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BU9252F Datasheet Audio Digital Delay (karaoke Echo)

Manufacturer: ROHM

Overview: 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.

Datasheet Details

Part number BU9252F
Manufacturer ROHM
File Size 63.47 KB
Description Audio digital delay (KARAOKE echo)
Datasheet BU9252F_Rohm.pdf

General Description

s Pin No.

1 2 3 4 5 6 7 8 9 Pin name S/H AIN AGND AOUT AVDD DCNT0 DCNT1 DCNT2 GND Function For attaching sample-and-hold capacitor Analog input Analog circuit ground Analog output Analog circuit power supply Delay setting input Delay setting input Delay setting input Digital circuit ground Pin No.

10 11 12 13 14 15 16 17 18 Pin name OSCO OSCI TDO1 TDO0 TDIN TST2 TST1 TST0 VDD Function Oscillator pin 2 Oscillator pin 1 Test pin (output) Test pin (output) Test pin (input) Test mode setting Test mode setting Test mode setting Digital circuit power supply 2 Multimedia ICs BU9252S / BU9252F •Input / output circuits Pin name Pin No.

Key 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) 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 oscillator circuits.
  • Block diagram 18 VDD 17 16 15 14 13 12 11 10 GND 9 OSCO TDO0 TDO1 OSCI DCNT2 8 TST0 TST1 TST2 TDIN TEST.

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