One of the most important specifications of an op amp is its input-offset voltage. You can null out this voltage on many op amps, but the problem with determining the input-offset voltage is that the ...

Previous installments of this series discussed the need to verify SPICE model accuracy and how to measure the output impedance and small-signal bandwidth of operational amplifier (op amp) models. In ...

We all know how to block the DC offset of an AC signal — that just requires putting a capacitor in series, right? But what if the AC signal doesn’t alternate very often? In that case, things get a ...

National Semiconductor introduces five precision operational amplifiers (op amps) for portable test and measurement, and industrial and medical systems that require signal-conditioning and sensor ...

How to enable a microcontroller to measure floating dc voltages to 2% accuracy. Measuring a floating dc voltage using a microcontroller’s analog-to-digital converter (ADC), with the dc+ to dc– ranging ...