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BA3472F Datasheet(PDF) 5 Page - Rohm

Part # BA3472F
Description  Operational Amplifiers: High Speed
PDF  10 Pages
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Manufacturer  ROHM [Rohm]
Direct Link  http://www.rohm.com
Logo ROHM - Rohm

BA3472F Datasheet(HTML) 5 Page - Rohm

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BA3472F,BA3472FV,BA3472FVM
Technical Note
5/9
www.rohm.com
2009.11 - Rev.B
© 2009 ROHM Co., Ltd. All rights reserved.
●Schematic diagram
●Test circuit1 NULL method
VCC,VEE,EK,Vicm Unit : [V]
Parameter
VF
S1
S2
S3
BA3472 family
Calculation
VCC
VEE
EK
Vicm
Input Offset Voltage
VF1
ON
ON
OFF
15
-15
0
0
1
Input Offset Current
VF2
OFF
OFF
OFF
15
-15
0
0
2
Input Bias Current
VF3
OFF
ON
OFF
15
-15
0
0
3
VF4
ON
OFF
Large Signal Voltage Gain
VF5
ON
ON
ON
15
-15
＋10
0
4
VF6
15
-15
-10
0
Common-mode Rejection Ratio
(Input Common-mode Voltage Range)
VF7
ON
ON
OFF
15
-15
0
-15
5
VF8
15
-15
0
13
Power Supply Rejection Ratio
VF9
ON
ON
OFF
2
-2
0
0
6
VF10
18
-18
0
0
－Calculation－
1. Input Offset Voltage (Vio)
2. Input Offset Current (Iio)
3. Input Bias Current (Ib)
4. Large Signal Voltage Gain (Av)
5. Common-mode Rejection Ratio (CMRR)
6. Power Supply Rejection Ratio (PSRR)
VCC
VIN-
VIN+
VEE
VOUT
Fig24. Schematic diagram (one channel only)
Fig.25 Test circuit 1 (one channel only)
| VF1 |
Vio =
1 + Rf / Rs
[V]
| VF2
－VF1 |
Iio =
Ri ×(1 + Rf / Rs)
[A]
| VF4
－VF3 |
Ib =
2×Ri× (1 + Rf / Rs)
[A]
ΔEK×(1+Rf /Rs)
Av = 20×Log
|VF5-VF6|
[dB]
ΔVicm×(1+Rf /Rs)
CMRR = 20×Log
|VF8-VF7|
[dB]
ΔVcc×(1+Rf /Rs)
PSRR = 20×Log
|VF10-VF9|
[dB]
VCC
C2
0.1[
μF]
Rf
50[k
Ω]
S1
Ri
Rs
10[k
Ω]
50[
Ω]
10[k
Ω]
50[
Ω]
Ri
Rs
S2
RL
S3
1000[pF]
C3
500[k
Ω]
500[k
Ω]
0.1[
μF]
RK
EK
RK
C1
+15[V]
-15[V]
NULL
V VF
DUT
VEE
Vicm



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