April 6, 2019
ST TSU104IPT - nanopower rail-to-rail opamp : weekend die-shot
ST TSU104IPT - is an extremely low power (580nA per channel) CMOS rail-to-rail quad opamp which could work from 1.5V source.Gain bandwidth is only 8 kHz though. Die size 1123x1219 µm.
March 8, 2019
March 8, 2019
March 1, 2019
Ti TL051CDRA - trimmed JFET 20V/µs opamp : weekend die-shot
Extremely similar to BB OPA134PA.Die size 1587x1070 µm.
February 23, 2019
February 17, 2019
Fake CD40106B CMOS Hex Schmitt-Triggers Inverters : weekend die-shot
This is Chinese Hex-Schmitt Trigger Inverter chip, marked as if it was made by Texas Instruments, sourced from eBay. Interesting part is that it apparently reuses most masks from CD4049 (hex inverter) we've decapped earlier : transistors needed for Schmitt-input were also present at CD4049, but not connected by different top metal. Somebody did saved few thousands $ here.Die size 714x849 µm.
Update: Now with metal stripped. it's a metal-gate CMOS, so no gates survived:
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February 1, 2019
PIC/Atmel ATtiny4 : weekend die-shot
PIC/Atmel ATTiny4 - one of the smallest AVR microcontrollers, with 4KiB Flash, 256B EEPROM, 256B SRAM and just 6 pins.Die size 1368x926 µm.
Update: After metaization etch:
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