by B K Karthik   Last Updated October 09, 2019 14:25 PM

thanks for taking time to look at this question, I need some help with designing an amplifier circuit, it has to be a single stage amplifier, using MOSFETs (Enhancement type)

Gain = -5 Power consumer <= 1mW f-3db = 100 MHz Load capacitor (CL) = 1pF (± 20%) Output swing >= 400 mV

I also need help in calculating the maximum input swing, which can be tolerated by the circuit without getting into linear distortion. Thanks in advance :)

I have no idea what f-3db = 100MHz means, and what type of single stage amplifier (using enhancement type mosfet) that is CS, or CG is to be used.

First of all I have absolutely no idea how to start off with the question, but I took the liberty of assuming a CS amplifier with series RC load will do, I hence assumed Vdd to be 1.8V, Vbias = 1V, Vth= 0.6v, |Z|= 1k ohms, I tried plotting the curve of gm vs id using cadence tool, I did not get the curve as the tool said unbounded values of id, I have attached an image of what I did so far, even though it's negligible(what I have done), please help me solve this question, I have a few more of the same kind, I have to understand how to solve one to follow the procedure and understand in detail how to design similar circuits.

I have done this much so far, I have absolutely no idea how to continue with this question

Tags :

## Related Questions

Updated June 24, 2017 21:25 PM

Updated December 12, 2018 17:25 PM

Updated March 26, 2018 11:25 AM

Updated April 13, 2017 15:25 PM

Updated January 20, 2019 20:25 PM