User Guide

PAMS
Technical Documentation
NHD–4
Schematics/Layouts & Pinouts
Page 5–8
Original 11/97
CDAGCT4 (N100)
1 3 4 6 5 7 8
9
11
12
13
14
15
16
2
17 18 19 20 21 22 23 24
25
26
27
28
29
30
31
32
10
N100
6 DC power for IF LO circuitry
1 180° LO for RF Mixer (Ground with cap)
2 TX_LO 0° LO for RF Mixer
7 180MHz 2*IF Frequency Input (Ground with cap)
8 180MHz 0° 2*IF Frequency Input
9 RFE2 Mode select (Between CDMA and Analog)
3 GROUND (Return for RF Mixer and Power Amp)
5 GROUND (Return for IF LO circuitry)
10 GROUND (Return for IF LO circuitry)
11 GROUND (Return for IF I/Q Modulator)
12 TX_Q_P 0° Baseband ’QUAD PHASE’ input
13 TX_Q_N 180° Baseband ’QUAD PHASE’ input
14 DC Power for Standby circuitry
15 TX_I_P 180° Baseband ’IN PHASE’ Input
16 TX_I_N 0° Baseband ’IN PHASE’ Input
17 DC Power for I/Q Modulator
18 GROUND (Return for I/Q Modulator)
19 GROUND (Return for first CCGA)
21 DC Power for second CCGA
22 GROUND (Return for second CCGA)
23 GROUND (Return for third CCGA)
24 TX_ICT Input control current
25 TX_IREF Input control current reference
26 DC Power for third CCGA
27 GROUND Return for Gain Control circuits
29 DC power for RF mixer
31 180° RF Output
30 Bypass pin for Mixer Bias (Ground with cap)
32 0° RF Output
28 GROUND (Return for RF Mixer and Power Amplifier
20 DC Power for first CCGA and Gain Control Circuitry
LORFN
LORF GND3
PD
GND1
VPS1
LOIFN
LOIF
MODE
GND1
GND4
Q
QN
VPS1S
IN
I
VPS4 GND4 GND2A VPS2A VPS2B GND2B GND2C ICT
IREF
VPS2C
GND2D
GND3
VPS3
BRF
RFNOUT
RFOUT
4 TX_PUNC Control for active/power–down modes