Ken's reverse engineering articles are always a real pleasure to read, but this one is special in that it looks at an analog chip and how typical analog building blocks (current mirrors, differential pairs) are implemented in silicon.
Also, if you've every looked at an analog IC's schematics and wondered what those weird "double collectors" BJT are (https://electronics.stackexchange.com/questions/105777/what-...) , there's a pretty decent description in there of what a BJT actually looks like when implemented in silicon.
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Ken's reverse engineering articles are always a real pleasure to read, but this one is special in that it looks at an analog chip and how typical analog building blocks (current mirrors, differential pairs) are implemented in silicon.
Also, if you've every looked at an analog IC's schematics and wondered what those weird "double collectors" BJT are (https://electronics.stackexchange.com/questions/105777/what-...) , there's a pretty decent description in there of what a BJT actually looks like when implemented in silicon.