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data sheet conexant systems, inc. doc. no. 101251a august 24, 2000 rf250 rx asic for cdma, amps, and pcs applications the rf250 application-specific integrated circuit (asic) is a triple-mode, dual-band receiver (rx) intended for use in code division multiple access (cdma) portable phones in both cellular and personal communications system (pcs) bands. as a dual mode ic, it can be used in cdma mode or advanced mobile phone system (amps) mode. the device incorporates all the components required to implement the receiver front end and the in-phase and quadrature (i/q) demodulator stages except for the filter blocks and pcs low noise amplifier (lna). besides a cellular band lna, there are separate mixers for amps, cdma 800 mhz, and pcs bands. the amps mixer output is single-ended, followed by the amps intermediate frequency (if) surface acoustic wave (saw) filter. the cellular and pcs mixers have balanced outputs for the cdma if saw filters. the mixers are followed by an if variable gain amplifier (vga) and an i/q demodulator. the outputs from the filters are combined through separate buffers at the input of the vga. the buffers are enabled depending on the selected mode. the vga has a gain control range greater than 90 db. there are two vhf oscillators that operate with external tank circuits. they provide signals to the local oscillator (lo) for the i/q demodulator in the cellular and pcs bands. the noise figure, gain, and third order input intercept point (iip3) of each stage in the receiver chip are optimized to meet the system requirements for amps and cdma modes as per tia/eia-98-b and ansi j- std-018 (pcs). employing silicon bipolar technology, the asic is designed for high performance and a high level of integration. the device package and pinout are shown in figure 1. a block diagram of the rf250 is shown in figure 2. features ? supports cdma/amps/pcs1900 modes. ? three battery cell operation (2.7 v < vcc < 3.6 v). ? higher level of integration. ? i/q outputs. ? on-chip 100 to 640 mhz oscillators. ? low power operation: <60 ma. ? 48-pin thin quad flat pack (tqfp) package with downset paddle. applications ? tri-mode handsets. ? cdma and amps modes in the cellular band: -amps - cdma-us - cdma-j ? cdma mode in the pcs band: - us-pcs -k-pcs 1 48 47 46 45 44 43 42 41 40 39 38 37 13 14 15 16 17 18 19 20 21 22 23 24 2 3 4 5 6 7 8 9 10 11 12 36 35 34 33 32 31 30 29 28 27 26 25 c452 gnd cell_lna_decouple nc cell_lna_in vcc1 cell_bias_set cell/pcs fm/cdma vcc2 gnd cell_tank- cell_tank+ pcs_tank- pcs_tank+ div2/div4 pll+ pll- gnd i- i+ q+ q- sleep vga_control cell_lna_out gnd pcs_bias_set nc cell_mix_gnd cell_iftrap cell_mix_in vcc4 pcs_mix_in cell_lo pcs_lo pcs_mix_bypass pcs_if_out+ pcs_if_out- amps_if_out cdma_if_out+ cdma_if_out- cell_mix_bypass vga_pcs_in+ vga_pcs_in- vga_amps_in vga_cdma_in+ vga_cdma_in- vcc3 figure 1. rf250 rx asic pinout ? 48-pin tqfp package with downset paddle
rx asic rf250 2 conexant systems, inc. 101251a august 24, 2000 technical description low noise amplifier (lna) . the cellular band lna is designed with a low noise figure and high linearity to achieve maximum receiver dynamic range. pin 2, the 800 lna decouple pin, is required to be grounded through an rf bypass capacitor with minimum trace length. the input and output match are external to the chip. mixers . the rf250 rx asic has three independent mixers, one for the pcs band and two for the cellular band (amps and cdma). the mixers are designed to operate with very low lo powers of ?10 dbm. the lo ports are matched internal to the chip. the cellular band mixers have a high gain and a low noise figure that allow them to meet the system noise figure. the cellular cdma and pcs mixers have balanced output to drive the if filters. the amps mixer has a single-ended output to match the standard if saw filters. variable gain amplifier (vga) . the high dynamic range required by cdma handsets is achieved by the vga, which is common to all modes. the vga has a minimum dynamic range of 90 db with a control voltage of 0.2 to 2.7 volts. the appropriate signal path is switched internal to the device. this eliminates off-chip switching needed to operate this common vga in cellular amps, cdma, and pcs modes. i/q demodulator . the local oscillator signals are generated on-chip. the i/q demodulator is internally connected to the vga output. it is designed to have a very low amplitude and phase imbalance. the i and q outputs are differential. the dc offsets between the differential outputs and between i and q channels are designed to be extremely low to facilitate compatibility with baseband interfaces. vhf oscillators . there are two on-chip oscillators, one for the cellular and one for the pcs bands. these voltage controlled oscillators (vcos) work with external tank circuits and varactor diodes. the outputs of the differential oscillators are buffered and the output is used to drive the prescaler of an external phase locked loop (pll). the vcos typically operate at twice the if frequency and can operate at up to four times the if frequency. figure 2. rf250 rx asic block diagram 2,4 amps if saw cdma if saw i q rf250 rx asic rf saw(cell) rf saw (pcs) if saw (pcs) pll cell_lna_in pcs_lna_in 4 7 48 42 34 28 32, 33 26, 27 11,12 19 20 21 22 c262 16,17 13,14 40 35,36 29,30 pcs_lo cell_lo vga_control 22 2 2 2 2 38 39 24 cell/pcs fm/cdma 8 sleep 23
