bh3852fs ROHM Co. Ltd., bh3852fs Datasheet

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bh3852fs

Manufacturer Part Number
bh3852fs
Description
Sound Control Ic
Manufacturer
ROHM Co. Ltd.
Datasheet
The BH3852S and BH3852FS are signal processing ICs designed for volume and tone control in CD radio cassettes
and other audio products. They can be used without a microcomputer because they use DC current for control.
FApplications
CD radio cassettes, micro components, car stereos, tele-
visions
FFeatures
1) Can control volume (main volume) and tone (bass,
2) Volume is produced by a low-distortion, low-noise
FAbsolute maximum ratings (Ta = 25_C)
FRecommended operating conditions
Sound control IC
BH3852S / BH3852FS
Audio ICs
treble).
VCA, is controlled with DC current, and, due to an in-
ternal reference voltage with temperature com-
pensation, can control two channels with a single
variable resistor.
3) Input amp can be used for gain adjustment, and ma-
trix surround yields powerful sound.
611

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bh3852fs Summary of contents

Page 1

... Audio ICs Sound control IC BH3852S / BH3852FS The BH3852S and BH3852FS are signal processing ICs designed for volume and tone control in CD radio cassettes and other audio products. They can be used without a microcomputer because they use DC current for control. FApplications CD radio cassettes, micro components, car stereos, tele- ...

Page 2

... Audio ICs FBlock diagram FPin descriptions 612 BH3852S / BH3852FS ...

Page 3

... Audio ICs FInput / output circuits BH3852S / BH3852FS 613 ...

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... Audio ICs 614 BH3852S / BH3852FS ...

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... Audio ICs FElectrical characteristics(unless otherwise noted 25_C, V VOL = Max., TONE = ALL FLAT, R BH3852S / BH3852FS = 8V 1kHz 20kHz 600 , R = 10k , INPUT_AMP_GAIN = 0dB 615 ...

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... Audio ICs FMeasurement circuit 616 BH3852S / BH3852FS ...

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... Audio ICs FApplication example BH3852S / BH3852FS 617 ...

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... Note: Filter gain is calculated using the equation on the left. Total output gain is the sum of the gain for each of the internal circuits BH3852S / BH3852FS are not present. 1 (input coupling) and C (used to set the ...

Page 9

... 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 ratio ...

Page 10

... 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. 620 BH3852S / BH3852FS (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 V pin (12th pin). When using variable ...

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... Audio ICs FElectrical characteristic curves FExternal dimensions (Units: mm) BH3852S / BH3852FS 621 ...

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