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BA2902F Arkusz danych(PDF) 17 Page - Rohm

Numer części BA2902F
Szczegółowy opis  Ground Sense Operational Amplifiers
PDF  26 Pages
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Producent  ROHM [Rohm]
Strona internetowa  http://www.rohm.com
Logo ROHM - Rohm

BA2902F Arkusz danych(HTML) 17 Page - Rohm

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Technical Note
BA10358F/FV, BA10324AF/FV, BA2904SF/FV/FVM, BA2904F/FV/FVM
BA2902SF/FV/KN, BA2902F/FV/KN, BA3404F/FVM
17/25
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
BA10358 family
BA10324A family
BA2904 family
BA2902 family
BA3404 family
calculation
VCC VEE EK Vicm VCC VEE EK Vicm VCC VEE EK Vicm
Input Offset Voltage
VF1
ON
ON OFF
5
0
-1.4
0 5~30
0
-1.4
0
15
-15
0
0
1
Input Offset Current
VF2 OFF OFF OFF
5
0
-1.4
0
5
0
-1.4
0
15
-15
0
0
2
Input Bias Current
VF3 OFF ON
OFF
5
0
-1.4
0
5
0
-1.4
0
15
-15
0
0
3
VF4
ON OFF
Large Signal Voltage Gain
VF5
ON
ON
ON
15
0
-1.4
0
15
0
-1.4
0
15
-15
10
0
4
VF6
15
0
-11.4
0
15
0
-11.4
0
15
-15 -10
0
Common-mode Rejection
Ratio (Input common-mode
Voltage Range)
VF7
ON
ON OFF
5
0
-1.4
0
5
0
-1.4
0
15
-15
0
-15
5
VF8
5
0
-1.4 3.5
5
0
-1.4 3.5
15
-15
0
13
Power Supply
Rejection Ratio
VF9
ON
ON OFF
5
0
-1.4
0
5
0
-1.4
0
2
-2
0
0
6
VF10
30
0
-1.4
0
30
0
-1.4
0
15
-15
0
0
-Calculation-
1. Input Offset Voltage (Vio)
]
V
[
Rs
/
Rf
+
1
VF1
Vio
2. Input Offset Current (Iio)
]
A
[
Rs)
/
Rf
+
(1
×
Ri
VF1
-
VF2
Iio
3. Input Bias Current (Ib)
]
A
[
Rs)
/
Rf
+
(1
×
Ri
×
2
VF3
-
VF4
Ib
4. Large Signal Voltage Gain (Av)
]
dB
[
VF6
-
VF5
Rf/Rs)
+
(1
×
EK
Log
×
20
Av
Δ
5. Common-mode Rejection Ration (CMRR)
]
dB
[
VF7
-
VF8
Rf/Rs)
+
(1
×
Vicm
Log
×
20
CMRR
Δ
6. Power supply rejection ratio (PSRR)
]
dB
[
VF9
-
VF10
Rf/Rs)
+
(1
×
Vcc
Log
×
20
PSRR
Δ
Fig. 120 Schematic Diagram
(BA3404)
Fig. 121 Test circuit1 (one channel only)
＋IN
－IN
VOUT
VCC
VEE
VOUT
－IN
＋IN
VCC
VEE
Fig. 119 Schematic Diagram
(BA10358/BA10324A/BA2904S/
BA2904/BA2902S/BA2902)
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



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