rf250 rx asic 101251a conexant systems, inc. 3 august 24, 2000 the local oscillators for the i/q demodulators are derived by an on-chip frequency divider. the logic signal to select the divider ratio (2 or 4) is available onpin15(div2/div4). mode control . the operation of the chip is controlled by signals at pin 7 (cell/pcs), pin 8 (fm/cdma), pin 23 (sleep), and the div2/div4 select commands at pin 15. all the switching is done internally. the supply voltage should be present at all the vcc pins for normal operation. the internal switching needed to select each of these signals is shown in table 1. electrical and mechanical specifications. included in this document are tables 1 through 5 and figures 1 through 29, which define the electrical and mechanical specifications of the rf250. table 1: mode control select signal switching table 2: pin assignments and functional pin descriptions table 3: absolute maximum ratings table 4: recommended operating conditions table 5: electrical specifications figure 1: pinout configuration figure 2: functional block diagram figures 3 - 27: typical functional block performances figure 28: package dimensions figure 29: tape and reel dimensions esd sensitivity the rf250 is a class 1 device. the following extreme electrostatic discharge (esd) precautions are required according to the human body model (hbm): ? protective outer garments. ? handle device in esd safeguarded work area. ? transport device in esd shielded containers. ? monitor and test all esd protection equipment. the hbm esd withstand threshold value, with respect to ground, is 1.5kv.thehbmesd withstand threshold value, with respect to vdd (the positive power supply terminal) is also 1.5 kv. table 1. mode control select signal switching pin amps cdma pcs 7 (cell/pcs) 0 0 1 8 (fm/cdma) 0 1 x 15 (div2/div4) 0 0 0 23 (sleep) 1 1 1 key: 0 = low 1=high x=n/a
rx asic rf250 4 conexant systems, inc. 101251a august 24, 2000 table 2. rf250 signal description (1 of 2) pin # name description 1 g nd ground 2 cell_lna_decouple an rf bypass capacitor with very short trace should be connected to this pin. 3 nc no connection 4 cell_lna_in the input to lna needs external matching. the matching network should be placed as close to this pin as possible. high q components are recommended to minimize the effect on the noise figure. 5 vcc1 supply voltage to the rf bias. an rf bypass capacitor should be connected from the pin to ground with short traces.. 6 cell_bias_set this pin sets the cellular rf bias current. typically, a 180 ? resistor is connected from the pin to ground. 7 cell/pcs band select: 0 = cellular (800 mhz); 1 = pcs (1900 mhz). 8 fm/cdma cellular band mode select: 0 = amps; 1 = cdma. 9 vcc2 voltage supply pin to the vco buffer. a bypass capacitor should be placed close to the device from pin 9 to pin 10. the trace should be short and connected immediately to the ground plane for best performance. 10 gnd ground return from the vco buffer. 11 cell_tank? differential tank connection for the cellular band vco. care should be taken during the layout of the external tank circuit to prevent parasitic oscillations. 12 cell_tank+ differential tank connection for the cellular band vco. care should be taken during the layout of the external tank circuit to prevent parasitic oscillations. 13 pcs_tank? differential tank connection for the pcs band vco. care should be taken during the layout of the external tank circuit to prevent parasitic oscillations. 14 pcs_tank+ differential tank connection for the pcs band vco. care should be taken during the layout of the external tank circuit to prevent parasitic oscillations. 15 div2/div4 selects the divide ratio of the vco to the lo port of the i/q demodulator: 0 = divide by 2, 1 = divide by 4. 16 pll+ differential buffered vco output. 17 pll? differential buffered vco output. 18 gnd ground 19 i? i channel differential output. 20 i+ i channel differential output. 21 q+ q channel differential output. 22 q? q channel differential output. 23 sleep activates sleep mode: 0 = sleep; 1 = enable 24 vga_control vga voltage input. input impedance is greater than 50k ? . 25 vcc3 voltage supply to vga and i/q demodulator stages. supply should be well regulated and bypassed to prevent modulation of the signal by the supply ripple. 26 vga_cdma_in? cdma differential vga input 27 vga_cdma_in+ cdma differential vga input 28 vga_amps_in amps vga input.
