BH3857AFV

Features:

1) Volume (main volume) and tone (bass and treble) control possible by direct serial link to a microprocessor. 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 requirements, 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.

Application

Mini-component stereo systems, CD radio cassette players, car audio systems and TVs.


Specifications

Parameter	Symbol	Limits	Unit
Applied voltages	VEE	4.5	V
Power dissipation	Pd	1000	mW
Operating temperature	Topr	40 ~  + 85	°C
Storage temperature	Tstg	55 ~  + 150	°C
Port pin voltage	PORT1~PORT4	15.0	V
Control pin applied voltage	Vc,Tc,Bc,Sc	Vref	mW

Description

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.