BH3856 データシートの表示（PDF） - ROHM Semiconductor

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BH3856

2-wire serial sound control IC

ROHM Semiconductor 

Audio ICs

BH3856S / BH3856FS

Symbol Pin voltage

Equivalent Circuit

VCC

Description

TVO1

TVO2

OUT1

OUT2

SC

BC

TC

VC1

VC2

Vref

SDA

SCL

SASS

VCC

A_GND

D_GND

4.5V

4.5V

A_GND

VCC

25kΩ

9pin

24pin

Pin for high band filter connection.

4.5V

4.5V

−

3.8V

−

−

−

−

10pin

Main volume output pin.

24pin

OUT1 is the volume output for Channel 1.

OUT2 is the volume output for Channel 2.

A_GND

VCC

Digital

VREF

12pin

19pin

20pin

22pin

21pin

A_GND

VCC

18pin

A_GND

VCC

2kΩ

13pin

15pin

17pin

A_GND

Power supply voltage pin.

Analog GND pin. Connected to IC board.

Digital GND pin. Separate from Analog GND pin.

For prevention of shock noise during

step switching.

SC : Surround pin

BC : Bass pin

TC : Treble pin

VC1 : Volume pin (Channel 1)

VC2 : Volume pin (Channel 2)

3.8V regulator output pin.

Output requires capacitor for stopping

oscillation. Output pin has built-in precharge

and discharge circuits, so there is no problem

with start-up or shut-down even with a large

capacitor. This pin is for connection to the

high-band filter.

· I2C bass input pin

SDA : serial data line

SCL : serial clock line

· Slave address selection pin

SASS: slave address selection switch

∗The pin numbers are for the BH3856S.

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