rf250 rx asic 101251a conexant systems, inc. 5 august 24, 2000 table 2. rf250 signal description (2 of 2) pin # name description 29 vga_pcs_in? p cs differential vga input. 30 vga_pcs_in+ pcs differential vga input. 31 cell_mix_bypass low frequency bypass for the amps mixer. 32 cdma_if_out? cdma differential mixer output. requires an external inductor to vcc. output impedance is set by an external match. 33 cdma_if_out+ cdma differential mixer output. requires an external inductor to vcc. output impedance is set by an external match. 34 amps_if_out amps mixer output. requires an external inductor to vcc. output impedance is set by an external match. 35 pcs_if_out? pcs differential mixer output. requires an external inductor to vcc. output impedance is set by an external match. 36 pcs_if_out+ pcs differential mixer output. requires an external inductor to vcc. output impedance is set by an external match. 37 pcs_mix_bypass low frequency bypass for the pcs mixer. 38 pcs_lo the local oscillator input for the pcs band. 39 cell_lo the local oscillator input for the cellular band. 40 pcs_mix_in pcs mixer input. 41 vcc4 voltage supply pin for the mixers. an rf bypass capacitor should be connected from this pin to ground. it should be connected as close to the device as possible with very short trace lengths. 42 cell_mix_in cellular mixer input. 43 cell_iftrap the parallel lc circuit is tuned to the cellular if frequency. 44 cell_mix_gnd add inductance from the pin to ground to lower mixer gain and increase iip3. 45 nc no connection 46 pcs_bias_set this pin sets the pcs rf bias current. typically, a 180 ? resistor is connected from the pin to ground. 47 gnd ground 48 cell_lna_out cellular band lna output. this is an open collector output. an inductor must be connected to vcc. the matching is done externally to the chip.
rx asic rf250 6 conexant systems, inc. 101251a august 24, 2000 table 3. absolute maximum ratings parameter minimum maximum units supply voltage (vcc) ?0.3 +5.5 v input voltage range ?0.3 vcc v lna input power -- +5 dbm power dissipation -- 600 mw ambient operating temperature ?30 +80 c storage temperature ?40 +125 c parameter min typical max units supply voltage (vcc) 2 .7 3 .3 3 .6 v operating temperature ?30 +25 +80 c impedance of logic inputs 50 k ? logic 0 0.0 0.5 v logic 1 vcc ? 0.5 vcc v table 4. recommended operating conditions
rf250 rx asic 101251a conexant systems, inc. 7 august 24, 2000 table 5. rf250 rx asic electrical specifications (1 of 3) ta = 25 c, vcc = 3.3 v, plo = ?10 dbm parameter symbol test condition min typical max units cellular lna gain @ 881 mhz 13 db gain variation over band (869-894 mhz) 0.5 db gain variation over temperature 1.5 db noise figure @ 881 mhz 2.0 db reverse isolation 20 db p1db @ input ?5 dbm ip3 @ input 8dbm input return loss (869-894 mhz) ?12 db output return loss (869-894 mhz) ?15 db total supply current (adjustable) 12 ma cellular mixer conversion gain (power): cdma mode amps mode 14 11 db db single-sideband noise figure: cdma mode amps mode 7.5 8 db db p1db @ input: cdma mode amps mode ?6 ?9 dbm dbm ip3 @ input: cdma mode amps mode 5 3 dbm dbm mixer rf input return loss, rf port 1 (869-894 mhz) ?15 db lo input power level ?10 dbm if output resistance: cdma mode (differential) amps mode (single-ended) 3000 1000 ? ? if frequency range 300 mhz lo/rf input isolation 20 db total supply current 18 ma
