BA7786FP-Y Ver la hoja de datos (PDF) - ROHM Semiconductor

Número de pieza

componentes Descripción

Fabricante

BA7786FP-Y

Headphone / speaker amplifier for notebook computers

ROHM Semiconductor 

Multimedia ICs

(6) Output level between SYSTEM BEEP IN and LCH

OUT (BA7786FP-Y)

Inputting a pulse wave to SYSTEM BEEP IN causes

LCH OUT to output a pulse wave. The output level of

this pulse wave depends on the resistance between pin

7 and GND and between pin 8 and GND, and is calcu-

lated as follows.

VHS Լ 0.25 ∗ VCC – 0.7 ∗ R8 (VP-P)

13k + R7

R7

7

8

R8

This path is not controlled by EVR or the mute function.

(7) EVR control characteristics

The headphone amplifier is controlled by changing the

resistive potential division ratio.

BA7786FP-Y / BA7787FS

10

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