January 31, 2020
140UD9 - general purpose Soviet opamp (1989) : weekend die-shot
Like some of the K140UD2B this one has polymer overcoat, which causes interference pattern across the area due to thickness non-uniformity. 140UD9 is similar to CA3047 with differences in the final amplification stage.Die size 1780x1780 µm.
January 1, 2020
1977 Unisonic Blackjack - Rockwell A4821 PMOS uC : weekend die-shot
You can read about reverse engineering of this chip here (+following parts) and here, some information about the game is here.
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December 26, 2019
December 9, 2019
Infineon BFP540FESD - 30Ghz fT NPN BJT : weekend die-shot
Not often we see multiple metal layers in BJT's. Die size 246x223 µm.
December 7, 2019
TI LMV321 - general purpose 5V opamp: weekend die-shot
Significantly smaller than ST TS321, but low-voltage only. New designs though should use LMV321A.Die size 635x567 µm.
December 1, 2019
November 17, 2019
