HT8970 Datasheet, PDF (1/9 Pages) Holtek Semiconductor Inc – Voice Echo

HT8970
Voice Echo
Features
· Operating voltage: 4.5V~5.5V
· ADM algorithm
· Low noise
- _{Echo mode:-85dB}
- _{Surround mode:-90dB}
· Low distortion rate
- _{Echo mode: 1%}
- _{Surround mode: 0.2%}
· Built-in 20Kb SRAM
· Automatic reset function
· Package type: 16-pin DIP/SOP
Applications
· Television
· Karaoke systems
· Video disc player
· Sound equipments
General Description
The HT8970 is an echo/surround effect processor.
It is designed for various audio systems including
karaoke, television, sound equipments, etc. The
chip consists of a built-in pre-amplifier, VCO or
Voltage Control OSC, 20Kb SRAM, A/D and D/A
converters as well as delay time control logic.
Its built-in 20Kb SRAM can generate delay
time effect and can control the delay time value
through the external VCO resistor.
The VCO circuit can reduce external compo-
nents and make it easy to adjust the delay time.
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March 14, 2000