BU9253 Datasheet (Rohm) - KARAOKE echo IC

BU9253, KARAOKE echo IC

* BU9253FS / BU9255FS Pin No.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 BU9253AS / BU9253FS / BU9255FS BU9253AS Function 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.

BIAS DAINT IN DAINT OUT DALPF IN Ground Echo level DC control Internally Analog DC bias DA i

BU9253 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 BU