BU9262AFS Datasheet | ROHM

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 (f CLK = 375k Hz) 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-ponent and karaoke systems. - Product lineup Parameter Supply voltage Oscillation frequency Current consumption Operating temperature range Package Digital delay Echo level BU9253AS 4.0V～5.5V 375k Hz 6m A -10～+70℃ SDIP18 Fixed Fixed BU9253FS 4.0V～5.5V 375k Hz 6m A -10～+70℃ SSOP-A16 Fixed Fixed BU9262AFS 4.5V～5.5V 2MHz 20m A -10～+70℃ SSOP-A32 Variable Variable Ver.B Oct.2005 - Absolute maximum ratings ＜BU9253AS＞ Parameter Symbol Supply voltage VCCMAX Terminal voltage Power dissipation Storage temperature TSTG - Reduce by 6.0 m W/°C over 25°C Ratings 7.0 -0.3 ～ VCC+0.3 600- -55 ～ +125 Unit V V m W ℃ ＜BU9253FS＞ Parameter Symbol Supply...