selection table. frequency selection channel frequency 433.92 mhz 868.3 mhz 315 mhz 915 mhz fs0/sden 1010 fs1/ld 0011 reference oscillator frequency 7.1505 mhz r counter ratio in rx mode 16 16 18 30 pfd frequency in rx mode 446.91 khz 446.91 khz 397.25 khz 238.35 khz n/a counter ratio in rx mode 947 1919 766 3794 vco frequency in rx mode 423.22 mhz 857.60 mhz 304.30 mhz 904.30 mhz rx frequency 433.92 mhz 868.30 mhz 315.00 mhz 915.00 mhz r counter ratio in tx mode 16 16 18 30 pfd frequency in tx mode 446.91 khz 446.91 khz 397.25 khz 238.35 khz n/a counter ratio in tx mode 971 1943 793 3839 vco frequency in tx mode 433.92 mhz 868.30 mhz 315.00 mhz 915.00 mhz tx frequency 433.92 mhz 868.30 mhz 315.00 mhz 915.00 mhz if frequency in rx mode 10.7 mhz 10.7 mhz 10.7 mhz 10.7 mhz in the fixed-frequency mode, the user can set the transceiver to standby, receive, transmit or idle (only pll synthesizer active) mode via control pins re/sclk and te/sdta. operation mode standby receive transmit idle re/sclk 0101 te/sdta 0011 in this mode, the modulation type selection can be done via pin ask/fsk modulation type ask fsk ask / fsk 01
EVB7120 300 to 930mhz transceiver evaluation board description 390120712002 page 5 of 20 evb description rev. 009 okt/02 p r e l i m i n a r y default register settings after power-up bits a-word symbols channel ?00? 868.3 mhz channel ?01? 433.92 mhz channel ?10? 915.0 mhz channel ?11? 315.0 mhz b-word symbols channel ?00? 868.3 mhz channel ?01? 433.92 mhz channel ?10? 915.0 mhz channel ?11? 315.0 mhz 21 not used 0 not used 0 20 di_mode 0 not used 0 19 modul 0 endelpll 1 18 highcur 0 lnahyst 1 17 lock_mode 0 enadj 0 16 pa_auto 0 enfm 0 15 pow1 1 max2 1 14 pow0 1 max1 1 13 mixg 1 max0 1 12 lnag 1 min2 0 11 te 0 min1 1 10 re 0 min0 1 9 rr9 0 0 0 0 rt9 0 0 0 0 8 rr8 0 0 0 0 rt8 0 0 0 0 7 rr7 0 0 0 0 rt7 0 0 0 0 6 rr6 0 0 0 0 rt6 0 0 0 0 5 rr5 0 0 0 0 rt5 0 0 0 0 4 rr4 1 1 1 1 rt4 1 1 1 1 3 rr3 0 0 1 0 rt3 0 0 1 0 2 rr2 0 0 1 0 rt2 0 0 1 0 1 rr1 0 0 1 1 rt1 0 0 1 1 0 rr0 0 0 0 0 rt0 0 0 0 0 bits c-word symbols channel ?00? 868.3 mhz channel ?01? 433.92 mhz channel ?10? 915.0 mhz channel ?11? 315.0 mhz b-word symbols channel ?00? 868.3 mhz channel ?01? 433.92 mhz channel ?10? 915.0 mhz channel ?11? 315.0 mhz 21 lnagi_e 0 modul_ctr 0 20 polar 0 ld_tm1 1 19 high2 0 0 0 0 ld_tm0 0 18 high1 1 1 1 1 er_tm1 0 17 up 1 0 1 0 er_tm0 0 16 nr16 0 0 0 0 nt16 0 0 0 0 15 nr15 0 0 0 0 nt15 0 0 0 0 14 nr14 0 0 0 0 nt14 0 0 0 0 13 nr13 0 0 0 0 nt13 0 0 0 0 12 nr12 0 0 0 0 nt12 0 0 0 0 11 nr11 0 0 1 0 nt11 0 0 1 0 10 nr10 1 0 1 0 nt10 1 0 1 0 9 nr9 1 1 1 1 nt9 1 1 1 1 8 nr8 1 1 0 0 nt8 1 1 0 1 7 nr7 0 1 1 1 nt7 1 1 1 0 6 nr6 1 0 1 1 nt6 0 1 1 0 5 nr5 1 1 0 1 nt5 0 0 1 0 4 nr4 1 1 1 1 nt4 1 0 1 1 3 nr3 1 0 0 1 nt3 0 1 1 1 2 nr2 1 0 0 1 nt2 1 0 1 0 1 nr1 1 1 1 1 nt1 1 1 1 0 0 nr0 1 1 0 0 nt0 1 1 1 1
EVB7120 300 to 930mhz transceiver evaluation board description 390120712002 page 6 of 20 evb description rev. 009 okt/02 p r e l i m i n a r y programmable channel operation serial control interface description a 3-wire (sclk, sdta, sden) serial control interface (sci) is used to program the transceiver in multi- channel mode (see fig. 2). at each rising edge of the sclk signal, the logic value on the sdta pin is written into a 24-bit shift register. the data stored in the shift register are loaded into one of the 4 appropriate latches on the rising edge of sden. the control words are 24 bits lengths: 2 address bits and 22 data bits. the