Description

The HC-55536 is a CMOS integrated circuit used to convert serial NRZ digital data to an analog (voice) signal. Conversion is by delta demodulation, using the Continuously Variable Slope (CVSD) method of demodulation.

Features

• All Digital

• Requires Few External Parts

• Low Power Drain: 1.5mW from Single 3V to 6V Supply

• Time Constants Determined by Clock Frequency; No Calibration or Drift Problems; Automatic Offset Adjustment

• Filter Reset by Digital Control

• Automatic Overload Recovery

• Automatic “Quiet” Pattern Generation

Applications

• Voice Decoder for Digital Systems and Speech Syntheses

• Voicemail

• Audio Manipulations; Delay Lines, Echo Generation/Suppression, Special Effects, etc.

• Pagers/Satellites