ba3837f ROHM Co. Ltd., ba3837f Datasheet - Page 6

• Manufacturer Part Number: ba3837f
• Description: Vocal Fader Ic
• Manufacturer: ROHM Co. Ltd.

•
BA3837 / F (unless otherwise noted, Ta = 25°C, Vcc = 10V, f
Mode table (A = pin14, B = pin15, C = pin16)
6
VF : vocal fader output
KC : signal passed through key controller
(1) Microphone output is not muted during muting (ABC = 000 or 100).
(2) Gain and relative phase: See block diagram.
Quiescent current
Maximum output voltage
L / R gain
Low frequency gain
Microphone gain
Crosstalk
Mute attenuation
Vocal suppression rate
Total harmonic distortion
Noise level
Input impedance
Control pin threshold (high)
Control pin threshold (low)
Output switching DC differential
0 : 0V
1. L / R input and output in the through mode are synchronous with a gain of 14dB.
2. L / R input and TK output in the key controller mode are synchronous with a gain of 8dB.
3. FK input and L / R output in the key controller mode are synchronous with a gain of 6dB.
4.MIC input and L / R output are negative phase with a gain of 8dB.
Multimedia ICs
Electrical characteristics
Not designed for radiation resistance.
A B C
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
1 : 5V
Parameter
MUTE
MUTE
LOUT
VF
KC
KC
KC
L
L
Symbol
VthH
THD
VthL
G
V
G
G
MU
CT
SV
R
V
I
DC
Q
om
VM
VT
VF
IN
N
Min.
ROUT
MUTE
MUTE
1.6
2.3
4.7
10
10
54
73
28
—
—
35
—
—
5
KC
KC
KC
VF
R
L
Typ. Max.
0.02 0.07
2.4
2.8
—
—
14
14
70
80
33
15
50
8
7
3.3
0.3
—
17
17
11
—
—
—
22
65
—
26
MUTE
MUTE
L + R
TK
VF
VF
L
L
L
Vrms
Unit
Vrms
mA
k
mV
dB
dB
dB
dB
dB
dB
%
V
V
IN
= 1kHz, V
Through mode
THD = 1%, through mode
Through mode
fin = 50kHz, vocal fader mode
f
f
Vocal fader mode
Through mode, BW : 400Hz - 30kHz
R
LIN, RIN, MICIN, FK
Maximum output voltage differential between L, R and TK modes
IN
IN
Mute
Vocal fader mode
Sound multiplexing mode
Through mode
Mute
Vocal fader mode
Sound multiplexing mode
L + R
g
= 1kHz
= 1kHz
= 0, DIN AUDIO
IN
BA3837 / BA3837F / BA3838F
Mode
= 150mV, R
L
Conditions
—
—
—
= 100k )
Key controller mode
—
—
—
—
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