September 16, 2018

Microchip MCP6V27 - auto-zero opamp : weekend die-shot

MCP6V27 is a CMOS opamp offering <2 µV input offset voltage. Datasheet have nice description of it's auto-zero operation principle (Page 21+).

September 8, 2018

AD MAT02 - supermatched BJT - real vs fake : weekend die-shot

LM394 gone first. Manufacturing of MAT02 stopped around 2010. No surprise it is hard to come by a real one from old stock.
Modern alternatives for low noise supermatched BJTs are Analog Devices MAT12 and the like.

Genuine one first (both Analog MAT02CH and MAT02EH are the same). Die size 1506x1407 µm. Image matches photo in datasheet.
PMI logo is Precision Monolithics, Inc, which was bought by Analog Devices back in 1990.

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September 2, 2018

National Semiconductor LM3909 - analog led flasher : weekend die-shot

Quite a bit different from CMOS led blinkers we've seen in the past. Die size 935x733 µm.

August 25, 2018
August 23, 2018

Linear LT1115 - low-noise opamp : weekend die-shot

Linear LT1115 is a low-noise, low distortion opamp with 10V/µs slew rate. Largest integrated capacitors area on an opamp die we've ever seen.
Die size 2861x2532 µm.

August 19, 2018

2SA979 - matched pnp BJT : weekend die-shot

2 separate dies inside. Die size 435x435 µm.