BH3532 查看數據表（PDF） - ROHM Semiconductor

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BH3532

Audio digital potentiometers

ROHM Semiconductor 

Audio ICs

FCircuit operation

The BH3532FS has two 22kΩ variable resistance sys-

tems which can be set in 256 steps (86Ω intervals).

Resistance can be set in 256 steps using the MSB first

8-bit data.

Input data is 17-bit serial data. The first bit is always “L”.

The next eight bits set the resistance for wiper 1. The last

eight bits set the resistance for wiper 0.

BH3532FS

Input data is effective when the EN terminal is set to “H”,

and is put on hold when the EN terminal is set to “L”. Also,

the reading of the data is performed when CLK rises.

When input data is effective, the previous output data is

output serially to the DOUT terminal.

See the figures below for more details.

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