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BA2904YF-C データシート(PDF) 9 Page - Rohm

部品番号 BA2904YF-C
部品情報  Automotive Operational Amplifiers: Ground Sense
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メーカー  ROHM [Rohm]
ホームページ  http://www.rohm.com
Logo ROHM - Rohm

BA2904YF-C データシート(HTML) 9 Page - Rohm

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Technical Note
9/16
BA2904YF-C,BA2904YFVM-C,BA2902YF-C,BA2902YFV-C
www.rohm.com
2011.08 - Rev.B
© 2011 ROHM Co., Ltd. All rights reserved.
Circuit Diagram
Test circuit1 NULL method
VCC,VEE,EK,Vicm Unit:[V]
Parameter
VF
S1
S2
S3
BA2904Y family
BA2902Y family
calculation
Vcc
VEE
EK
Vicm
Input Offset Voltage
VF1
ON
ON
OFF
5~30
0
-1.4
0
1
Input Offset Current
VF2 OFF OFF OFF
5
0
-1.4
0
2
Input Bias Current
VF3 OFF
ON
OFF
5
0
-1.4
0
3
VF4
ON
OFF
Large Signal Voltage Gain
VF5
ON
ON
ON
15
0
-1.4
0
4
VF6
15
0
-11.4
0
Common-mode Rejection Ratio
(Input common-mode Voltage Range)
VF7
ON
ON
OFF
5
0
-1.4
0
5
VF8
5
0
-1.4
3.5
Power Supply Rejection Ratio
VF9
ON
ON
OFF
5
0
-1.4
0
6
VF10
30
0
-1.4
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 Ration (CMRR)
6. Power supply rejection ratio (PSRR)
Fig. 49 Schematic Diagram (one channel only)
Fig. 50 Test circuit1 (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[kΩ]
S1
Ri
Rs
10[kΩ]
50[Ω]
10[kΩ]
50[Ω]
Ri
Rs
S2
RL
S3
1000[pF]
C3
500[kΩ]
500[kΩ]
0.1[μF]
RK
EK
RK
C1
+15[V]
-15[V]
NULL
V VF
DUT
VEE
Vicm
BA2904Y / BA2902Y Schematic Diagram
+IN
-IN
VOUT
VCC
VEE


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