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HT9142 Datasheet FM IF Detector

Manufacturer: Holtek Semiconductor

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General Description

The HT9142 is designed for FM communication system devices.

It combines a paging system, mixer, IF limiter, Quadrature detector, operation amplifier, comparator and more.

The HT9142 could provide the customer¢s PAGER system with total solution along with Holtek¢s POCSAG Pager Controller series products.

Overview

HT9142 FM IF Detector.

Key Features

  • Operating voltage: 1.1V~3.5V.
  • Constant power supply voltage can be generated by externally adding a transistor: VREG=1.0V typ.
  • Alarm function sensitivity: VALM=1.1V typ.
  • Low current consumption: ICCQ=1.1mA typ.
  • Built-in 2nd stage mixer for double conversion method.
  • Mixer operating frequency: 10MHz~50MHz.
  • Built-in low-pass filter and waveform shaping circuit enable the extraction of FSK signals from voice signals.
  • Built-in battery-saving function for l.

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