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BU9253AS-E2 PDF预览

BU9253AS-E2

更新时间: 2024-10-28 06:44:39
品牌 Logo 应用领域
罗姆 - ROHM 卡拉OK
页数 文件大小 规格书
17页 932K
描述
Karaoke/Surround Digital Echo

BU9253AS-E2 数据手册

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TECHNICAL NOTE  
Audio Accessory ICs  
Karaoke/Surround  
Digital Echo  
BU9253AS/FS, BU9262AFS  
Description  
The Karaoke/Surround Digital Echo IC incorporates a digital delay circuit, an input/output mixing circuit, supporting Karaoke  
echo and surround system, all in a single chip.  
BU9253AS/FS has functions required by Karaoke echo system, and BU9262AFS has various functions required for  
surround / echo system.  
Features  
BU9253AS/FS>  
1) Digital delay time : 131ms (fCLK = 375kHz)  
2) Built-in mixing circuit for adding original sound and echo sound  
3) Echo mix ratio settable by DC voltage  
4) Built-in amplifier circuit for structuring input/output secondary LPF  
5) Microphone mute function (mute of mixing sound of original sound + echo sound)  
6) Built-in CR oscillation circuit  
BU9262AFS>  
1) Digital delay time : 8-stage setting from 9.2ms to 192ms  
2) Built-in input/output mixing circuit  
3) Built-in feedback, delay volume circuit  
4) Built-in input/output LPF  
5) Serial interface  
6) Auto mute circuit built in (action at power on, mode switching)  
7) Built-in auto reset circuit at power on  
Applications  
Radio cassette recorder, mini-component and karaoke systems.  
Product lineup  
Parameter  
Supply voltage  
BU9253AS  
4.0V5.5V  
375kHz  
6mA  
BU9253FS  
4.0V5.5V  
375kHz  
BU9262AFS  
4.5V5.5V  
2MHz  
Oscillation frequency  
Current consumption  
Operating temperature range  
Package  
6mA  
20mA  
-10+70℃  
SDIP18  
Fixed  
-10+70℃  
SSOP-A16  
Fixed  
-10+70℃  
SSOP-A32  
Variable  
Digital delay  
Echo level  
Fixed  
Fixed  
Variable  
Ver.B Oct.2005  

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