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FEATURES Improved Replacement for Burr-Brown OPA-111 and OPA-121 Op Amp LOW NOISE 2 V p-p max, 0.
1 Hz to 10 Hz 10 nV/√Hz max at 10 kHz 11 fA p-p Current Noise 0.
1 Hz to 10 Hz
Low Noise, Low Drift FET Op Amp AD645
8-Pin Plastic Mini-DIP (N) Package CONNECTION DIAGRAMS TO-99 (H) Package
CASE OFFSET NULL –IN +IN –VS OFFSET NULL 8 1 7
HIGH DC ACCURACY 250 V max Offset
Voltage 1 V/؇ C max Drift 1.
5 pA max Input Bias Current 114 dB Open-Loop Gain Available in Plastic Mini-DIP, 8-Pin Header Packages, or Chip Form APPLICATIONS Low Noise Photodiode Preamps CT Scanners Precision I-V Converters
V O T PR RIF M I D
ED
1 2 3 4 TOP VIEW
8 NC
+V
AD645
7 +VS – IN 6 OUTPUT 5 OFFSET NULL 3 + IN 2...