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ROHM Semiconductor - Audio sound controller

Numéro de référence BH3857
Description Audio sound controller
Fabricant ROHM Semiconductor 
Logo ROHM Semiconductor 





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BH3857 fiche technique
Audio ICs
Audio sound controller
BH3857AFV
The BH3857AFV is a signal-processing IC for controlling audio quality in CD radio-cassette players and mini-component
stereo systems. Three-line serial control is available making it easy to adjust tone and volume using a microprocessor.
FApplications
Mini-component stereo systems, CD radio cassette play-
ers, car audio systems and TVs.
FFeatures
1) Volume (main volume) and tone (bass and treble)
control possible by direct serial link to a microproces-
sor. DC control is also possible.
2) Volume control is done with a low-distortion, low-
noise VCA, and step noise is suppressed.
3) The gain of the input amplifier can be adjusted, and
two surround matrixes are available to expand the
sound.
4) The IC includes a stable reference voltage source
and input buffer to reduce external component re-
quirements, and comes in a compact 40-pin SSOP
package that is perfect for compact designs.
5) Four open-collector outputs are provided to make
logic control possible.
FAbsolute maximum ratings (Ta = 25_C)
FRecommended operating conditions (Ta = 25_C)
664

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