rx asic rf250 8 conexant systems, inc. 101251a august 24, 2000 table 5. rf250 rx asic electrical specifications (2 of 3) ta = 25 c, vcc = 3.3 v, plo = ?10 dbm parameter symbol test condition min typical max units pcs mixer conversion gain (power) 10 db single-sideband noise figure 12 db p1db @ input ?5 dbm ip3 @ input 5dbm rf input return loss (1930-1990 mhz) ?15 db lo input power level ?10 dbm if output resistance (differential) 1000 ? if frequency range 300 mhz lo/lna input isolation 25 db lo/rf input isolation 20 db total supply current (adjustable) 24 ma rx vga - i/q demodulator frequency range 50 300 mhz input impedance: cdma input (differential) pcs input (differential) amps input (single-ended) 1000 1000 1000 ? ? ? gain: maximum minimum maximum (amps) minimum (amps) 53 ?47 61 ?39 54 ?42 62 ?34 55 ?37 63 ?29 db db db db gain slope 45 db/v gain slope linearity (over any 6 db segment) ?3 +3 db if amplifier iip3: @ maximum gain (cdma and pcs mode) @ maximum gain (amps mode) ?50 ?58 dbm input 1 db compression @ minimum gain ?10 dbm if amplifier noise figure: @ maximum gain minimum gain 5 50 db db
rf250 rx asic 101251a conexant systems, inc. 9 august 24, 2000 parameter symbol test condition min typical max units rx vga - i/q demodulator (continued) output level: cdma amps 2.75 5.5 mvrms mvrms maximum output level 1.4 vp-p gain variation over frequency: cdma (1-630 khz) amps (0.1-12.2 khz) 0.1 0.1 0.3 0.3 db db output impedance (differential) 500 i+, i?, and q+, q? dc offset 6mvrms i/q gain mismatch 0.2 0.3 db i/q phase mismatch 2 4 deg i to q dc offset 30 mv total supply current (includes i/q mixers, lo buffers, and dividers) 15 ma oscillator frequency range 100 640 mhz phase noise (fc = 200 mhz, unloaded q = 20) @ 100 khz offset ?117 dbc/hz second harmonic distortion (application dependent) ?30 ?26 dbc output level to pll (differential) 300 mvp-p output impedance to pll (differential) 300 ? reverse isolation ?30 ?40 db total supply current 5ma table 5. rf250 rx asic electrical specifications (3 of 3) ta = 25 c, vcc = 3.3 v, plo = ?10 dbm
rx asic rf250 10 conexant systems, inc. 101251a august 24, 2000 0 2 4 6 8 10 12 14 16 2.42.62.8 3 3.23.43.63.8 vcc (v) gain (db) -30 deg c 25 deg c 80 deg c figure 3. lna gain over temperature at 881.52 mhz 0 0.5 1 1.5 2 2.5 3 2.4 2.6 2.8 3 3.2 3.4 3.6 3.8 vcc (v) noise figure (db) -30 deg c 25 deg c 80 deg c figure 4. lna noise figure at 881.52 mhz 0 2 4 6 8 10 12 2.4 2.6 2.8 3 3.2 3.4 3.6 3.8 vcc (v) iip3 (dbm) -30 deg c 25 deg c 80 deg c figure 5. lna iip3 at 881.52 mhz 0 2 4 6 8 10 12 14 2.4 2.6 2.8 3 3.2 3.4 3.6 3.8 vcc (v) gain (db) -30 deg c 25 deg c 80 deg c figure 6. amps mixer gain (rf frequency = 881.52 mhz, lo frequency = 966.90 mhz, if frequency = 85.38 mhz) 0 1 2 3 4 5 6 7 8 9 10 2.4 2.6 2.8 3 3.2 3.4 3.6 3.8 vcc (v) noisefigure(db) -30 deg c 25 deg c 80 deg c -10 -8 -6 -4 -2 0 2 4 6 8 10 2.4 2.6 2.8 3 3.2 3.4 3.6 3.8 vcc (v) iip3 (dbm) -30 deg c 25 deg c 80 deg c figure 7. amps mixer noise figure (rf frequency = 881.52 mhz, lo frequency = 966.90 mhz, if frequency = 85.38 mhz) figure 8. iip3 of amps mixer (rf frequency = 881.52 mhz, lo frequency = 966.90 mhz, if frequency = 85.38 mhz)