first two bits (bit 23 and 22) are latch address bits. as additional leading bits are ignored, only the least significant 24 bits are serial-clocked into the shift register. the first incoming bit is the most significant bit (msb). to program the transceiver in multi-channel application, four 24-bit words may be sent: a-word, b-word, c-word and d-word. if individual bits within a word have to be changed, then it is sufficient to program only the appro- priate 24-bit word. the serial data input timing and the structure of the control words are illustrated in fig. 2 and 3. table register settings describes the function of each bit. figure 2: sci block diagram due to the static cmos design, the sci consumes virtually no current and it can be programmed in active as well as in standby mode. figure 3: serial data input timing t eh t ew t es t cwh t cwl t ch t cs bit 22 bit 1 bit 0 bit 23 data invalid lsb msb sdta sclk sden data invalid a - latch addr decoder b - latch c - latch d - latch 22 a-word 22 22 ?? 00 ?? 10 ?? 11 ?? 01 2 22 22 22 22 b-word 22 d-word 22 c-word 24-bit shift register sden sdta sclk
EVB7120 300 to 930mhz transceiver evaluation board description 390120712002 page 7 of 20 evb description rev. 009 okt/02 p r e l i m i n a r y sci words a-word msb ls b 23222120191817161514131211109876543210 00 xxxxxxxxxxxxxxxxxxxxxx addr not used di_mode modul highcur lock_mode pa_auto pow1 pow0 mixg lnag te re rr9 rr8 rr7 rr6 rr5 rr4 rr3 rr2 rr1 rr0 b-word msb ls b 23222120191817161514131211109876543210 01 xxxxxxxxxxxxxxxxxxxxxx addr not used not used endelpll lnahyst enadj enfm max2 max1 max0 min2 min1 min0 rt9 rt8 rt7 rt6 rt5 rt4 rt3 rt2 rt1 rt0 c-word msb ls b 23222120191817161514131211109876543210 10 xxxxxxxxxxxxxxxxxxxxxx addr lnagi_e polar high2 high1 up nr16 nr15 nr14 nr13 nr12 nr11 nr10 nr9 nr8 nr7 nr6 nr5 nr4 nr3 nr2 nr1 nr0 d-word msb ls b 23222120191817161514131211109876543210 11 xxxxxxxxxxxxxxxxxxxxxx addr modul_ctr ld_tm1 ld_tm0 er_tm1 er_tm0 nt16 nt15 nt14 nt13 nt12 nt11 nt10 nt9 nt8 nt7 nt6 nt5 nt4 nt3 nt2 nt1 nt0
EVB7120 300 to 930mhz transceiver evaluation board description 390120712002 page 8 of 20 evb description rev. 009 okt/02 p r e l i m i n a r y register settings a-word symbol bits no. description software button rr9:rr0 rr9:rr0 [9:0] 10 reference divider ratio in rx mode te:re [11:10] 2 select active mode at programmable-channel application: opmode ?00? ?11? ?10? ?01? standby mode idle mode transmit mode receive mode lnag [12] 1 select lna gain at internal gain control: lnagain ?0? ?1? low lna gain high lna gain mixg [13] 1 select mixer conversion gain at programmable-channel application: mixgain ?0? ?1? low gain high gain pow1:pow0 [15:14] 2 select output power at programmable-channel application: txpower ?00? ?01? ?10? ?11? p max - 20 dbm p max - 12 dbm p max - 6 dbm p max pa_auto [16] 1 disable automatic pa turn-on after pll lock: pa_auto ?0? ?1? enabled disabled lock_mode [17] 1 select pfd output analyse mode of lock detecting: lock_mode ?0? ?1? before lock only before and after lock. highcur [18] 1 select charge pump output current: cpcur ?0? ?1? 260 a 1300 a modul [19] 1 select modulation mode at internal modulation control: ask/fsk ?0? ?1? ask fsk di_mode [20] 1 select mode for input data: ?0? normal di_mode ?0? for space at ask or f min at fsk, ?1? for mark at ask or f max at fsk ?1? inverse ?1? for space at ask or f min at fsk, ?0? for mark at ask or f max at fsk not used [21] 1 ?x?
