Product Description
The RF2422 is a monolithic integrated quadrature modulator IC capable of universal direct modulation for high-frequency AM, PM, or compound carriers. This low-cost IC 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, which can only be accomplished with monolithic construction, is used to full advantage to obtain excellent amplitude balance and phase accuracy.

FEATUREs
■ Single 5V Power Supply
■ Integrated RF Quadrature Network
■ No Tuning Required
■ Low LO Input Level
■ Digitally Controlled Power Down Mode
■ 800MHz to 2500MHz Operation

APPLICATIONs
■ Digital Communications Systems
■ Spread-Spectrum Communication Systems
■ GMSK,QPSK,DQPSK,QAM Modulation
■ GSM, DCS 1800, JDC, DAMPS Systems
■ Commercial and Consumer Systems