W3030 Datasheet, PDF (1/22 Pages) Agere Systems – W3030 3 V Dual-Mode IF Cellular Receiver

Data Sheet
April 1999
W3030 3 V Dual-Mode IF Cellular Receiver
Features
n Proven double conversion architecture:
 First IF capability: 10 MHz to over 1000
MHz
 Second IF capability: 0.2 MHz to 2.0 MHz
n Dual second IF amplifiers and demodulators:
 Analog-mode limiting amplifier and FM
quadrature detector
 Digital-mode linear AGC amplifiers with
dual-mixer I & Q quadrature demodulator
n Accurate, onboard local oscillator phase splitter
for digital quadrature demodulator
n Four enable/powerdown modes, selectable from
two digital control pins, allow operation with
minimal supply current
n Low supply current
n Analog received signal strength indicator (RSSI)
available
n Analog AGC for digital-mode IF amplifiers
n Over 100 dB combined voltage gain
Applications
n IS-136 (North American dual-mode) cellular
radio portable and mobile terminals
n Cellular radio base stations
n Digital satellite communications
n Multisymbol signaling receivers
VCC
GND
ENBA
ENBD
VCM
AGC
LOGIC AND
BIAS
CONTROL
IF INPUT
LO
DIGITAL SECTION
VARIABLE GAIN
ANALOG SECTION
I
÷4
CLK
Q
AUDIO
RSSI
Figure 1. General Block Diagram