Product Description
The RF2480 is a monolithic integrated quadrature modulator IC capable of universal direct modulation for high-frequency AM, PM, or compound carriers. This low-cost IC features excellent linearity, noise floor, and over-temperature carrier suppression performance. The device implements differential amplifiers for the modulation inputs, 90° carrier phase shift network, carrier limiting amplifiers, two matched double-balanced mixers, summing amplifier, and an output RF amplifier which will drive 50 from 800MHz to 2500MHz. Component matching is used to obtain excellent amplitude balance and phase accuracy.

Features
■ Typical Carrier
   Suppression>35dBc over
   temperature with highly linear
   operation
■ Single 5V Power Supply
■ Integrated RF quadrature network
■ Digitally controlled Power Down mode
■ 800MHz to 2500MHz operation

Applications
■ Dual-Band CDMA Base Stations
■ TDMA/TDMA-EDGE Base Stations
■ GSM-EDGE/EGSM Base Stations
■ W-CDMA Base Stations
■ WLAN and WLL Systems
■ TETRA Systems