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TRF3040 - MODULATOR/SYNTHESIZER

Description

The TRF3040 is an integrated transmit modulator/synthesizer circuit suitable for 900-MHz analog and digital cellular telephones.

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D 2-GHz Main Synthesizer, Which Incorporates a Dual-Mode 32/33 and 64/65 Prescaler for Fractional-N Operation D 200-MHz Auxiliary Synthesizer, Which Incorporates an 8/9 Prescaler D Separate Supply Terminals for Main and Auxiliary Charge Pumps D Internal Compensation for Fractional Spurs D Low Phase Noise D Normal and Integral Charge Pump Outputs D Fully Programmable Main and Auxiliary Dividers D Serial Data Interface TRF3040 MODULATOR/SYNTHESIZER SLWS057 – AUGUST 1999 D Direct I/Q Modulator D Control Logic for Power-Down Modes D Single-Sideband Suppressed Carrier (SSBSC) Converter to Generate TX Carrier D 200-MHz TXIF Synthesizer and Oscillator D Variable Gain Amplifier (VGA) With 50 dB of Dynamic Range D 900-MHz Power Amplifier (PA) Driver With 9 dBm Typical Output Power D Reference and
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