HC1-55564-9 - Continuously Variable Slope Delta-Modulator (CVSD)
The HC-55564 is a half duplex modulator/demodulator CMOS intergrated circuit used to convert voice signals into serial NRZ digital data and to reconvert that data into voice.
The conversion is by delta-modulation, using the Continuously Variable Slope (CVSD) method of modulation/demodulation.
While
HC1-55564-9 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 Contr
