Small signal analysis of single-ended to differential BJT amplifiers

[manchandaprabhav]

Looking for a text or video where an analysis of a single-ended to differential BJT amp[lifier is presented in terms of its small signal parameters. Specifically gain of each end, propagation of noise etc.

 

[LvW]

Looking for a text or video where an analysis of a single-ended to differential BJT amp[lifier is presented in terms of its small signal parameters. Specifically gain of each end, propagation of noise etc.

I am sure you will be succesfull - there are many contributions in this area.

 

[danadakk]

Lots of references here :

https://duckduckgo.com/?q=diffgerential+bipolar+amplifier+analysis+pdf&ia=web



Regards, Dana.

 

[dick_freebird]

IMO the only tricks are getting the differential signals
back to single-ended input or output (in this case,
just output) quantities to plot / measure / math. That
is usuallly just planting some vcvs sources in the
testbench, with gound referred outputs from the
difference inputs.

Everything else is just regular idealness-of-amplifier
characterization.

 

[D.A.(Tony)Stewart]

Here's my animation

https://tinyurl.com/yvbd6qwa

 

[LvW]

Here is a short hint for the mathematical treatment of the differential amplifier:
The calculation is quite simple and logical if you treat the arrangement of 2 transistors as a series connection of a common-collector stage (emitter follower) with a common-base stage..

 

[manchandaprabhav]

Thank you, everyone, for your input, but I am looking for a single-ended differential amplifier rather than fully differential amplifier. Fully differential ones are a bit easier to analyze due to their symmetry. Also, my focus is just the theoretical analysis. I have done it myself, than you for your help.

 

[D.A.(Tony)Stewart]

What does a single-ended input differential amplifier look like to you?

?