Rev. 4665D–SIGE–08/04
65 - 300 MHz
SiGe IF
Receiver/
Demodulator
ATR0797
Features
Gain Control in 20-dB Steps
Very Low I/Q Amplitude and Phase Errors
High Input P1dB
Small and Optimized Package for High Reliability and Performance
Applications
Infrastructure Digital Communication Systems
GSM/Cellular Transceivers
ISM Band Transceivers
Benefits
Fully Integrated Device with Reduced External Component Count
Electrostatic sensitive device.
Observe precautions for handling.
Description
The ATR0797 is a multi-purpose demodulator RFIC. The silicon monolithic integrated
circuit is designed with Atmel’s advanced SiGe technology. This demodulator is capa-
ble of both quadrature demodulation or direct IF output. Features include switchable
gain control on a frequency range from 65 MHz to 300 MHz. The device performs a
very low amplitude as well as phase error and allows high input P1dB. The ATR0797
targets a variety of system applications for communications including 3G wireless.
Figure 1. Block Diagram
ϕ
IFP
IFN
GC1 GC2
BBIP
BBIN
BBQP
BBQN
LO
P
LO
N
1
2
16
15
1213
45
8
9