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TRF2020 - SYNTHESIZER

General Description

sizer device.

synthesizers.

Key Features

  • provide maximum flexibility for the design of 900-MHz wireless systems. The main synthesizer consists of a 32/33-modulus prescaler with an 11-bit counter, a phase-frequency detector, and a charge pump. The phase-frequency detector is referenced to an internal reference frequency that is derived from an external TCXO signal. The phase-frequency detector is also provided with a dead-zone compensation circuit that reduces synthesizer phase noise during locked conditions. Each auxiliary synthesize.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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TRF2020 SYNTHESIZER FOR GLOBAL SYSTEM FOR MOBILE (GSM) CELLULAR TELEPHONES SLWS020B – FEBRUARY 1995 – REVISED JANUARY 1998 D Three Separate Loops: 1 UHF and 2 VHF PW PACKAGE D Operation to 1.2-GHz for Main Synthesizer (TOP VIEW) D Operation to 250 MHz for Auxiliary Synthesizers D Fast Lock-up Time D High-Speed Serial Data Bus D Low Power Consumption D Ideal for Global Systems for Mobile VDD CLOCK DATA STROBE LD VSS REF_IN 1 2 3 4 5 6 7 24 AUX1_IN 23 VDDP1 22 PDA1 21 SW1 20 RPA 19 VDDA 18 SWM Communications (GSM) Applications description The Texas Instruments (TI™) TRF2020 is an VSSP PDA2 SW2 VDDP2 AUX2_IN 8 9 10 11 12 17 PDM 16 VSSA 15 RPM 14 VDDPM 13 RF_IN integrated high performance frequency synthe- sizer device. The TRF2020 consists of one main 1.