Gain in this basic inverting amplifier is equal to R2 over R1 (G=R2/R1) so the last option is the correct one. Since the example circuit is direct coupled for amplification of a small AC signal, we ...

The very basics of operational amplifiers. Learn comparator, inverting, and non-inverting op-amp configurations. An operational amplifier, or op amp, is a dc-coupled high-gain electronic voltage ...

I went through all the usual steps to minimize noise. I chose low noise passive components and the lowest-noise instrumentation amplifiers on the market, mounted the most sensitive part of the circuit ...

For instance, if an op amp uses ±5-V supplies, the output can swing over the full range from – 5 V to + 5 V or 10 V. For a single-supply op amp, the range would be 0 to + 5 V.

But there are complications. To get very high gain, the circuit becomes prone to oscillating due to the inherent capacitance of the photodiode, so there’s a damping capacitor in the feedback loop.

However, as we all know, the power gain of the CG LNA is insufficient [17], so a CS amplifier is utilized as a second stage. The proposed LNA circuit utilizes current-reuse and forward body biasing ...