HT8665
Features
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- Single power supply: 4.5V~5.5V ADM algorithm Auto playback with an echo effect DRAM options:
- 64K
- 256K Sampling rate options:
- 32K bps (bits per second)
- 16K bps
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- Recording capacity: 2, 4, 8, 16 seconds A built-in 2 stage microphone amplifier A built-in DRAM refresh circuit A voltage type D/A output A current type D/A output Auto power-off Low power dissipation
Applications
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Toys Educations
- Games
General Description
The HT8665 is a single chip CMOS LSI using an ADM algorithm. It is designed for applications on talking back with an echo effect. Functions of the IC consist of recording/playing and auto power off in addition to an echo effect. The IC starts recording when a sound input is detected, and stops to play back when silence lasts 0.5 seconds during recording. The auto power off function is activated once a REC/PLAY cycle has been implemented 64 times or an interval of silence exceeds 2 minutes. The HT8665 provides a...
