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BA3472FVT bảng dữ liệu(PDF) 22 Page - Rohm

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Giải thích chi tiết về linh kiện  High Speed with High Voltage Operational Amplifiers
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BA3472FVT bảng dữ liệu(HTML) 22 Page - Rohm

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Datasheet
www.rohm.com
TSZ02201-0RAR0G200100-1-2
© 2012 ROHM Co., Ltd. All rights reserved.
22/36
11.Jul.2014 Rev.004
TSZ22111･15･001
BA3472xxx
BA3472RFVM
BA3474xxx
BA3474RFV
VF
RL
0.1μF
500kΩ
500kΩ
Rf=50kΩ
Rs=50Ω
Ri=10kΩ
EK
NULL
DUT
V
SW1
SW2
Vicm
1000pF
SW3
VCC
VEE
-15V
+15V
Ri=10kΩ
Rs=50Ω
50kΩ
0.1μF
Application Information
NULL method condition for Test Circuit 1
VCC, VEE, EK, Vicm Unit : V
Parameter
VF
S1
S2
S3
VCC
VEE
EK
Vicm Calculation
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)
Switch Condition for Test Circuit 2
SW No.
SW
1
SW
2
SW
3
SW
4
SW
5
SW
6
SW
7
SW
8
SW
9
SW
10
SW
11
SW
12
SW
13
SW
14
Supply Current
OFF OFF OFF
ON
OFF
ON
OFF OFF OFF OFF OFF OFF OFF OFF
Maximum Output Voltage(High)
OFF OFF
ON
OFF OFF
ON
OFF OFF
ON
OFF OFF OFF
ON
OFF
Maximum Output Voltage(Low)
OFF OFF
ON
OFF OFF
ON
OFF OFF OFF OFF OFF OFF
ON
OFF
Output Source Current
OFF OFF
ON
OFF OFF
ON
OFF OFF OFF OFF OFF OFF OFF
ON
Output Sink Current
OFF OFF
ON
OFF OFF
ON
OFF OFF OFF OFF OFF OFF OFF
ON
Slew Rate
OFF OFF OFF
ON
OFF OFF OFF
ON
ON
ON
OFF OFF OFF OFF
Gain Bandwidth Product
OFF
ON
OFF OFF
ON
ON
OFF OFF
ON
ON
OFF OFF OFF OFF
Equivalent Input Noise Voltage
ON
OFF OFF OFF
ON
ON
OFF OFF OFF OFF
ON
OFF OFF OFF
Figure 48. 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]



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