HT8972 is an echo/surround effect processor designed for various audio systems including karaoke, television, sound equipment, etc. The chip consists of a built-in pre-amplifier, VCO or Voltage Control OSC, 40Kb SRAM, A/D and D/A converters, as well as delay time control logic. Its built-in 40Kb SRAM can generate delay time effect and can control the delay time value through the external VCO resistor.
The HT8972 is an echo/surround effect processor designed for audio systems such as televisions and karaoke equipment. It integrates a pre‑amplifier, VCO, 40 Kb SRAM, A/D and D/A converters, and delay‑time control logic.
The device is supplied in a 16‑pin DIP/SOP package and offers two operating modes (echo and surround) with specifications such as 4.5 V‑5.5 V supply, low THD, and configurable delay times via external resistors.
| Operating Voltage | 4.5 V ~ 5.5 V |
|---|---|
| Built‑in SRAM | 40 Kb |
The HT8972 operates from 4.5 V to 5.5 V.
It includes a built‑in 40 Kb SRAM for delay‑time processing.
The chip is offered in a 16‑pin DIP or SOP package.