HC1-55564-9
Continuously Variable Slope Delta-Modulator (CVSD)
Features
All Digital
Requires Few External Parts
Low Power Drain: 1.5mW Typical From Single 4.5V
To 6V Supply
Time Constants Determined by Clock Frequency;
No Calibration or Drift Problems: Automatic Offset
Adjustment
Half Duplex Operation Under Digital Control
Filter Reset Under Digital Control
Automatic Overload Recovery
Automatic “Quiet” Pattern Generation
AGC Control Signal Available
Applications
Voice Transmission Over Data Channels (Modems)
Voice/Data Multiplexing (Pair Gain)
Voice Encryption/Scrambling
Voicemail
Audio Manipulations: Delay Lines, Time Compression,
Echo Generation/Suppression, Special Effects, etc.
Pagers/Satellites
Data Acquisition Systems
Voice I/O for Digital Systems and Speech Synthesis
Requiring Small Size, Low Weight, and Ease of
Reprogrammability
Related Literature
- AN607, Delta Modulation for Voice Transmission
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