EVB7120 300 to 930mhz transceiver evaluation board description 390120712002 page 9 of 20 evb description rev. 009 okt/02 p r e l i m i n a r y b-word symbol bits no. description software button rt9:rt0 rt9:rt0 [9:0] 10 reference divider ratio in tx mode min2:min0 [12:10] 3 select minimum value of ro active current: romin ?000? ?001? ?010? ?011? ?100? ?101? ?110? ?111? 0 a 50 a 100 a 150 a 200 a 250 a 300 a 350 a max2:max0 [15:13] 3 select maximum value of ro active current: romax ?000? ?001? ?010? ?011? ?100? ?101? ?110? ?111? 0 a (ro is off) 50 a 100 a 150 a 200 a 250 a 300 a 350 a enfm [16] 1 test bit. forced '0' for correct functioning. enadj [17] 1 test bit. forced '0' for correct functioning. lnahyst [18] 1 enable lna hysteresis: lnahyst ?1? ?0? disabled enabled endelpll [19] 1 enable delayed start of the pll: endelpll ?1? ?0? disabled enabled. not used [20] 1 ?x? not used [21] 1 ?x?
EVB7120 300 to 930mhz transceiver evaluation board description 390120712002 page 10 of 20 evb description rev. 009 okt/02 p r e l i m i n a r y c-word symbol bits no. description software button nr16:nr0 nr16:nr0 [16:0] 17 feedback divider ratio in rx mode up [17] 1 select frequency band: band ?0? ?1? up to 500 mhz 500 to 1000mhz high2:high1 [19:18] 2 select vco active current: vcocur ?00? ?01? ?10? ?11? low current (250 a) standard current (350 a) high1 current (450 a) high2 current (550 a) polar [20] 1 select phase detector polarity: pfdpol ?1? ?0? positive (1) negative (2) (2) (1) frequency output vco vco input voltage lnagi_e [21] 1 select lna gain control mode: lnactrl ?0? ?1? external lna gain control internal lna gain control
EVB7120 300 to 930mhz transceiver evaluation board description 390120712002 page 11 of 20 evb description rev. 009 okt/02 p r e l i m i n a r y d-word symbol bits no. description software button nt16:nt0 nt16:nt0 [16:0] 17 feedback divider ratio in tx mode er_tm1:er_tm0 [18:17] 2 select maximum enabled pfd output error for lock detecting (in reference frequency clocks): er_tm1:er_tm0 ?00? ?01? ?10? ?11? 2 clocks 4 clocks 8 clocks 16 clocks ld_tm1:ld_tm0 [20:19] 2 select minimum number of pfd reference frequency clocks before lock detecting: ld_tm1:ld_tm0 ?00? ?01? ?10? ?11? 4 clocks 16 clocks 64 clocks 256 clocks modul_ctr [21] 1 select mode of modulation control: modctrl ?0? ?1? external modulation control internal modulation control
EVB7120 300 to 930mhz transceiver evaluation board description 390120712002 page 12 of 20 evb description rev. 009 okt/02 p r e l i m i n a r y fsk application circuit figure 4: circuit for fsk operation fs0/sden fs1/ld te/sdta re/sclk ask/fsk xtal cx1 cx2 cb7 in_ifa fs0/sden 32 31 30 29 28 27 26 25 cerfil 2 1 3 23 1 2 3 1 23 1 2 1 3 tnk_lo in_dem int2 int1 out_dem rssi out_dta vcc vee ro fsk_sw in_dta ask/fsk vcc re/sclk gain_lna vee in_mix out_mix out_pa out_lna vee vcc vee vee lf fs1/ld 17 18 19 20 21 22 23 24 9 10 11 12 13 14 15 16 8 1 2 3 4 5 6 7 in_lna th7120 cb4 c3 c5 c4 ltx0 cb2 rps gnd sdta sden sclk 4 1 2 3 rs3 rs2 rs1 in_dta gnd 21 out_dta gnd 21 out_dem gnd 21 rssi gnd 21 gnd vcc 12 crx1 lrx1 crx0 ctx0 crx2 ctx3 ltx1 ctx1 ctx2 cb1 l1 c1 c2 cb0 vcc gnd gain_lna vcc 12 3 vcc cb5 cp0 cerres rp cf2 cf1 rf l0 cb6 cs3 cs2 cs1
