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