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Description

The W3000 is a high-performance UHF RF PLL synthesizer, designed for use in digital wireless communication applications. Particular emphasis in the design has been placed on dual-band applications, with near-seamless switching between operational bands without the need for external loop-filter circuitry other than that required for single band applications. In combination with a suitable reference crystal, UHF VCO, and associated loop-filter components, the W3000 offers a very low-noise oscillator solution.

Features

■ 2.2 GHz operational

■ Dual-band optimized

■ Low supply current (5.1 mA)

■ Surface-mount 14-pin TSSOP package

■ Scaled PD gain for dual-band operation

■ Programmable phase-detector polarity

■ Synchronous or forced counter update loading

■ Powerdown mode via external pin or serial bus

■ Low-load capacitance on reference input buffer

Applications

■ GSM900/1800/1900

■ North American IS-136/137

■ Personal Digital Cellular (Japan RCR-27)

■ Personal Handy Phone (Japan RCR-28)

■ CDMA (IS-95)