CMX138AE1
Audio Scrambler and Sub-audio Signalling Processor GEH: TSSOP-28*VPE: 50*(RoHS-konform)
Manufacturer Item No.:
CMX138AE1
Item number:
CMX138AE1
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Product description
The CMX138A is a half-duplex, audio scrambler and sub-audio signalling processor IC for Analogue Two_x0002_way Radio applications. This makes it a suitable device for the leisure radio markets (FRS, MURS, PMR446 and GMRS). This device provides a user programmable frequency inversion audio scrambler, companding and pre/de_x0002_emphasis performing simultaneous processing of Sub-audio and In-band signalling. Other features include an auxiliary ADC channel and an auxiliary DAC interface (with optional RAMDAC, to facilitate transmitter power ramping).
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
- Full Audio-band Processing: Pre and De-emphasis, Compandor, Scrambler and Selectable 2.55/3 kHz Filters
- Sub-audio Signalling: CTCSS, DCS
- Tx Output for Single-point Modulation
- Selectable Audio Processing Order
- Auxiliary System Clock Output
- Auxiliary ADC and Auxiliary DAC
| Voltage: | 3.0 to 3.6 VDC |
|---|---|
| Form factor: | 28-pin TSSOP |
| Temperature: | -40 to +85 °C |
| Dimensions: | 9.7 x 4.4 x 1.2 mm |
| Current: | 8.5 mA |
| Packaging: | Tube |
| Reference Frequency Input: | 3.579 to 19.2 MHz (6.144MHz typ) |
| Duplex Mode: | Half Duplex |
| Signal IO format: | Analog Audio |
| Input Bandwidth: | 50 to 3300 Hz (Filters Off) |
| C-BUS (SPI) Control Interface: | yes |
| On-chip Analog to Digital Converters: | 1 Aux |
| On-chip Digital to Analog Converters: | 1 Aux |