BH3868BFS
Audio ICs
1/27
Audio sound processor with
∗
R

BH3868BFS


BH3868BFS is a Audio sound processor IC developed for TV. This IC is built-in volume, balance, tone, surround, BBE
processor and AGC. This IC can be easily controlled by tow-wire serial control (I
2
C BUS).

∗ BBE is a registered trade mark of BBE Sound Inc.
Note : I
2
C BUS is a registered trade mark of Philips.


!Applications
Suitable for TV, TV-radio, PC-TV, mini-component and car audio system, etc.


!Features
1) Volume (main volume), balance (right/left), tone (bass and treble), surround (mode and effect), BBE processor (effect)
can be controlled by I
2
C-BUS.
2) Volume is VCA with low distortion rate and low noise and can restrain the step noise.
3) The reference voltage source is stable, only a few external devices are required because I/O buffer is contained, and
the package is suitable for space-saving design for SSOP-A32.
4) Sound spread can be controlled by the matrix surround and effect adjustment.
5) The built-in AGC circuit can absorb the volume difference between input sources.
6) The contained BBE processor, which reproduce an original sound, controls the effect.


!Absolute maximum ratings (Ta=25°C)
Parameter Symbol Limits Unit
Impressed voltage
Power dissipation
Operating temperature range
Storage temperature range
VCC
Pd
Topr
Tstg
10.0
850
∗
−40 to +85
−55 to +150
V
mW
°C
°C
∗ When mounted on a glass epoxy board 70mm × 70mm × 1.6mm.
Reduced by 6.8mW for each increase in Ta of 1°C over 25°C.



!Recommended operating conditions (Ta=25°C)
Parameter Symbol Typ.Min. Max. Unit
Power supply voltage VCC −7.0 9.5 V