AMP03GSZ datasheet(7/8 Pages) AD

부품명	AMP03GSZ

상세설명	Precision, Unity-Gain Differential Amplifier

PDF	8 Pages

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제조업체	AD [Analog Devices]

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7 / 8 page

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 = (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

–IN E1

+IN E2

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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