Four for SuSy?

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darkfenriz

darkfenriz

Member
Joined 2004
Onvinyl said:
Is this Idea a valid option worth trying?
Improved linearity through complementary differential further tamed with sort of double-x?
Or would the circuit blow and explode due to the different charges meeting at the gates?

An externally hosted image should be here but it was not working when we last tested it.


Just a silly morning-idea before coffee & work?
yours,
Rüdiger
Click to expand...

This circuit may be very fine as differential amplifier itself- fast, linear etc., but won't work correctly as front-end of a power feedback amplifier. It is because of drain-gate local feedback, which may cause to ill feedbacks' interaction like 'correction of the correction', which obviously will degrade performance of global feedback. Not to mention low PSRR.
Without drain-gate feedback resistors will be just fine.
regards
 
darkfenriz

darkfenriz

Member
Joined 2004
It is just drawn upside down (think Tharma and some others in early '70 drew -Vcc up and +Vcc down) and lacks biasing circuit- it shows idea of diamond differential. I think diamond combines some pros of so-called 'current feedbak' (one low impedance input) with low distortion of voltage feedback.
regards
 
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