In my previous blog post on designing light communication receiver circuit using pulse frequency modulation (PFM) technique, I said that because of noise in the output signal I had to use unity gain Sallen-key 2nd order filter. And after the filte…
An operational amplifier (op-amp) is a type of electronic amplifier that is commonly used in analog circuits to amplify signals. It is a high-gain, differential voltage amplifier that typically has two input terminals (inverting and non-inverting) a…
Op-amps can be used to generate various kinds of signals and one of them is sinusoidal waveforms. Sinusoidal waveforms can be generated using operational amplifier using LC circuit. These oscillators are called op-amp based LC oscillators. They ar…
