Datasheet AMP03 (Analog Devices) - 7

AMP03 System Design Suggested Op Amp AMP03 E2 Requirement For A1 and A2
Source Impedance Low, Need Low OP27, OP37 Voltage Noise Performance OP227 (Dual Matched)
R E
OP270 (Dual)
1 OP80EJ
OP271 OP470
I I 0 LOAD 0 = ( E1 – E2 )/R
OP471 Source Impedance High OP80 Figure 8. Differential Input Voltage-to-Current Converter (RS ≥ 15 kΩ). Need Low Current OP41 for Low IOUT. OP80EJ maintains 250 fA max input current, Noise OP43 allowing IO to be less than 1 pA. OP249 OP97
AMP03 –IN E1 A1
Require Ultrahigh Input Impedance OP80
R2
OP97 OP41
R1 E R2 0 OUTPUT
OP43
A2
Need Wider Bandwidth and High OP42
+IN E2
Speed OP43 OP249
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. REV. F –7– Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM PIN CONNECTIONS SPECIFICATIONS WAFER TEST LIMITS ABSOLUTE MAXIMUM RATINGS ORDERING GUIDE DICE CHARACTERISTICS BURN-IN CIRCUIT SLEW RATE TEST CIRCUIT Typical Performance Characteristics APPLICATION CIRCUITS APPLICATIONS INFORMATION MAINTAINING COMMON-MODE REJECTION OUTLINE DIMENSIONS Revision History