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AMP03GSZ Datasheet(PDF) 7 Page - Analog Devices

Part # AMP03GSZ
Description  Precision, Unity-Gain Differential Amplifier
PDF  8 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AMP03GSZ Datasheet(HTML) 7 Page - Analog Devices

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AMP03
–7–
REV. F
System Design
Suggested Op Amp
Requirement
For A1 and A2
Source Impedance Low, Need Low
OP27, OP37
Voltage Noise Performance
OP227 (Dual Matched)
OP270 (Dual)
OP271
OP470
OP471
Source Impedance High
OP80
(RS
≥ 15 kΩ). Need Low Current
OP41
Noise
OP43
OP249
OP97
Require Ultrahigh Input Impedance
OP80
OP97
OP41
OP43
Need Wider Bandwidth and High
OP42
Speed
OP43
OP249
AMP03
OP80EJ
LOAD
I0
I0 = (E1 – E2)/R
E1
E2
R
Figure 8. Differential Input Voltage-to-Current Converter
for Low IOUT. OP80EJ maintains 250 fA max input current,
allowing IO to be less than 1 pA.
AMP03
R2
R2
R1
–IN E1
+IN E2
A1
A2
E0 OUTPUT
E0 = (1 + 2R2/R1) (E2 – E1)
Figure 9. Suitable Instrumentation Amplifier Requirements
Can Be Addressed by Using an Input Stage Consisting of A1,
A2, R1, and R2. The following matrix suggests a suitable
amplifier.



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