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The BH3874AKS2 is a sound control IC for mini-component stereo. 4-ch input selector, vocal fade, volume, surround, 5-band graphic equalizer, dynamic bass, and 5-band spectrum analyzer are integrated into a single chip. Soft switch can reduce the switching noise occurred when volume, vocal fade, surround, and dynamic bass are switched.
BH3874AKS2 Features
1) A single chip IC integrates all functions of volume, tone control, and spectrum analyzer. 2) Soft switching can reduce the noise occured when volume, mode selector, surround, dynamic bass, and gain of graphic equalizer are switched. 3) 4-ch input selector, mode selector, volume, surround, graphic equalizer, dynamic bass, and spectrum analyzer. 4) Built-in matrix surround, pseudo stereo circuit, and band pass filter for spectrum analyzer. 5) Low distortion and low noise due to the BiCMOS process adopting resistance ladder volume. 6) Filters of dynamic bass and biamp can be set freely by the combination of LPF and HPF.
BH3874AKS2 Typical Application
Mini component stereo, Micro component stereo, CD radio cassette players, and TV.
BH3878KS2 General Description
BH3878KS2 is a sound controller IC for mini component stereo. 5-channel input selector, vocal fader, volume, surround, 5-band graphic equalizer, dynamic bass, and 5-band spectrum analyzer are all integrated into this single chip. Switching noise is reduced when volume, vocal fader, surround and dynamic bass are changed by soft switch.
BH3878KS2 Maximum Ratings
Parameter
Symbol
Limits
Unit
Power supply voltage
Vcc
10.0
V
Power dissipation
Pd
1200∗
mW
Operating temperature
Topr
20 ~+ 70
°C
Storage temperature
Tstg
55 ~+ 125
°C
BH3878KS2 Features
1) All in one chip IC incorporating functions of volume, tone, and spectrum analyzer. 2) Soft switching that can reduce the stepping switching noise when volume, mode selector, surround, dynamic bass and the gain of graphic equalizer are switched. 3) 5-channel input selector, mode selector, volume, surround graphic equalizer, dynamic bass, and spectrum analyzer can be controlled by serial control from micro controller. 4) Built-in matrix surround, B.P.F for spectrum analyzer. 5) Low distortion, low noise by BiCMOS process using resistance ladder type volume. 6) Mode of dynamic bass and bi-amplifier can be switched.
BH3878KS2 Typical Application
Mini component stereo, micro component stereo, CD radio cassette player, TV