XMOS XS2L200 ASIC from 2014

It’s pretty dense with fine features so we can’t see much of the stuff at low optical magnification here.

Old toshiba NAND from CF card

Top surface is covered with protective polyimide layer, so very little we can see here too.

Small web-camera sensor chip

Marked as NC496 this is compact low resolution sensor. It’s much easier to photograph thanks to easy to remove glass window on ceramic package.

We can see some cool colored masks and resistors around pads. This chip is old Intel CS430 webcam with 640×480 resolution, manufactured around 2000-2001 year.

Above images captured with 200x magnification and DIC mode.

Same photo with normal bright-field mode without DIC:

Sensor pixels, perhaps with microlenses.

Calibration marks?

Intel Pentium III processor die

I’ve sanded die surface with 800 grit sandpaper to get protective layers and contact pads out of the way.

x500 magnification image shows some squares on inner layers of silicon.

Analog Devices AD7705 IC

AD7705 is low-voltage low-power 16-bit Sigma-Delta ADC with two fully differential inputs. It has a programmable gain block, signal buffer and serial interface for communication with host system.

Masks designed around year 2002. x50 magnification:

x200 magnification:

Same area with DIC mode:

x500 magnification with DIC:

x1000 magnification:

x1500 magnification:

APEX PA07 high power amplifier

This PA07 operational amplifier in TO-3 package has FET input and rated for supply voltages ±50 V and currents ±5 A, while keeping bias current under 50 pA and input capacitance 4 pF.

Opamp built with rather simple transistor and diode blocks with some passives embedded on BeO substrate and few 0606 sized capacitors.

Some film resistors are laser trimmed to precise values.

Input FETs are located on same die with seven process layers. Marking LS and 840 kinda suggests that it might be a Linear Systems LS840 dual JFET.

Focus-stacked image of larger transistor structure, with clearly visible squares around.

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