BH3852FS Ver la hoja de datos (PDF) - ROHM Semiconductor

Número de pieza

componentes Descripción

Fabricante

BH3852FS

Sound control IC

ROHM Semiconductor 

Audio ICs

(4) Treble filter

BH3852S / BH3852FS

S Cutoff frequency (fC1) for the bypass filter can be

changed using the attached C3.

1

fC1 = 2π C3 2kΩ

The fC1 for the recommended constant is

approximately 8 kHz.

S fC2 is determined by the band of the built-in amp.

fC2 is approximately 100 kHz.

Tone control is designed to yield a variation of

±15dB (Typ.) when the frequency to be boosted or

cut is at the peak or bottom of the filter frequency

characteristic, so please take the frequency charac-

teristic into consideration in designing the filter.

(5) Signal level setting

The following figure represents the standard setting for

the BH3852FS / BH3852S.

LAs indicated above, if the front volume and rear volume

input level are set so as not to exceed +6dBV (2Vrms),

the pre-amp gain setting can be used to improve the S / N

ratio.

619

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