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TRF2443IPFPR Datasheet(PDF) 66 Page - Texas Instruments |
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TRF2443IPFPR Datasheet(HTML) 66 Page - Texas Instruments |
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66 / 72 page  APPLICATION SCHEMATIC +3.3V +3.3V +3.3V +3.3V +3.3V +3.3V +3.3V RXAGC XPICAGC RXIN TXOUT (340MHz) REFIN TEMPOUT XPICOUT 50 OHM DIFF 50 OHM DIFF 50 OHM 200 OHM DIFF 50 OHM F=2240MHZ LBW=100KHZ F=2720MHz LBW=100kHz TX MIXER LOAD (340MHz) 50 ohm 39nH 39nH 0.1uF 0.1uF 220pF 82nH 82nH 680pF 220pF 220pF 82nH 82nH 68nH 68nH 220pF 0.1uF 0.1uF 47pF 1nF 82nH 82nH 15pF 15pF 15pF 15pF 220pF 220pF 68nH 68nH 100pF 100pF 15pF 15pF 220pF 220pF 590 ohm 590 ohm 15pF 1000pF 1000pF 1 2 56pF 220pF 220pF 56pF 100pF 100pF 5K ohm 39nH 39nH 1.25K ohm 560pF 0.1uF 0.1uF 220pF 220pF TRF2443 QFP IFOUTN 62 IFOUTP 63 RDBKSPI 64 RXAGC 65 GND 66 RXINP 68 RXINN 69 GNDRX 70 GNDRX 71 CLKSPI 73 DATASPI 74 VCCSPI 75 VCCTX 76 TXOUTP 77 TXOUTN 78 GNDTX 79 TXBBIN 21 TXBBIP 22 GNDXPIC 23 XPICBBCM 24 XPICBBQN 25 XPICBBQP 26 XPICBBIN 27 XPICBBIP 28 VCCXPIC 29 XPICAGC 30 VCCXPIC2 33 XPICINN 34 XPICINP 35 TEMPOUT 37 LDCAP 38 RXBBCM 40 GND 32 GNDRX3 61 VCCRX 67 LESPI 72 GND 31 GNDTX2 80 GND 36 GND 39 1000pF 1000pF 1K ohm 0.1uF 0.1uF 22pF 22pF 82nH 82nH 220pF 100pF 100pF 4K ohm IF Saw Filter TRF2443 SLWS217A – SEPTEMBER 2009 – REVISED SEPTEMBER 2009 ................................................................................................................................... www.ti.com Figure 110. TRF2443 Application Schematic Table 12. Pin Termination Requirements/Limitations NAME PIN DESCRIPTION IFOUTN/IFOUTP 62, 63 IFVGA1 open-collector output terminals. A pullup inductor from each pin to the power supply is required. GND 18 Ground pin shorted to package thermal pad. To be connected to the same ground plane as GNDREFIN (pin 17). IFINP/IFINN 57, 58 IFVGA2 differential input pins internally matched to 50 Ω. LDCAP 38 Lock-detector capacitor pin. The size of capacitor on this pin sets the time constant of the lock-detect circuit. Suggested value for 20-MHz PFD frequency: connect a 1-nF capacitor to ground on this pin (10- µs deglitch time). MIXINDN/ 2, 3 TX IQ modulator open-collector load terminals. A pullup inductor from each pin to the power supply is MIXINDP required. A shunt load resistor is required. PWRDET, 4, 5, 64 TRF2443 digital output pins can sink/source up to 8 mA of current. LOCKDET, RDBKSPI REFIN 16 PLL reference clock input. External ac-coupling capacitor required, as pin is internally dc-coupled. 66 Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated Product Folder Link(s): TRF2443 |
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