BA3837 Просмотр технического описания (PDF) - ROHM Semiconductor
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BA3837 Datasheet PDF : 11 Pages
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Multimedia ICs
BA3837 / BA3837F / BA3838F
BA3838F (unless otherwise noted, Ta = 25°C, Vcc = 10V, fIN = 1kHz, VIN = 150mV, Rl = 100Ω)
Parameter
Symbol Min. Typ. Max. Unit
Conditions
Quiescent current
IQ
1.9 2.7 3.6 mA Through mode
Maximum output voltage
Vom
2.3 2.8 — Vrms THD = 1%, through mode
L / R gain
GVT
10
14 17
dB Through mode
Low frequency gain
GVF
10
14 17
dB fin = 50kHz, vocal fader mode
Microphone gain
GVM
5
8
11
dB
—
Crosstalk
CT
54
70
—
dB fIN = 1kHz
Vocal suppression rate
SV
28 33 — dB Vocal fader mode
Total harmonic distortion
THD — 0.02 0.07 % Through mode, BW : 400Hz - 30kHz
Noise level
VN
—
15
22 µVrms Rg = 0, DIN AUDIO, through mode
Input impedance
RIN
35
50
65
kΩ LIN, RIN, MICIN, FK
Control pin threshold (high)
VthH 4.7 — —
V
—
Control pin threshold (low)
VthL — — 0.3
V
—
Output switching DC differential ∆DC —
7
46 mV Maximum output voltage differential between L, R and TK modes
᭺ Not designed for radiation resistance.
Mode table (A = pin14, B = pin15, C = pin16)
ABC
LOUT
000
R
001
VF
010
L
011
L
100
KC
101
KC
110
KC
111
KC
0 : 0V 1 : 5V
VF : vocal fader output
KC : signal passed through key controller
ROUT
R
VF
L
R
KC
KC
KC
KC
TK
R
VF
L
L
R
VF
L
L+R
Mode
Key controller mode
Sound multiplexing mode (ROUT)
—
Vocal fader mode
—
Sound multiplexing (LOUT)
—
Through mode
—
Sound multiplexing (R)
Vocal fader mode
Sound multiplexing mode (L)
L+R
••••
∗ Gain and relative phase: See block diagram.
1. Gain of L / R input and output in the through mode: 14 dB (synchronous)
2. Gain of L / R input and TK output in the key controller mode: 8dB (synchronous)
3. Gain of FK input and L / R output in the key controller mode: 6dB (synchronous)
4. MIC input and L / R output are negative phase with a gain of 8dB.
7
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