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SA9024 - 900 MHz transmit modulator and 1.3 GHz fractional-N synthesizer

Description

This specification defines the requirements for a transmitter modulator and fractional N synthesizer IC to be used in cellular telephones which employ the North American Dual Mode Cellular System (IS

136).

Reference and clock buffers Control logic for programming

Features

  • Low current from 3.75V supply.
  • Low phase noise.
  • Main loop with internal charge pump and fractional compensation.
  • 3.
  • line serial interface bus.
  • Power down for the synthesizers.
  • Speedup mode for faster switching.

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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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INTEGRATED CIRCUITS SA9024 900 MHz transmit modulator and 1.3 GHz fractional–N synthesizer Objective specification 1997 Aug 01 Philips Semiconductors Philips Semiconductors Objective specification 900 MHz transmit modulator and 1.3 GHz fractional–N synthesizer SA9024 DESCRIPTION This specification defines the requirements for a transmitter modulator and fractional–N synthesizer IC to be used in cellular telephones which employ the North American Dual Mode Cellular System (IS–136). • Reference and clock buffers • Control logic for programming and power down modes PIN CONFIGURATION V CC GND MCLK V CC RCLK GND GND PHA PHI RN XTAL1 36 35 34 33 32 INA FEATURES • Low current from 3.
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