Difference amplifiers are a very compact solution to measure µA currents. For a solution that can measure down to nA currents, see our "Highest Accuracy after calibration" and "Highest Accuracy" signal chains. A high voltage buffer is added in-front of the DiffAmp to minimize the bias current error as well as to maintain the resistor matching of the DiffAmp to avoid any degradation in CMRR performance.
Difference amplifiers are a very compact solution to measure µA currents. For a solution that can measure down to nA currents, see our "Highest Accuracy after calibration" and "Highest Accuracy" signal chains. A high voltage buffer is added in-front of the DiffAmp to minimize the bias current error as well as to maintain the resistor matching of the DiffAmp to avoid any degradation in CMRR performance.
