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PDF BA3131FS Data sheet ( Hoja de datos )
| Número de pieza | BA3131FS | |
| Descripción | Dual operational amplifier with switch/ for audio use (3 inputs 1 output 2) | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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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
1 page  
Standard ICs
!Measurement circuits
Vcc
Iq
A
+
–
Vref
Fig.2 Iq
Vcc
+
–
1V
Vref Vref
2k
or
10kΩ
Vref
V VoL
Fig. 4 Maximum output voltage: Low
15
t (µsec)
5
t
SR = 10 / t
Fig. 6 Slew rate ( )
BA3131FS
Vcc
+
–
1V
2k
or
10kΩ
V VoH
Vref Vref
Vref
Fig. 3 Maximum output voltage: High
Vcc = 18V
–
VIN +
RL
2kΩ
VOUT
Vref
Fig. 5 Slew rate ( )
0.1µF
Vcc
–
+
10kΩ
10µF
VIN
f = 10kHz
Vref
GB = Vo / VIN × f
V Vo
Fig. 7 Band width frequency gain
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet BA3131FS.PDF ] | |
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| Número de pieza | Descripción | Fabricantes |
| BA3131FS | Dual operational amplifier with switch/ for audio use (3 inputs 1 output 2) | ROHM Semiconductor |
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