November 5, 2016

DVD photosensor : weekend die-shot

This is unidentified photo-sensor from DVD-RW drive. Most of the work is done by middle quad - it can receive the signal, track focus (via astigmatic focusing) and follow the track. Additional quads are probably here to improve tracking, they are not used as full quads - there are fewer outputs for left and right quads.

Die size 1839x1635 µm.



Closer look at photo-diodes:

October 29, 2016

K140UD2B - Soviet opamp : weekend die-shot

K140UD2B is an old Soviet opamp without internal frequency compensation. Similar to RCA CA3047T. ICs manufactured in ~1982 have bare die in metal can, ones manufactured in 1988 - have some protective overcoat inside metal can (which is quite unusual).
Die size 1621x1615 µm.


October 20, 2016

National Semiconductor LM330 - first LDO (1976) : weekend die-shot

LM330/LM2930 (LM130) is the first LDO linear regulator manufactured by National Semiconductor since 1976.
Die size 1723x1490 µm.



Read more →
July 3, 2016

MAX2659 - SiGe GPS/GNSS LNA : weekend die-shot

Maxim Integrated MAX2659 is a low-noise (NF 0.8dB) SiGe RF amplifier for GPS/GNSS applications.

June 27, 2016

Microchip HCS301 KeeLoq : weekend die-shot

Microchip HCS301 is an old and popular code hopping encoder for remote controls.
Die size 2510x1533 µm, 1µm technology.



PS. Thanks Andrew for the chips!
June 11, 2016

OPUS Microsystems OP-6111 - MEMS 2D scanner : weekend die-shot

OPUS Microsystems OP-6111 is a sensor-less resonant 2D-tilting MEMS mirror for application requiring laser scanning (laser projectors, 3D scanning, photoresist exposure e.t.c). Electrostatic actuator.

Die size 3688x3180 µm, mirror is 1000 µm in diameter.


May 22, 2016

Silicon Labs Si8641 - quad channel digital isolator : weekend die-shot

Silicon Labs Si8641 uses capacitive coupling to implement digital isolation (up to 5kV, this model 2.5kV) as speeds of up to 1 Mbps.
This particular model (Si8641AB) contains 2 identical dies, apparently configured by bonding some of the pads on the sides.



Read more →