ICS31202

Integrated Circuit Systems, Inc. ICS31202 Preliminary Product Preview Dual Frequency Synthesizer General Description The ICS31202 is an integrated Dual Frequency Synthesizer designed for RF Personal Communication systems requiring two independent frequencies. It is one of the lowest cost and smallest size solutions for 900MHz applications. The ICS31202 contains two dual modulus prescalers. A 32/ 33 prescaler can be selected for each RF synthesizer . A common reference divider chain is included for required frequency resolution. Combined with a high quality reference oscillator and loop filter , the ICS31202 provides the tuning voltages for the external VCO's to generate very stable, low noise RF Local Oscillator signals. Serial data is transferred using a three wire interface. ICS31202 allows synchronous loading of counters via data line. Crystal inputs are in parallel mode. The ICS31202 is fabricated using state-of-the art CMOS process. It is available in a 16-pin 4.4mm TSSOP package with 0.65mm pitch. The ICS31202 is a direct replacement for Toshiba TB31202. Features • • • • • • • • • • • • Smallest Size Dual RF Sythesizer in the market. Integrated Dual PLL with prescalers Dual Modulus Prescaler: 32/33 Provides excellent isolation between Tx, Rx signals. Input frequency range of 200-600 MHz 2.7V to 4.5V operation Software controlled Power Down Mode Selectable charge pump current levels (100 to 800 µA) Current consumption, 3mA per channel @ 2.7V/500MHz Synchronous loading...