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CMX838 - FRS/PMR446/GMRS Family Radio Processor

General Description

0 4.1 Audio 10 4.1.1 Digitally Controlled Amplifiers (DCA)10 4.1.2 Transmit Input Amplifier 11 4.1.3 Audio Switched Capacitor Filters 11 4.1.3.1 Pre-emphasis/Low-pass Filter 12 4.1.3.2 High-pass Filter 13 4.1.3.3 Deviation Limiter Low-pass Filter13 4.1.4 De-emphasis 14 4.1.5 Transmit Audio Path 14 4

Key Features

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Datasheet Details

Part number CMX838
Manufacturer CML
File Size 0.96 MB
Description FRS/PMR446/GMRS Family Radio Processor
Datasheet download datasheet CMX838 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 CMX838 FRS/PMR446/GMRS Family Radio Processor D/838/8 September 2003 Features and Applications • Advanced one-of-any CTCSS subaudio 50 tone processor • Fast decode time • IRQ on any / all valid tones • Fast scan, group calling, auto response tone select and Tone Cloning™ support • Supply Independent output level • RF Synthesizer • FRS, PMR446 and GMRS RF channels • Configurable charge pump • Audio call tone generator Provisional Issue • Audio processing • Mic amplifier • Pre/De-emphasis • Limiter with Supply Independent output level • Post limiter filtering • Mic, Rx, and Tx digital gain controls • Single and Dual Tx outputs • Signal source and external function switches • Low power, 3V to 5V supply • Powersave and sleep modes • Serial cont