EVB7120 300 to 930mhz transceiver evaluation board description 390120712002 page 13 of 20 evb description rev. 009 okt/02 p r e l i m i n a r y pcb top view for fsk application board layout data in gerber format is available tx_output rx_input melexis gain_lna rx_in tx_out vcc gnd out_dem out_dta in_dta gnd rssi gnd gnd sdta sden sclk ask / f s k th7120_evb3 cx2 rs1 cerres cp0 cb4 c3 cb0 cb2 ltx0 lrx1 crx1 crx2 ctx2 ctx1 cf2 fs1/ld fs0/ sden t e/sdta r e/ sc lk cb7 rp cb1 c1 c2 l1 ctx0 crx0 0 rps board size is 40mm x 51mm 1 1 1 3 1 rs3 1 gnd 1 1 1 1 1 1 gnd 1 rs2 c5 c4 cx1 cb5 cb3 cf1 rf lt x1 ctx3 cs2 cs3 cs1 lo cb6
EVB7120 300 to 930mhz transceiver evaluation board description 390120712002 page 14 of 20 evb description rev. 009 okt/02 p r e l i m i n a r y board component values for fsk part size value @ 433.92 mhz value @ 868.3 mhz tolerance description c1 0603 5.6 pf nip 5% lna output tank capacitor c2 0603 1 pf 1.5 pf 5% mix input matching capacitor c3 0805 10 nf 10 nf 10% data slicer capacitor c4 0805 330 pf 330 pf 10% demodulator output low-pass capacitor, depending on data rate c5 0805 330 pf 330 pf 10% rssi output low pass capacitor cb0 0805 100 nf 100 nf 10% blocking capacitor cb1 0803 330 pf 330 pf 10% blocking capacitor cb2 0805 330 pf 330 pf 10% blocking capacitor cb4 0805 330 pf 330 pf 10% blocking capacitor cb5 0603 330 pf 330 pf 10% blocking capacitor cb6 0603 330 pf 47 pf 10% blocking capacitor cb7 0603 330 pf 330 pf 10% blocking capacitor cf1 0805 330 pf 330 pf 5% loop filter capacitor cf2 0805 150 pf 150 pf 5% loop filter capacitor cx1 0805 18 pf 22 pf 5% ro capacitor for fsk ( ? f = 20 khz) cx2 0805 150 pf 27 pf 5% ro capacitor for fsk ( ? f = 20 khz) cp0 0805 12 - 12 pf 12 - 12 pf 5% cerres tuning capacitor crx0 0603 100 pf 100 pf 5% rx coupling capacitor crx1 0805 nip nip 5% rx impedance matching capacitor crx2 0805 8.2 pf 3.3 pf 5% rx impedance matching capacitor ctx0 0603 3.3 pf 2.2 pf 5% tx coupling capacitor ctx1 0805 1 pf nip 5% tx impedance matching capacitor ctx2 0805 4.7 pf 4.7 pf 5% tx impedance matching capacitor ctx3 0805 nip 0.47 pf 5% tx impedance matching capacitor cs1 to cs3 0805 22 pf 22 pf 10% protection capacitor rp 0603 10 k ? 10 k ? 5% cerres loading resistor rf 0805 62 k ? 56 k ? 5% loop filter resistor rps 0805 33 k ? 33 k ? 5% power-select resistor only required at fixed-frequency operation rs1 to rs3 0805 10 k ? 10 k ? 10% protection resistor l0 0805 22 nh 2.7 nh 5% vco tank inductor l1 0603 15 nh 10 nh 5% lna output tank inductor lrx1 0805 18 nh 8.2 nh 5% rx impedance matching inductor ltx0 0805 220 nh 82 nh 5% tx impedance matching inductor ltx1 0805 56 nh 12 nh 5% tx impedance matching inductor xtal hc49 smd 7.1505 mhz 7.1505 mhz 30ppm calibr. 30ppm temp. fundamental-mode crystal, c load = 10 pf to 15pf, c 0, max = 7 pf, r m, max = 70 ? cerfil leaded type sfe10.7mfp @ b if2 = 40 khz sfe10.7mfp @ b if2 = 40 khz tbd ceramic filter from murata (optional for narrow band applications) smd type sfecv10.7mjs-a @ b if2 = 150 khz sfecv10.7mjs-a @ b if2 = 150 khz 40 khz ceramic filter from murata cerres smd type cdacv10.7mg18-a cdacv10.7mg18-a ceramic resonator from murata nip ? not in place, may be used optionally
