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Variable Gain, Sub Femto Ampere Current Amplifier DDPCA-300 - Current Amplifier
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Bootstrapping a low voltage Op Amp to operate with high voltage sig...
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Counting Electrons: Making Ultra-high Sensitivity Femtoamp Measurements
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Femtoampere Input Bias Current Electrometer Amplifier used in New Atomic Force Microscope - EEWeb
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Circuit Note
Teledyne / Philbrick 1702 Five Femtoampere Bias Current Operational Amplifier - Price, Specs
LMP7721 data sheet, product information and support | TI.com
