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CMX138A - Audio Scrambler and Sub-Audio Signalling Processor

General Description

The CMX138A is a half-duplex, audio scrambler and sub-audio signalling processor IC for Analogue Twoway Radio applications.

This makes it a suitable device for the leisure radio markets (FRS, MURS, PMR446 and GMRS).

Key Features

  • Programmable Audio Scrambler.
  • Concurrent Audio/Signalling Operations.
  • Full Audio-band Processing: Pre and De-emphasis, Compandor, Scrambler and Selectable 2.55/3 kHz Filters.
  • Auxiliary ADC and Auxiliary DAC.
  • Selectable Audio Processing Order.
  • Sub-audio Signalling: CTCSS, DCS.
  • Auxiliary System Clock Output.
  • Tx Output for Single-point Modulation.
  • Low-power (3.0V to 3.6V) Operation.
  • Flexible Powersave Modes.
  • C-BUS Serial Interface to Host µC.

📥 Download Datasheet

Datasheet Details

Part number CMX138A
Manufacturer Consumer Microcircuits Limited
File Size 1.49 MB
Description Audio Scrambler and Sub-Audio Signalling Processor
Datasheet download datasheet CMX138A Datasheet

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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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CML Microcircuits COMMUNICATION SEMICONDUCTORS CMX138A Audio Scrambler and Sub-Audio Signalling Processor D/138A/4 October 2014 CMX138A: Audio Scrambler and Sub-Audio Signalling Processor with Auxiliary System Clock, ADC and DAC for use in Analogue Radio Systems Features  Programmable Audio Scrambler  Concurrent Audio/Signalling Operations  Full Audio-band Processing: Pre and De-emphasis, Compandor, Scrambler and Selectable 2.55/3 kHz Filters  Auxiliary ADC and Auxiliary DAC  Selectable Audio Processing Order  Sub-audio Signalling: CTCSS, DCS  Auxiliary System Clock Output  Tx Output for Single-point Modulation  Low-power (3.0V to 3.