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AK2347B - Two-way Radio Audio & Sub-Audio Processor

General Description

AK2347B includes audio filter, limiter, splatter filter, compandor, scrambler, which is highly integrated two-way radio baseband functions for FRS and LMR.

Key Features

  • Audio processing.
  • TX and RX amplifier.
  • Pre/De-emphasis circuit.
  • Compressor and Expander with no external components.
  • Scrambler and De-scrambler in frequency inversion type (3.388kHz or 3.290kHz).
  • Limiter with level adjuster.
  • Splatter filter for wide and narrow band.
  • Digital controlled amplifier for microphone, modulator and demodulator sensitivity.
  • Sub-Audio filter with level adjuster for CTCSS and DCS.
  • Lo.

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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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ASAHI KASEI [AK2347B] AK2347B Two-way Radio Audio & Sub-Audio Processor 1. Features • Audio processing • TX and RX amplifier • Pre/De-emphasis circuit • Compressor and Expander with no external components • Scrambler and De-scrambler in frequency inversion type (3.388kHz or 3.290kHz) • Limiter with level adjuster • Splatter filter for wide and narrow band • Digital controlled amplifier for microphone, modulator and demodulator sensitivity • Sub-Audio filter with level adjuster for CTCSS and DCS • Low power supply operation: 2.7 to 3,3V • Wide range operating for temperature: -40 to 85 °C • Oscillator circuit for 3.6864MHz and 3.579545MHz crystal • Serial control interface operation • Compact plastic packaging, 24-pin SSOP 2.