Product Summary
The HC-55516 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. The applications of the HC-55516 include Voice Transmission over Data Channels (Modems), Voice/Data Multiplexing (Pair Gain), Voice Encryption/Scrambling, Voicemail, and 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 Reprogram ability, Related Literature: AN607, Delta Modulation for Voice Transmission.
Parametrics
HC-55516 absolute maximum ratings: (1)Voltage at Any Pin: GND -0.3V to VDD 0.3V; (2)Maximum VDD Voltage: 7.0V; (3)Junction Temperature: 175℃; (4)Operating VDD: 4.5V to 6.0V; (5)Transistor Count: 1897; (6)Die Dimensions: 147×82; (7)Substrate Potential: +VDD; (8) Process: BiMOSE.
Features
HC-55516 features: (1)All Digital; (2)Requires Few External Parts; (3)Low Power Drain: 1.5mW Typical From Single 4.5V To 6V Supply; (4)Time Constants Determined by Clock Frequency; No Calibration or Drift Problems: Automatic Offset Adjustment; (5)Half Duplex Operation Under Digital Control; (6)Filter Reset Under Digital Control; (7)Automatic Overload Recovery; (8)Automatic "Quiet" Pattern Generation; (9)AGC Control Signal Available.
Diagrams
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![]() HC-5/12VDC |
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![]() HC-50/U |
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![]() HC-52/HSL |
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