rf250 rx asic 101251a conexant systems, inc. 11 august 24, 2000 0 2 4 6 8 10 12 14 16 18 2.42.62.8 3 3.23.43.63.8 vcc (v) gain (db) -30 deg c 25 deg c 80 deg c figure 9. cdma mixer gain (rf frequency = 881.52 mhz, lo frequency = 966.90 mhz, if frequency = 85.38 mhz) 0 1 2 3 4 5 6 7 8 9 10 2.4 2.6 2.8 3 3.2 3.4 3.6 3.8 vcc (v) noise figure (db) -30 deg c 25 deg c 80 deg c figure 10. cdma mixer noise figure (rf frequency = 881.52 mhz, lo frequency = 966.90 mhz, if frequency = 85.38 mhz) -10 -8 -6 -4 -2 0 2 4 6 8 10 2.4 2.6 2.8 3 3.2 3.4 3.6 3.8 vcc (v) iip3 (dbm ) -30 deg c 25 deg c 80 deg c figure 11. cdma mixer iip3 (rf frequency = 881.52 mhz, lo frequency = 966.90 mhz, if frequency = 85.38 mhz) 0 2 4 6 8 10 12 14 2.4 2.6 2.8 3 3.2 3.4 3.6 3.8 vcc (v) gain (db) -30 deg c 25 deg c 80 deg c figure 12. pcs mixer conversion gain (rf frequency = 1960 mhz, lo frequency = 1749.62 mhz, if frequency = 210.38 mhz) 0 2 4 6 8 10 12 14 16 2.4 2.6 2.8 3 3.2 3.4 3.6 3.8 vcc (v) noisefigure(db) -30 deg c 25 deg c 80 deg c figure 13. pcs mixer noise figure (rf frequency = 1960 mhz, lo frequency = 1749.62 mhz, if frequency = 210.38 mhz) 0 1 2 3 4 5 6 7 2.4 2.6 2.8 3 3.2 3.4 3.6 3.8 vcc (v) iip3 (dbm ) -30 deg c 25 deg c 80 deg c figure 14. pcs mixer iip3 (rf frequency = 1960 mhz, lo frequency = 1749.62 mhz, if frequency = 210.38 mhz)
rx asic rf250 12 conexant systems, inc. 101251a august 24, 2000 0 10 20 30 40 50 60 70 2.4 2.6 2.8 3 3.2 3.4 3.6 3.8 vcc (v) max gain (db) -30 deg c 25 deg c 80 deg c figure 15. vga + i/q gain in amps mode (vcontrol = 2.7 v, frequency = 85.38 mhz) 0 1 2 3 4 5 6 7 2.42.62.8 3 3.23.43.63.8 vcc (v) noisefigureatmaxgain(db) -30 deg c 25 deg c 80 deg c figure 16. vga noise figure in amps mode (vcontrol = 2.7 v, frequency = 85.38 mhz) -70 -60 -50 -40 -30 -20 -10 0 2.4 2.6 2.8 3 3.2 3.4 3.6 3.8 vcc (v) iip3 (dbm) -30 deg c 25 deg c 80 deg c figure 17. vga + i/q iip3 at maximum gain in amps mode 0 10 20 30 40 50 60 2.4 2.6 2.8 3 3.2 3.4 3.6 3.8 vcc (v) ma x ga in (d b) -30 deg c 25 deg c 80 deg c figure 18. vga + i/q gain in cellular cdma mode (vcontrol = 2.7 v, frequency = 85.38 mhz) 0 1 2 3 4 5 6 2.4 2.6 2.8 3 3.2 3.4 3.6 3.8 vcc (v) noisefigureatmaxgain(db) -30 deg c 25 deg c 80 deg c figure 19. vga noise figure in cellular cdma mode (vcontrol = 2.7 v, frequency = 85.38 mhz) -70 -60 -50 -40 -30 -20 -10 0 2.4 2.6 2.8 3 3.2 3.4 3.6 3.8 vcc (v) iip3 (dbm) -30 deg c 25 deg c 80 deg c figure 20. vga + i/q iip3 at maximum gain in cdma mode