EVB7120 300 to 930mhz transceiver evaluation board description 390120712002 page 15 of 20 evb description rev. 009 okt/02 p r e l i m i n a r y ask application circuit figure 5: circuit for ask operation fs0/sden fs1/ld te/sdta re/sclk ask/fsk xtal cx1 cb7 in_ifa fs0/sden 32 31 30 29 28 27 26 25 cerfil 2 1 3 23 1 23 1 2 3 1 2 1 3 tnk_lo in_dem int2 int1 out_dem rssi out_dta vcc vee ro fsk_sw in_dta ask/fsk vcc re/sclk gain_lna vee in_mix out_mix out_pa out_lna vee vcc vee vee lf fs1/ld 17 18 19 20 21 22 23 24 9 10 11 12 13 14 15 16 8 1 2 3 4 5 6 7 in_lna c3 c5 ltx0 cb2 rps in_dta gnd 21 out_dta gnd 21 21 rssi gnd gnd vcc 12 crx1 lrx1 cb1 l1 c1 c2 gnd gain_lna vcc 12 3 vcc cb5 gnd sdta sden sclk 4 1 2 3 rs3 rs2 rs1 cb0 vcc ctx0 crx2 ctx3 ltx1 ctx1 ctx2 crx0 th7120 cs3 cs2 cs1 cf2 cf1 rf l0 cb6
EVB7120 300 to 930mhz transceiver evaluation board description 390120712002 page 16 of 20 evb description rev. 009 okt/02 p r e l i m i n a r y pcb top view for ask application board layout data in gerber format is available tx_output rx_input melexis gain_lna rx_in tx_out vcc gnd out_dem out_dta in_dta gnd rssi gnd gnd sdta sden sclk ask / f s k th7120_evb3 cx2 rs1 cerres cp0 cb4 c3 cb0 cb2 ltx0 lrx1 crx1 crx2 ctx2 ctx1 cf2 fs1/ld fs0/ sden t e/sdta r e/ sc lk cb7 rp cb1 c1 c2 l1 ctx0 crx0 0 rps board size is 40mm x 51mm 1 1 1 3 1 rs3 1 gnd 1 1 1 1 1 1 gnd 1 rs2 c5 c4 cx1 cb5 cb3 cf1 rf lt x1 ctx3 cs2 cs3 cs1 lo cb6
EVB7120 300 to 930mhz transceiver evaluation board description 390120712002 page 17 of 20 evb description rev. 009 okt/02 p r e l i m i n a r y board component values for ask part size value @ 433.92 mhz value @ 868.3 mhz tolerance description c1 0603 5.6 pf nip 5% lna output tank capacitor c2 0603 1 pf 1.5 pf 5% mix input matching capacitor c3 0805 10 nf 10 nf 10% data slicer capacitor c5 0805 330 pf 330 pf 10% rssi output low pass capacitor cb0 0805 100 nf 100 nf 10% blocking capacitor cb1 0803 330 pf 330 pf 10% blocking capacitor cb2 0805 330 pf 330 pf 10% blocking capacitor cb5 0603 330 pf 330 pf 10% blocking capacitor cb6 0603 330 pf 47 pf 10% blocking capacitor cb7 0603 330 pf 330 pf 10% blocking capacitor cf1 0805 330 pf 330 pf 5% loop filter capacitor cf2 0805 150 pf 150 pf 5% loop filter capacitor cx1 0805 15 pf 15 pf 5% ro capacitor crx0 0603 100 pf 100 pf 5% rx coupling capacitor crx1 0805 nip nip 5% rx impedance matching capacitor crx2 0805 8.2 pf 3.3 pf 5% rx impedance matching capacitor ctx0 0603 3.3 pf 2.2 pf 5% tx coupling capacitor ctx1 0805 1 pf nip 5% tx impedance matching capacitor ctx2 0805 4.7 pf 4.7 pf 5% tx impedance matching capacitor ctx3 0805 nip 0.47 pf 5% tx impedance matching capacitor cs1 to cs3 0805 22 pf 22 pf 10% protection rcapacitor rf 0805 62 k ? 56 k ? 5% loop filter resistor rps 0805 33 k ? 33 k ? 5% power-select resistor only required at fixed-frequency operation rs1 to rs3 0805 10 k ? 10 k ? 10% protection resistor l0 0805 22 nh 2.7 nh 5% vco tank inductor l1 0603 15 nh 10 nh 5% lna output tank inductor lrx1 0805 18 nh 8.2 nh 5% rx impedance matching inductor ltx0 0805 220 nh 82 nh 5% tx impedance matching inductor ltx1 0805 56 nh 12 nh 5% tx impedance matching inductor xtal hc49 smd 7.1505 mhz 7.1505 mhz 30ppm calibr. 30ppm temp. fundamental-mode crystal, c load = 10 pf to 15pf, c 0, max = 7 pf, r m, max = 70 ? cerfil leaded type sfe10.7mfp @ b if2 = 40 khz sfe10.7mfp @ b if2 = 40 khz tbd ceramic filter from murata (optional for narrow band applications) smd type sfecv10.7mjs-a @ b if2 = 150 khz sfecv10.7mjs-a @ b if2 = 150 khz 40 khz ceramic filter from murata nip ? not in place, may be used optionally
