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SA8025A - Low-voltage 1.8GHz fractional-N synthesizer

Description

The SA8025A is a monolithic low power, high performance dual frequency synthesizer fabricated in QUBiC BiCMOS technology.

The SA8025A is an improved version of the SA8025, suitable for narrow band systems like the Japan Personal Digital Cellular (PDC) system.

Features

  • Operation up to 1.8GHz at 3V.
  • Fast locking by “Fractional-N” divider.
  • Auxiliary synthesizer.
  • Digital phase comparator with proportional and integral charge pump output SR00623 Figure 1. Pin Configuration.
  • Supply voltage range 2.7 to 5.5V.
  • Excellent input sensitivity: VRF_IN =.
  • 20dBm.

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Full PDF Text Transcription

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INTEGRATED CIRCUITS SA8025A Low-voltage 1.8GHz fractional-N synthesizer Product specification IC17 Data Handbook 1996 Oct 15 Philips Semiconductors Philips Semiconductors Product specification 1.8GHz low-voltage Fractional-N synthesizer SA8025A DESCRIPTION The SA8025A is a monolithic low power, high performance dual frequency synthesizer fabricated in QUBiC BiCMOS technology. The SA8025A is an improved version of the SA8025, suitable for narrow band systems like the Japan Personal Digital Cellular (PDC) system. The new design improves the performance of the fractional spur compensation circuitry. The new version is pin-for-pin compatible with the previous version.
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