rf250 rx asic 101251a conexant systems, inc. 13 august 24, 2000 figure 21. vga + i/q gain in pcs mode (vcontrol = 2.7 v, frequency = 210.38 mhz) 0 1 2 3 4 5 6 2.4 2.6 2.8 3 3.2 3.4 3.6 3.8 vcc (v) noise figure at max gain (db) -30 deg c 25 deg c 80 deg c figure 22. vga noise figure in pcs mode (vcontrol = 2.7 v, frequency = 210.38 mhz) figure 23. vga + i/q iip3 at maximum gain in pcs mode -60 -40 -20 0 20 40 60 80 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 2.2 2.4 vcontrol (v) gain (db) -30 deg c 25 deg c 80 deg c figure 24. vga + i/q gain over temperature (frequency = 85.38 mhz) -60 -40 -20 0 20 40 60 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 2.2 2.4 2.6 vco n tro l (v) gain (db) 2.7 v 3.0 v 3.3 v 3.6 v figure 25. vga + i/q gain vs. control voltage in cellular mode (frequency = 85.38 mhz) 0 10 20 30 40 50 60 70 2.4 2.6 2.8 3 3.2 3.4 3.6 3.8 vcc (v) current (ma) -30 deg c 25 deg c 80 deg c figure 26. supply current in the cellular band 0 10 20 30 40 50 60 2.4 2.6 2.8 3 3.2 3.4 3.6 3.8 vcc (v) ma x ga i n (d b) -30 deg c 25 deg c 80 deg c -70 -60 -50 -40 -30 -20 -10 0 2.4 2.6 2.8 3 3.2 3.4 3.6 3.8 vcc (v) iip3 (dbm ) -30 deg c 25 deg c 80 deg c
rx asic rf250 14 conexant systems, inc. 101251a august 24, 2000 detail a a1 l1 c l a a2 millimeters 0.05 8.85 0.5 0.11 1.6 max 0.15 9.15 5.5 ref 0.75 1.0 ref 0.500 ref 0.17 0.10 max 0.0020 0.3484 0.0197 0.0043 a a1 a2 d d1 d2 l l1 e b c coplanarity min. max. min. max. inches* dim. ref: 48-pin etqfp (gp00-d283) ** 0.0630 max 0.0059 0.3602 0.2165 ref 0.0295 0.0394 ref 0.0197 ref 0.0067 0.0039 max * metric values (millimeters) should be used for pcb layout. english values (inches) are converted from metric values and may contain round-off errors. ** the package has a downset paddle to provide good rf ground contact and needs to be soldered to the ground plane on the pcb. d1 detail a e b c085 d2 d1 d downset paddle centrally located below the etqfp package (shown for reference) dimensional sketch of the ground pattern for the downset paddle note: package conforms to jedec standard mo-136 d2 d1 d 1.35 1.45 0.0528 0.0571 0.2736 0.2776 6.95 7.05 0.220 ref 0.0087 ref 180 mils 10 mil micro-vias hole figure 28. rf250 rx asic package dimensions - 48-pin tqfp package with downset paddle
rf250 rx asic 101251a conexant systems, inc. 15 august 24, 2000 section a-a section b-b a b b a 1.75.10 [0.069.004] 8 ? max. 5 ? max. 1.50.25 [0.06.010] 2.000.10 [0.079.004] 4.000.10 [0.157.004] 12.000.10 [0.472.004] 16.00+.30/-.10 [0.630+.012/-.004] 7.500.10 [0.295.004] .730.013 [0.0287.0005] 7.26.10 [0.285.004] 9.45.10 [0.372.004] 7.09.10 [0.279.004] 9.55.10 [0.375.004] 2.43.10 [0.096.004] 1.50.10 [0.06.004] note: 1. carrier tape: carbon filled polycarbonate. 2. tape reel size: 13 inches. 3. all dimensions are in millimeters. dimensions enclosed in [ ] are in inches and are for reference only. c604 figure 29. 48-pin tqfp tape and reel dimensions
rx asic rf250 16 conexant systems, inc. 101251a august 24, 2000 ordering information information provided by conexant systems, inc. conexant is believed to be accurate and reliable. however, no responsibility is assumed by conexant f or its use, nor any infringement of patents or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any p atent rights of conexant other than for circuitry embodied in conexant products. conexant reserves the right to change circuitry at any time without notice. this doc ument is subject to change without notice. conexant products are not designed or intended for use