EVB7120 300 to 930mhz transceiver evaluation board description 390120712002 page 18 of 20 evb description rev. 009 okt/02 p r e l i m i n a r y tx/rx combining network circuit features ! single tx/rx port ! no tx/rx switch required ! direct connection to /4 antenna possible figure 6: combining network schematic board component values part size value @ 315.0 mhz value @ 433.92 mhz value @ 868.3 mhz value @ 915 mhz ctx0 0603 10 pf 1 pf 2.2 pf 10 pf ctx1 0805 10 pf nip nip nip ctx2 0805 18 pf 15 pf 4.7 pf tbd ctx3 0805 tbd nip 0.68 pf tbd crx0 0603 100 pf 100 pf 100 pf 100 pf crx1 0805 nip 4.7 pf 2.2 pf nip crx2 0805 tbd 22 pf 3.3 pf tbd ltx0 0805 150 nh 150 nh 82 nh tbd ltx1 0805 tbd 56 nh 12 nh tbd lrx1 0805 27 nh 18 nh 8.2 nh tbd lrx2 0805 tbd 15 nh 10 nh tbd nip ? not in place, may be used optionally out_pa in_lna ltx0 ctx0 ctx3 crx1 crx2 lrx1 lrx2 ltx1 crx0 ctx1 ctx2 rf input rf output 26 25 vcc
EVB7120 300 to 930mhz transceiver evaluation board description 390120712002 page 19 of 20 evb description rev. 009 okt/02 p r e l i m i n a r y package dimensions fig. 7: lqfp32 all dimension in mm, coplanarty < 0.1mm e1, d1 a a1 a2 e b l e, d min 0.05 1.35 0.30 0.45 0 7.00 0.8 9.00 max 1.60 0.15 1.45 0.45 0.75 7 all dimension in inch, coplanarty < 0.004? min 0.002 0.053 0.012 0.018 0 0 .27 6 0 . 03 1 0 . 35 4 max 0.630 0.006 0.057 0.018 0.030 7 a1 a2 a b e 1 32 25 17 24 8 9 16 d d1 e1 e l
EVB7120 300 to 930mhz transceiver evaluation board description 390120712002 page 20 of 20 evb description rev. 009 okt/02 p r e l i m i n a r y disclaimer devices sold by melexis are covered by the warranty and patent indemnification provisions appearing in its term of sale. melexis makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. melexis reserves the right to change specifications and prices at any time and without notice. therefore, prior to designing this product into a system, it is necessary to check with melexis for current information. this product is intended for use in normal commercial applications. applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life- support or life-sustaining equipment are specifically not recommended without additional processing by melexis for each application. the information furnished by melexis is believed to be correct and accurate. however, melexis shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interrupt of business or indirect, special incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein. no obligation or liability to recipient or any third party shall arise or flow out of melexis? rendering of technical or other services. ? 2002 melexis nv. all rights reserved. for the latest version of this document. go to our website at www.melexis.com or for additional information contact melexis direct: europe and japan: all other locations: phone: +32 1367 0495 phone: +1 603 223 2362 e-mail: sales_europe@melexis.com e-mail: sales_usa@melexis.com qs9000, vda6.1 and iso14001 certified

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