Burr-Brown PGA200 Instrumentation amplifier hybrid. Packaged in a nice ceramic carrier with gold plated terminals and ceramic lid. Has digital die, resistor network for gains 1,10,100,1000 and analog amplifiers die.
Images of dies structures with 100x magnification (Zeiss Axiotron, DIC brightfield)
In this thread I'll post some interesting chip I come across during teardowns.
Burr-Brown PGA200 Instrumentation amplifier hybrid. Packaged in a nice ceramic carrier with gold plated terminals and ceramic lid. Has digital die, resistor network for gains 1,10,100,1000 and analog amplifiers die.
Images of dies structures with 100x magnification (Zeiss Axiotron, DIC brightfield)
Lot of laser trimming on resistive elements:
Same goes for resistor network die: