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