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Fake audio opamp - Ti NE5532 remarked as AD OP275 : weekend die-shot
This was a weird one. After de-capping Analog Devices OP275 from audio opamp assortment kit I was surprised to see familiar Ti NE5532 die. As it was quite unusual, I de-capped original Ti NE5532...
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Ti LMC555CMX - CMOS 555 : weekend die-shot
This Texas Instruments LMC555CMX is almost identical to National Semiconductor LMC555.Die size 1136x1085 µm.
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MN3207 - 1024 stage analog delay line (BBD) : weekend die-shot
MN3207 is an BBD - bucket-brigade device (predecessor of CCD) with 1024 stages used as analog delay line. Die size 2770x3210 µm.
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MN3102 - RC oscillator and 2-phase BBD driver : weekend die-shot
MN3102 is a dedicated IC which generates a 2-phase low-impedance clock which frequency is set by external RC components. It is designed to drive MN3207 and similar BBD's (bucket-brigade device).Die...
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LM747CN - dual general purpose opamp : weekend die-shot
This dual opamp LM747CN had datecode 8852. Manufacturer is unclear. While some 747 designs mention that "two amplifiers share a common bias network" - here we see 2 independent identical mirrored...
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Raytheon RC4558N - general-purpose opamp : weekend die-shot
Raytheon RC4558N is a dual general-purpose opamp similar to μA741 with a slight taste of freedom. Packaged in plastic DIP. Die size 1123x1094 µm.
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Harris CD4098BE - dual monostable multivibrator : weekend die-shot
Die size 2421x1939 µm. Harris Semiconductor was acquired by Texas Instruments.
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RCA CD4029AE - presettable binary/BCD counter : weekend die-shot
Die size 2330x2156 µm.
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Tesla MA7805 - 5V 2A voltage regulator : weekend die-shot
It's not a car. It is a voltage regulator. Die size 2344x2243 µm. You can read more about Tesla (Czechoslovak electronics company) here.
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National MC74HC182N - ALU Carry Look-ahead : weekend die-shot
Die size 2063x1635 µm. Used back in the days when you built CPU's from TTL chips. Some still do it though : https://www.homebrewcpuring.org/ I hope one day I will have enough time to build one... With...
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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.
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Infineon BFP540FESD - 30Ghz fT NPN BJT : weekend die-shot
Not often we see multiple metal layers in BJT's. Die size 246x223 µm.
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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. After etching metal:
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