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Dennis Feucht
Content posted in October 2014
Seemingly Simple Circuits, Part 3: Effect of Resistor Tolerances on Diff-Amp Gains
Dennis Feucht  
10/28/2014   12 comments
Resistor tolerances will cause amplification to depart from the ideal. In many seemingly undemanding designs, 1% resistors are not adequate, usually because of excessive CM gain.
ADC Input Ranging
Dennis Feucht  
10/7/2014   6 comments
The input range of a single-supply ADC can be extended with three resistors and some design formulas.
Seemingly Simple Circuits, Part 2: Diff-Amp Calibration & Measurement
Dennis Feucht  
10/4/2014   1 comment
With one-op-amp diff-amp parameters defined in the previous article in this series, the following calibration procedure can be applied manually or by a μC-based system.

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