BH3852S Datasheet, PDF (10/11 Pages) Rohm – Sound control IC

Audio ICs
BH3852S / BH3852FS
(6) Matrix surround
The structure of the matrix surround is as shown in the
figure above. Use the equations shown in the figure to
calculate gain.
(7) DC control
It is recommended that DC control of the VC, TC, BC, and
SC pins be performed by voltage delivered in variable
volume from the Vref pin (12th pin). When using variable
volume, take the discharge current of each pin into ac-
count in determining its settings.
Note:The voltage range for DC control is 0 (V) to Vref (V).
Be sure not to apply voltage greater than Vref (V) to any
pin.
(8) GND
If several capacitors with good high-frequency charac-
teristics are connected in parallel to the 12th-pin capaci-
tor, the characteristics will be improved with respect to
static electricity noise. (Recommended : ceramic capaci-
tors of 0.001µF to 0.1µF)
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