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BA7787FS Datasheet(PDF) 10 Page - Rohm

Part # BA7787FS
Description  Headphone / speaker amplifier for notebook computers
PDF  24 Pages
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Manufacturer  ROHM [Rohm]
Direct Link  http://www.rohm.com
Logo ROHM - Rohm

BA7787FS Datasheet(HTML) 10 Page - Rohm

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Multimedia ICs
BA7786FP-Y / BA7787FS
(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.
(7) EVR control characteristics
The headphone amplifier is controlled by changing the
resistive potential division ratio.
This path is not controlled by EVR or the mute function.
8
7
R7
R8
VHS
0.25
∗
∗ R8 (VP-P)
VCC – 0.7
13k + R7



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