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