BH3874AKS2 Datasheet, PDF (1/25 Pages) Rohm – Sound processor IC

Audio ICs
Sound processor IC
BH3874AKS2
BH3874AKS2
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.
!Applications
Mini component stereo, Micro component stereo, CD radio cassette players, and TV.
!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.
!Absolute maximum ratings (Ta=25°C)
Parameter
Symbol
Limits
Unit
Power supply voltage
VCC
Power dissipation
Pd
10.0
V
1200^∗
mW
Operating temperature range
Topr
−12 to +85
°C
Storage temperature range
Tstg
−55 to +125
°C
∗ Reduced by 12mW for each increase in Ta of 1°C over 25°C.
A standard board, 70×70×1.6mm, shall be mounted.
!Recommended operating conditions (Ta=25°C)
Parameter
Power supply voltage
Symbol Min. Typ. Max.
Unit
VCC
8.0
−
9.5
V