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Motorola MC1553G - video amplifier : weekend die-shot Not an opamp. 35Mhz bandwidth, 52dB gain. Datecode 736. Schematics below. Die size1062x1062 µm.
ZEPTOBARS
Behind the scene of Zeptobars - 2020Q3 You might have noticed, that there were extremely few posts in the blog over the last months. Well, it was COVID-related, but in slightly unexpected way. BITFURY - SPECIALIZED BITCOIN PROCESSOR : WEEKEND DIE-SHOT Bitfury - specialized Bitcoin processor : weekend die-shot Recently we've received sample chips from engineering run of Bitfury - specialized Bitcoin processor. HOW TO SUPPORT ZEPTOBARS : ZEPTOBARS How to support Zeptobars Our Motto is "We love microchips - that's why we boil them in acid" - we love what we do regardless on whether we get paid, and results are kept open source under permissive "CC BY 3.0" license to benefit as many as possible.ZEPTOBARS
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 (directly from their e-shop) to confirm that older photo was indeed from genuine part, as well as one more fake OP275 to confirm thatZEPTOBARS
K553UD1A : weekend die-shot K553UD1A is one of the first Soviet integrated operational amplifiers. This one was manufactured in June 1978. It is a functional analog of µa709, though, it is not it'sper-layer copy:
GD32F103CBT6
GD32F103CBT6 - Cortex-M3 with serial flash : weekend die-shot Giga Devices GD32F103CBT6 really surprised us: Giga Devices was a serial flash manufacturer for quite some time. A LOOK INSIDE RUSSIAN 28NM MIPS CPU A look inside Russian 28nm MIPS CPU - Baikal-T1 Many of you might have heard about Baikal-T1 - Russian implementation of dual core Imagination Technologies MIPS P5600 32 r5 with on-board 10Gb Ethernet. Baikal was the first to implement P5600 core in silicon. CPUs itself (had to go through 4 pieces to get a good die):NORDIC NRF24L01+
Nordic NRF24L01+ - real vs fake : weekend die-shot Nordic NRF24L01+ (NRF24L01P) is a very popular 2.4Ghz transceiver used in countlessconsumer products.
FAKE AUDIOPHILE OPAMPS: OPA627 (AD744?!) : ZEPTOBARS Fake audiophile opamps: OPA627 (AD744?!) Walking around ebay I noticed insanely cheap OPA627's. It's rather old, popular and high-quality opamp, often used in audiophile gear. ZEPTOBARSQUAD JFET OPAMPPOWER INTEGRATIONS INN2605KHISTORYBF862CONTACTUS
Motorola MC1553G - video amplifier : weekend die-shot Not an opamp. 35Mhz bandwidth, 52dB gain. Datecode 736. Schematics below. Die size1062x1062 µm.
ZEPTOBARS
Behind the scene of Zeptobars - 2020Q3 You might have noticed, that there were extremely few posts in the blog over the last months. Well, it was COVID-related, but in slightly unexpected way. BITFURY - SPECIALIZED BITCOIN PROCESSOR : WEEKEND DIE-SHOT Bitfury - specialized Bitcoin processor : weekend die-shot Recently we've received sample chips from engineering run of Bitfury - specialized Bitcoin processor. HOW TO SUPPORT ZEPTOBARS : ZEPTOBARS How to support Zeptobars Our Motto is "We love microchips - that's why we boil them in acid" - we love what we do regardless on whether we get paid, and results are kept open source under permissive "CC BY 3.0" license to benefit as many as possible.ZEPTOBARS
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 (directly from their e-shop) to confirm that older photo was indeed from genuine part, as well as one more fake OP275 to confirm thatZEPTOBARS
K553UD1A : weekend die-shot K553UD1A is one of the first Soviet integrated operational amplifiers. This one was manufactured in June 1978. It is a functional analog of µa709, though, it is not it'sper-layer copy:
GD32F103CBT6
GD32F103CBT6 - Cortex-M3 with serial flash : weekend die-shot Giga Devices GD32F103CBT6 really surprised us: Giga Devices was a serial flash manufacturer for quite some time. A LOOK INSIDE RUSSIAN 28NM MIPS CPU A look inside Russian 28nm MIPS CPU - Baikal-T1 Many of you might have heard about Baikal-T1 - Russian implementation of dual core Imagination Technologies MIPS P5600 32 r5 with on-board 10Gb Ethernet. Baikal was the first to implement P5600 core in silicon. CPUs itself (had to go through 4 pieces to get a good die):NORDIC NRF24L01+
Nordic NRF24L01+ - real vs fake : weekend die-shot Nordic NRF24L01+ (NRF24L01P) is a very popular 2.4Ghz transceiver used in countlessconsumer products.
FAKE AUDIOPHILE OPAMPS: OPA627 (AD744?!) : ZEPTOBARS Fake audiophile opamps: OPA627 (AD744?!) Walking around ebay I noticed insanely cheap OPA627's. It's rather old, popular and high-quality opamp, often used in audiophile gear.HISTORY : ZEPTOBARS
History Zeptobars started in 2012, when I was working on "homemade" ICs. Before trying to design or make your own it is beneficial to lookat work of others.
ZEPTOBARS
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.ZEPTOBARS
Ti SE555P - 1996 version in glass-filled DIP package: weekend die-shot Some time ago we've seen Ti's 555 from 2006.This is an older one, from 1996. Die here is slightly larger, transistors are square vs round and no pads in the middle of the chip.ZEPTOBARS
K565RU5 : Weekend die-shot K565RU5 (pin-compatible to 4164 DRAM chip) - 64 Kib DRAM chip, heart of most of amateur computers made in late soviet times and early 90's. There was also RU7 chip (256 Kib) but it was hard to buy. Die size 5645x2612 µm. TI NE5532 - REAL VS FAKE : WEEKEND DIE-SHOT : ZEPTOBARS Ti NE5532 - real vs fake : weekend die-shot We have spotted yet another real/fake pair of very common microchip. This time it is Ti NE5532. NE5532 is a very fine opamp which will do just fine in 99% ofaudio applications.
ZEPTOBARS
UMC UA6538 - Dendy (NES compatible) PPU : weekend die-shot UMC UA6538 was a "GPU" (called PPU - "picture processing unit" at the time) of a Dendy, NES-compatible console which was very popular in Russia untillate 90's.
FTDI FT232RL: REAL VS FAKE : ZEPTOBARS FTDI FT232RL: real vs fake For quite some time when you buy FTDI FT232RL chips from shady suppliers you have a good chance of getting mysteriously buggy chip which only works with drivers 2.08.14 orearlier.
ZEPTOBARS
A look inside Russian 28nm MIPS CPU - Baikal-T1 Many of you might have heard about Baikal-T1 - Russian implementation of dual core Imagination Technologies MIPS P5600 32 r5 with on-board 10Gb Ethernet. Baikal was the first to implement P5600 core in silicon. CPUs itself (had to go through 4 pieces to get a good die): TI NE555 - REAL VS FAKE : WEEKEND DIE-SHOT : ZEPTOBARS Ti NE555 - real vs fake : weekend die-shot It is easy to understand reasons to fake 80$ "audiophile-grade" opamp.But why would someone fake one of the cheapest microchips in the world?MOTOROLA MC1553G
Motorola MC1553G - video amplifier : weekend die-shot Not an opamp. 35Mhz bandwidth, 52dB gain. Datecode 736. Schematics below. Die size1062x1062 µm.
ZEPTOBARSQUAD JFET OPAMPPOWER INTEGRATIONS INN2605KHISTORYBF862CONTACTUS
1KT901 is a 5-channel analog MOSFET commutator.Details
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