in life support appliances, devices, or systems where malfunction of a c onexant product can reasonably be expected to result in personal injury or death. conexant customers using or selling conexant products for use in such applications do so at their own ri sk and agree to fully indemnify conexant for any damages resulting from such improper use or sale. conexant and ?what?s next in communications technologies? are trademarks of conexant systems, inc. product names or services listed in this publication are for identification purposes only, and may be trademarks or registered trademarks of their re spective companies. all other marks mentioned herein are the property of their respective holders. ?1999, 2000 conexant systems, inc. all rights reserved model name manufacturing part number product revision rx asic RF250-32
further information: literature@conexant.com 1-800-854-8099 (north america) 33-14-906-3980 (international) web site www.conexant.com world headquarters conexant systems, inc. 4311 jamboree road, p.o. box c newport beach, ca 92658-8902 phone: (949) 483-4600 fax: (949) 483-6375 u.s. florida/south america phone: (727) 799-8406 fax: (727) 799-8306 u.s. los angeles phone: (805) 376-0559 fax: (805) 376-8180 u.s. mid-atlantic phone: (215) 244-6784 fax: (215) 244-9292 u.s. north central phone: (630) 773-3454 fax: (630) 773-3907 u.s. northeast phone: (978) 692-7660 fax: (978) 692-8185 u.s. northwest/pacific west phone: (408) 249-9696 fax: (408) 249-7113 u.s. south central phone: (972) 733-0723 fax: (972) 407-0639 u.s. southeast phone: (919) 858-9110 fax: (919) 858-8669 u.s. southwest phone: (949) 483-9119 fax: (949) 483-9090 apac headquarters conexant systems singapore, pte. ltd. 1 kim seng promenade great world city #09-01 east tower singapore 237994 phone: (65) 737 7355 fax: (65) 737 9077 australia phone: (61 2) 9869 4088 fax: (61 2) 9869 4077 china phone: (86 2) 6361 2515 fax: (86 2) 6361 2516 hong kong phone: (852) 2 827 0181 fax: (852) 2 827 6488 india phone: (91 11) 692 4780 fax: (91 11) 692 4712 korea - seoul office phone: (82 2) 565 2880 fax: (82 2) 565 1440 korea - taegu office phone: (82 53) 745-2880 fax: (82 53) 745-1440 europe headquarters conexant systems france les taissounieres b1 1681 route des dolines bp 283 06905 sophia antipolis cedex france phone: (334)93003335 fax: (334)93003303 europe central phone: (49 89) 829 1320 fax: (49 89) 834 2734 europe mediterranean phone: (39 02) 9317 9911 fax (39 02) 9317 9913 europe north phone: (44 1344) 486 444 fax: (44 1344) 486 555 europe south phone: (331)41443650 fax: (331)41443690 middle east headquarters conexant systems commercial (israel) ltd. p.o. box 12660 herzlia 46733 israel phone: (972 9) 952 4064 fax: (972 9) 951 3924 japan headquarters conexant systems japan co., ltd. shimomoto building 1-46-3 hatsudai, shibuya-ku tokyo, 151-0061 japan phone: (81 3) 5371 1567 fax: (81 3) 5371 1501 taiwan headquarters conexant systems, taiwan co., ltd. room 2808 international trade building 333 keelung road, section 1 taipei 110 taiwan, roc phone: (886 2) 2720 0282 fax: (886 2) 2757 6760

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