BH3856S / BH3856FS
Audio ICs
2-wire serial sound control IC
BH3856S / BH3856FS
The BH3856S and BH3856FS are signal processing ICs designed for volume and tone control in televisions, mini
component stereo systems, and other audio products. Their two-line serial control (I
2
C BUS) enables them to control
volume and tone on the basis of signals from a microcomputer, etc.
!Applications
Televisions, [Video equipped television], personal computer televisions, mini component stereo systems, car stereos.
!Features
1) I
2
C BUS facilitates direct serial control from a microcomputer of volume (main volume), balance (left / right), and tone
(bass, treble). DC control is also possible.
2) Volume is produced by a low-distortion, low-noise VCA. Designed to minimize step noise.
3) Stable standard voltage supply and built-in I/O buffer mean that few attachments are needed. SSOP-A32 package
designed to save space.
4) Matrix surround yields powerful sound.
!Absolute maximum ratings (Ta = 25°C)
Parameter Symbol Limits Unit
Power supply voltage 10.0 V
Power dissipation
BH3856S
Pd
1200
∗
1
mW
BH3856FS 850
∗
2
Operating temperature Topr
−40~+85 °C
Storage temperature Tstg −55~+150 °C
Vcc
∗
1 Reduced by 12mW for each increase in Ta of 1°C over 25°C.
∗
2 Reduced by 6.8mW for each increase in Ta of 1°C over 25°C.
!Recommended operating conditions (Ta = 25°C)
Parameter Symbol Min. Typ. Max. Unit
Power supply voltage 6.0 9 9.5 VVCC
Note : I
2
C BUS is a registered trademark of Philips.