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BU9255FS - KARAOKE echo IC

General Description

Pin No.

Pin No.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Pin name GND ECHO VR N.C.

Key Features

  • 1) Echo mixing ratio is adjustable with a DC voltage. 2) A second order LPF can be configured with the internal amplifier and an attached capacitor and resistor. 3) Delay time of 131ms. (when fCLK = 357kHz) 4) Internal mute function. 5) Single power supply (5V).
  • Block diagram BU9253FS / BU9255FS 16 15 14 13 12 11 10 9 OSC VCC A/D.

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Datasheet Details

Part number BU9255FS
Manufacturer ROHM
File Size 72.86 KB
Description KARAOKE echo IC
Datasheet download datasheet BU9255FS Datasheet

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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Multimedia ICs KARAOKE echo IC BU9253AS / BU9253FS / BU9255FS The BU9253AS, BU9253FS and BU9255FS are single-chip ICs that contain all the components needed to configure a KARAOKE echo system: an A / D and D / A converter, SRAM, LPF, and mixer for mixing source signals. With these ICs, an echo function can be configured easily and with minimum external components. Applications • KARAOKE functions for portable stereo sets, mini component stereo sets, video CDs and DVDs, etc. Features • 1) Echo mixing ratio is adjustable with a DC voltage. 2) A second order LPF can be configured with the internal amplifier and an attached capacitor and resistor. 3) Delay time of 131ms. (when fCLK = 357kHz) 4) Internal mute function. 5) Single power supply (5V).