SA58646 Datasheet, PDF (5/42 Pages) NXP Semiconductors – UHF 900 MHz transceiver IC

NXP Semiconductors
SA58646
UHF 900 MHz transceiver IC
SA58646_1
Product data sheet
Table 2. Pin description …continued
Symbol
Pin
Description
V_CC(PS)
TXPD
12
prescaler supply
13
TX phase detector output
TXLF
14
TX loop filter output
GND(PA)
15
PA ground
PAO
16
PA output
GND(PA)
17
PA ground
MODI
18
summator amplifier input
MODO
19
summator amplifier output
GNDVTX
20
VCO TX ground
VTX
21
VCO TX voltage output
TXLOX
22
VCO TX coil connection x
TXLOY
23
VCO TX coil connection y
V_CC(ATX)
CCAP
24
audio TX supply
25
external capacitor connection for compressor
TXO
26
audio TX output
MICI
27
microphone amplifier input
MICO
28
microphone amplifier output
CMPI
29
compressor input
VB
30
voltage reference capacitor connection
GND(ATX)
31
audio TX ground
XTALI
32
crystal input
XTALO
33
crystal output
CDLBD
34
carrier detector or low battery detector output (out-of-lock synthesizer
RX and/or TX in Test mode)
CLKO
35
clock output
EN
36
serial interface enable input
CLK
37
serial interface clock input
DATA
38
serial interface data input
DATAO
39
data amplifier output
DATAI
40
data amplifier input
GND(ARX)
41
audio RX ground
EARO
42
earpiece amplifier output
EARI
43
earpiece amplifier input
V_CC(ARX)
ECAP
44
audio RX supply
45
external capacitor connection for expander
RXAI
46
audio RX input
LPFD
47
demodulator loop filter
DETO
48
inverting demodulator amplifier output
PLLO
49
demodulator amplifier negative input
LIMI
50
limiter input
GND(IF)
51
IF ground
Rev. 01 — 8 February 2007
© NXP B.V. 2007. All rights reserved.
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