There are many parameters to consider when designing a circuit using an operational amplifier (op amp) including the op-amp’s gain bandwidth (GBW) product, offset voltage and quiescent current. In ...

I ask these types of questions frequently. Do we need another “widget” when everybody and their grandmother makes one of these nowadays? Well, I have not seen any other amplifier that can beat the ...

An optimal way to determine an op amp's input capacitance. Steps involved in making the input-capacitance measurement. 1. With a series resistor at the op-amp input, the input capacitance of the op ...

1. This circuit uses a JFET to bootstrap the cathode of the photodiode. It eliminates the effect of diode resistance and capacitance. This improves bandwidth and reduces noise, but puts a dc voltage ...

Abstract: This article presents the design and implementation of a precision lock-in amplifier for universal capacitive sensing. While conventional capacitive transimpedance amplifier (C-TIA) based on ...