Audio processor for two-way radio

17 September 2008 Analogue, Mixed Signal, LSI

CML Microcircuits has announced a new product introduction to its two-way radio IC lineup.

The new CMX138 is a comprehensive audio processor designed primarily for the growing market of analog ‘leisure’ two-way radio products (FRS, MURS, PMR446 and GMRS). Highly integrated by design, the module offers high performance and low-power consumption, extending end-product battery life.

The product features a user-programmable frequency inversion half-duplex audio scrambler, a flexible audio processing path (consisting of companding, pre/de-emphasis and level setting), with concurrent audio and signalling operations handled by the integrated sub-audio signalling processor (selectable to CTCSS and DCS modes).

Additional features of the CMX138 include an auxiliary ADC channel, auxiliary DAC interface with optional RAMDAC to facilitate transmitter power ramping, auxiliary system clock output and transmit output for single-point-modulation.

The CMX138 is available in a 28-pin (E1) TSSOP package operating from 3,0 to 3,6 V with flexible power saving modes.

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