Small signal analysis of single-ended to differential BJT amplifiers

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manchandaprabhav

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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.
 

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

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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.
 

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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..
 

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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.
 

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