CMX138AE1

Audio Special Purpose Overview

The CMX138AE1 is a single-channel audio signal processor IC from CML Microcircuits, designed for analogue two-way radio applications. It integrates audio processing functions including scrambling, companding, and tone signalling within a 28-pin TSSOP package. The device operates on a single supply voltage of 3.0V to 3.6V and communicates via a serial interface.

Audio Special Purpose Feature Summary

• Single-channel audio signal processing
• Supports frequency inversion audio scrambling
• Integrated sub-audio signalling capabilities (CTCSS/DCS)
• Serial interface for register configuration
• 28-TSSOP surface-mount package
• Operating temperature range: -40°C to +85°C

Audio Special Purpose Applications

• Analogue two-way radio systems
• Audio signal processing in communication devices
• Leisure and professional radio equipment

Audio Special Purpose Procurement Notes

The part is currently listed as 'Active' or 'In-stock' by major distributors such as DigiKey. Standard lead time is approximately 18 weeks. Ensure the ordering suffix 'E1' is specified to obtain the correct 28-TSSOP package variant.

Audio Special Purpose Selection Notes

Select this component for applications requiring integrated audio processing and signalling in low-voltage (3V-3.6V) analogue radio designs. Verify that the host system supports the required serial interface protocol for control and configuration.