CML’s DuraTALK family of digital voice products comprises a range of flexible technologies supporting voice-data generation, coding, transcoding and decoding functions for digital communication systems, as well as many other in-band audio applications where there is a need for storage and playback.
| Product | Description | Voice-data Scheme | Voice-band Codec | Supply Voltage (V) |
Typ. Current (mA) |
Package Type | Additional Features | Key Benefits |
|---|---|---|---|---|---|---|---|---|
| CMX655D | Ultra-low Power Voice Codec | PCM (linear, A-law, µ-law) |
Yes | 1.8 - 3.6 | 300µA | 24-VQFN | 1W Speaker Driver | MEMS microphone support Ultra-low operating power consumption |
| CMX7261 | Digital Voice Multi- transcoder |
ADM, CVSD, PCM G.729A, G.711, G.723.1 |
Yes | 3.0 - 3.6 | 52 | 64-VQFN | I/O Filters | Performs as a group of audio codecs. |
| CMX618 CMX638 | Low-cost 2400bps Vocoder | RALCWI ™ | Yes | 3.0 - 3.6 | 20 | 48-VQFN 48-LQFP |
I/O Filters | Low-cost 2400bps Vocoder with robust FEC. CMX638 offer duplex operation. |
| CMX649 | Adaptive Delta Modulation (ADM) Codec |
ADM PCM CVSD |
Yes | 2.7 - 5.5 | 2.9 | 20-TSSOP 20-SOIC |
I/O Filters | General purpose error tolerant voice coding scheme. |
| CMX639 | CVSD Voice Codec | CVSD | Yes | 3.0 - 5.5 | 1.9 | 16-SOIC 24-TSSOP |
I/O Filters | General purpose error tolerant voice coding scheme. |