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BA3131 fiches techniques PDF

ROHM Semiconductor - Dual operational amplifier with switch/ for audio use (3 inputs 1 output 2)

Numéro de référence BA3131
Description Dual operational amplifier with switch/ for audio use (3 inputs 1 output 2)
Fabricant ROHM Semiconductor 
Logo ROHM Semiconductor 





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BA3131 fiche technique
Standard ICs
BA3131FS
Dual operational amplifier with switch,
for audio use (3 inputs × 1 output × 2)
BA3131FS
The BA3131FS contains two built-in circuits with operational amplifiers configured of three differential input circuits, an
output circuit, and a switch circuit. The three differential input circuits are separate, enabling independent settings to be
entered for the gain and frequency characteristics.
!Applications
Car stereos, audio amplifiers and other electronic circuits
!Features
1) High gain and low distortion. (Gv = 110dB, THD = 0.0015% typ.)
2) Low noise. (Vn = 2µVrms typ.)
3) Switching circuit can be directly coupled to microcomputer port.
4) Small switching noise.
5) Equipped with 1 / 2 Vcc output circuit for single power supply.
!Block diagram
+ IN1A 1
- IN1A 2
+ IN1B 3
- IN1B 4
+ IN1C 5
- IN1C 6
OUT1 7
SW1 8
SW2 9
GND 10
– + +–
– + +–
– + +–
33
RR
20 + IN2A
19 - IN2A
18 + IN2B
17 - IN2B
16 + IN2C
15 - IN2C
14 OUT2
13 Vref OUT
12 1 / 2 VCC
11 VCC

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