BH3878KS2 Rohm, BH3878KS2 Datasheet
BH3878KS2
Manufacturer Part Number
BH3878KS2
Description
Manufacturer
Rohm
Datasheet
1.BH3878KS2.pdf
(2 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
BH3878KS2
Manufacturer:
ROHM
Quantity:
20
∗
Power supply voltage
Power dissipation
Operating temperature range
Storage temperature range
Derating : 12.0mW/˚C for operation above Ta=25˚C
Power supply voltage
1) All in one chip IC incorporating functions of volume, tone,
2) Soft switching that can reduce the stepping switching noise
3) 5-channel input selector, mode selector, volume, surround
4) Built-in matrix surround, B.P.F for spectrum analyzer.
5) Low distortion, low noise by BiCMOS process using
6) Mode of dynamic bass and bi-amplifier can be switched.
Mini component stereo, micro component stereo, CD radio cassette player, TV
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.
Absolute Maximum Ratings (Ta=25˚C)
Description
Features
Recommended Operating Conditions (Ta=25˚C)
Applications
and spectrum analyzer.
when volume, mode selector, surround, dynamic bass and
the gain of graphic equalizer are switched.
graphic equalizer, dynamic bass, and spectrum analyzer
can be controlled by serial control from micro controller.
resistance ladder type volume.
Parameter
Parameter
Sound Processor IC
Symbol
Symbol
BH3878KS2
Topr
Tstg
Vcc
Vcc
Pd
Min.
8.5
–
–
20
55
Limits
10.0
1200
Typ.
~
~
9
+
+
70
125
∗
Max.
9.5
Dimension (Units : mm)
Unit
mW
Unit
˚C
˚C
V
V
49
64
0.65
SQFP-T64
48
1
12.0±0.2
14.0±0.3
0.3±0.1
33
16
32
17
May, 2001
0.125±0.1
0. 15
00W025A
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BH3878KS2 Summary of contents
Page 1
... 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. ...
Page 2
... Vin=300mVrms, fin=1kHz dB Vin=100mVrms, fin=75Hz, 23pin=GND dB Vin=400mVrms V Vin=–12dBV Vcc 1 Vcc 2 28 HPF ~ ∞ –30dB – VCA FILTER 31 HPF 35 DIGITAL CONTROL 34 33 ALC BH3878KS2 VCC FILTER GND OUTL BASS3 CAP OUTR SCK SI STEPC ...