Multimedia ICs Audio digital delay (KARAOKE echo) BU9252S / BU9252F The BU9252S and BU9252F are digital delays specifically for Karaoke systems.
Each has an internal sample hold circuit, an 8-bit A / D and D / A converter and 2kB SRAM, and allows for the selection of one of eight delay times just by attaching an inexpensive ceramic resonator.
A digital echo system can be formed by using either of these ICs together with the BA7725S or BA7725FS.
Applications • Karaoke echo system Electronic circuits that require signal delays Features • 1) Internal digital delay circuit.
2) Internal 8-bit A / D converter.
Sample rate.
(14.
22kHz when fOSC = 455kHz).
3) Internal 2k bytes data SRAM.
4) Inter...

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