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BU9252S Datasheet(PDF) 1 Page - Rohm |
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BU9252S Datasheet(HTML) 1 Page - Rohm |
1 / 6 page 1 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 •Block diagram 8 × 2k SRAM ADDRESS COUNTER AND MAIN TIMING TEST CIRCUIT 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) Internal 8-bit D / A converter. 5) CMOS design for low power consumption. 6) Internal sample hold circuit. 7) Internal feedback resistors and capacitors for oscilla- tor circuits. |
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