FEATURES
GENERAL DESCRIPTION
The AD6122 is a low power IF transmitter subsystem, specifically designed for CDMA applications. It consists of an I and Q modulator, a divide-by-two quadrature generator, high dynamic range IF amplifiers with voltage-controlled gain and a power-down control input. An integral low dropout regulator allows operation from battery voltages from 2.9 V to 4.2 V.
FEATURES
Fully Compliant with IS98A and PCS Specifications
Linear IF Amplifier
–63 dB to +34 dB
Linear-in-dB Gain Control
Temperature-Compensated Gain Control
Quadrature Modulator
Modulates IFs from 50 MHz to 350 MHz
Integral Low Dropout Regulator
Accepts 2.9 V to 4.2 V Input from Battery
Low Power
10.4 mA at Midgain
<10 μA Sleep Mode Operation
Companion Receiver IF Chip Available (AD6121)
APPLICATIONS
CDMA, W-CDMA, AMPS and TACS Operation
QPSK Transmitters
Analog Devices (NASDAQ: ADI) is a world leader in the design, manufacture, and marketing of a broad portfolio of high performance analog, mixed-signal, and digital signal processing (DSP) integrated circuits (ICs) used in virtually all types of electronic equipment. Since our inception in 1965, we have focused on solving the engineering challenges associated with signal processing in electronic equipment. Used by over 100,000 customers worldwide, our signal processing products play a fundamental role in converting, conditioning, and processing real-world phenomena such as temperature, pressure, sound, light, speed, and motion into electrical signals to be used in a wide array of electronic devices.