bh3874aks2 ROHM Co. Ltd., bh3874aks2 Datasheet - Page 2

• Manufacturer Part Number: bh3874aks2
• Description: Multi-function Sound Processor Built-in 5-band Equalizer
• Manufacturer: ROHM Co. Ltd.

●Electrical characteristics
Ta=25°C, VCC=9V, f=1kHz, Rg=600Ω, RL=10kΩ, Vin=300mVrms, Input Selector=Ach,
Mode Selector=THROUGH, Volume=0dB, Surround=0dB, Graphic Equalizer=0dB, Dynamic Bass=0dB,
Spectrum Analyzer=RESET, unless otherwise noted.
For the measurement marked with *
Matsushita Communication Industrial Co., Ltd is used.
* Note: This IC is not designed to be radiation-resistant.
Circuit Current
Maximum Input Voltage
Maximum Output Voltage
Voltage Gain
Total Harmonic Distortion Ratio
Output Noise Voltage
Residual Noise Voltage
Cross-talk
Channel Balance
Selector A-C
Input Impedance
Selector D Input Impedance
Maximum Volume Attenuation
Vocal Fade Suppression Amount
Graphic Equalizer Gain Setting Error
(At the setting of ±2dB, ±4dB, ±6dB)
Graphic Equalizer Gain Setting Error
(At the setting of ±8dB, ±10dB, ±12dB)
Graphic Equalizer Channel Balance
Dynamic Bass
Boost Gain
Dynamic Bass
Boost Channel Balance
Input Separation
Input Mute Attenuation
Microphone Voltage Gain
Microphone Mute Attenuation
RECOUT Voltage Gain
RECOUT Mute Attenuation
Input Selector D ATT Amount
Surround Maximum Voltage Gain
Simulated Stereo Maximum Voltage Gain L
Simulated Stereo Maximum Voltage Gain R
Spectrum Analyzer Maximum Output Level
Spectrum Analyzer Output Offset Voltage
Spectrum Analyzer Standard Output Level
Ripple Rejection
*1
Parameter
*1
*1
*1
*1
*1
*1
*1
*1
1
, VP-9690A (average value wave detection, effective value display) DIN AUDIO filter by
VRECMU
VSUMAX
ATTMAX
VMICMU
VMONR
VGQBH
VMONL
Symbol
VGQBL
VINMU
VMNO
D2ATT
GQCB
GREC
VMAX
VBCB
GMIC
RIND
VOM
CTIN
THD
VNO
GVF
VOS
VBB
VST
VIM
RIN
GV
CB
RR
CT
IQ
Min.
0.65
-1.5
-1.5
-1.5
11.3
0.4
2.0
-11
6.5
4.0
70
35
10
86
25
15
80
80
17
80
80
31
-2
-3
9
9
7
0
-
-
-
-
2/8
Limits
Typ.
0.01
13.3
1.35
0.7
2.5
8.5
4.8
40
35
80
50
20
95
30
18
90
90
19
90
90
30
11
11
-9
5
0
0
0
0
0
9
-
Max.
0.05
10.5
15.3
200
1.5
1.5
1.5
1.7
60
21
13
50
20
65
30
21
13
11
-7
2
3
-
-
-
-
-
-
-
-
-
-
-
µVrms
µVrms
Vrms
Vrms
Unit
mA
mV
kΩ
kΩ
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
%
V
V
No signal
THD=1%
THD=1%
Vin=150mVrms,
400Hz-30kHz BPF
Biamp=0dB, DIN AUDIO
Rg=0Ω, Volume =-∞,
Biamp=0dB, DIN AUDIO
Biamp=0dB, Rg=0Ω,
DIN AUDIO
Referenced to Lch
DIN AUDIO
Vin=100mVrms
fin=100, 300, 1k, 3k, or 10kHz
Vin=100mVrms
fin=100, 300, 1k, 3k, or 10kHz
Referenced to Lch
Vin=40mVrms, fin=75Hz
23pin=GND
Referenced to Lch
DIN AUDIO
DIN AUDIO
Vin=100mVrms
Vin=100mVrms, DIN AUDIO
DIN AUDIO
Vin=100mVrms, fin=10kHz
Vin=100mVrms, fin=680Hz
Vin=100mVrms, fin=680Hz
Vin=-19dBV
Vin=0Vrms
Vin=-37dBV
fin=105, 340, 1k, 3.4k, or 10.5kHz
VRR=100mVrms
fRR=100Hz, DIN AUDIO
Condition