Good sand-state design tutorial

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PRR

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Jan 30, 2010
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{EDITED 2018}
Altho it is aimed at integrated circuits, this guy has some GREAT stuff about transistor circuits:

http://www.designinganalogchips.com/
http://www.designinganalogchips.com/_count/designinganalogchips.pdf
 
PRR, this is very nice info. I hope it´s all aplicable in discreet design. I can´t see why it wouldn´t be...

Thanks! :thumb:
 
Updated a couple links to PDFs

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&ved=2ahUKEwiBlpT-ltfeAhVJOq0KHeCUC3QQFjABegQIDBAC&url=https%3A%2F%2Fwww.diodes.com%2Fassets%2FSemicustom-Devices%2F7MANUAL.pdf&usg=AOvVaw06MW9JPOQxFS2-_griEeGd

http://www.designinganalogchips.com/_count/designinganalogchips.pdf

 
scott2000 said:
Updated a couple links to PDFs

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&ved=2ahUKEwiBlpT-ltfeAhVJOq0KHeCUC3QQFjABegQIDBAC&url=https%3A%2F%2Fwww.diodes.com%2Fassets%2FSemicustom-Devices%2F7MANUAL.pdf&usg=AOvVaw06MW9JPOQxFS2-_griEeGd

http://www.designinganalogchips.com/_count/designinganalogchips.pdf
Hans was famous for designing the 555 timer but he did a bunch more (google him). I met him when he had a company called Interdesign making semi-custom ICs. The company I was a technician for in the early 70s used his company/process to reduce a larger complex circuit to a modest number of ICs. Only 3 or 4 "monochips" (what they called their semi-custom ICs), replaced a PCB full of jelly bean ICs and discrete parts.

The Interdesign technology was pretty clever...  Standard silicon chips containing a bunch of uncommitted semiconductor devices and resistors were mass produced, then a custom top metallization layer was overlaid to connect the sundry devices together to perform functional circuits, for a fraction of the cost to tool a full custom IC. 

This was my first (and last) exposure to pinch resistors and multiple collector transistors.  IC design looks like fun, but pretty serious (capital intensive) business. Hans was not your typical design engineer.

JR
 
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