Has anyone ever tried to make a discrete copy of buf03 or even sim it? The circuit looks very unique to my untrained eyes. Probably lent a single ended sound which is part of why the chip is held in high reputation to this day. And its uniqueness alone could be of great value in this day when theres one too many diamond buffers floating about.
Attached is the most detailed schematic i could find. Id be happy to breadboard it if the missing details could be figured out.
Attached is the most detailed schematic i could find. Id be happy to breadboard it if the missing details could be figured out.
Attachments
Its all followers with constant current sources, except for the feedback network on the output section to lower the output impedance. Can't see any issue simulating that. I suspect the current sources are quite complex and stabilized against temperature and supply voltage changes, and their performance isn't documented.
Constant current sources are completely normal in analog ICs, the circuit is nothing extraordinary. They get the accuracy of offset according to the datasheet by "zener zap trimming", which you aren't going to be able to do in a discrete version unless you can figure out what it means and how to do it!
Constant current sources are completely normal in analog ICs, the circuit is nothing extraordinary. They get the accuracy of offset according to the datasheet by "zener zap trimming", which you aren't going to be able to do in a discrete version unless you can figure out what it means and how to do it!