ZeptoBars - RSS feed http://zeptobars.com/en/ Microelectronics. Die-shots. Artificial intelligence. Lasers. en-us Tue, 10 Jun 2006 04:00:00 GMT Sat, 16 Feb 19 07:58:58 +0300 webmaster@zeptobars.com 120 10 <![CDATA[PIC/Atmel ATtiny4 : weekend die-shot]]> http://zeptobars.com/en/read/atmel-tiny4-attiny4-microcontroller PIC/Atmel ATTiny4 - one of the smallest AVR microcontrollers, with 4KiB Flash, 256B EEPROM, 256B SRAM and just 6 pins.
Die size 1368x926 µm.

Fri, 01 Feb 19 13:49:07 +0300
<![CDATA[Holtek HT7133-1 - 30mA LDO : weekend die-shot]]> http://zeptobars.com/en/read/HT71xx-1-Holtek-HT7133-1-30mA-LDO-CMOS-trim Holtek HT7133-1 is a tiny CMOS LDO able to deliver 30mA. 5-bit fuses on the left side is likely for output voltage trim (3% specified Vout tolerance), some of the voltage customization has to be done via masks. Die size 499x490 µm.

Closer look at fuses:

Fri, 21 Dec 18 10:22:44 +0300
<![CDATA["Luch" quartz wristwatch IC : weekend die-shot]]> http://zeptobars.com/en/read/Luch-quartz-wristwatch-IC-at-sc-tuning-fork

After metalization etch:

New let's take a look at quartz - tuning fork cut at XY plane:


Enhance 224-176:

Enhance 34-36:

You can see here marks from laser frequency tuning and pyramids in Z-direction, probably due to etching anisotropy.

You can see them overclocked here. ]]>
Thu, 13 Dec 18 03:28:33 +0300
<![CDATA[PIC24EP32GP202 - microcontroller with opamps : weekend die-shot]]> http://zeptobars.com/en/read/PIC24EP32GP202-PIC24-microcontroller-opamp-adc
Mon, 22 Oct 18 14:29:24 +0300
<![CDATA[Freescale/NXP MC56F82323 - 50MIPS DSP µC : weekend die-shot]]> http://zeptobars.com/en/read/Freescale-NXP-MC56F82323-DSC Freescale/NXP MC56F82323 is a 50MIPS DSC (DSP-capable microcontroller).

Thu, 11 Oct 18 07:30:41 +0300
<![CDATA[Ti TPS62321 - 3-MHz Step-Down DCDC : weekend die-shot]]> http://zeptobars.com/en/read/Ti-TPS62321-3-MHz-Step-Down-Chip-Scale-CSP Texas Instruments TPS62321 is a 3-MHz Step-Down DCDC converter with internal MOSFET and synchronous rectification.
Look at this staggering number of test pads!
Die size 1983x981 µm.

Sat, 29 Sep 18 23:59:42 +0300
<![CDATA[Toshiba 2SC3421 - NPN audio BJT : weekend die-shot]]> http://zeptobars.com/en/read/Toshiba-2SC3421-NPN-audio-BJT Toshiba 2SC3421 is a 120V 1A NPN BJT for audio applications.
Die size 1053x1055 µm.

Mon, 24 Sep 18 04:19:15 +0300
<![CDATA[Microchip MCP6V27 - auto-zero opamp : weekend die-shot]]> http://zeptobars.com/en/read/Microchip-MCP6V27-opamp-auto-zero-input-offset MCP6V27 is a CMOS opamp offering <2 µV input offset voltage. Datasheet have nice description of it's auto-zero operation principle (Page 21+).

Sun, 16 Sep 18 04:36:51 +0300
<![CDATA[AD MAT02 - supermatched BJT - real vs fake : weekend die-shot]]> http://zeptobars.com/en/read/MAT02-low-noise-supermatched-BJT-Analog-Devices LM394 gone first. Manufacturing of MAT02 stopped around 2010. No surprise it is hard to come by a real one from old stock.
Modern alternatives for low noise supermatched BJTs are Analog Devices MAT12 and the like.

Genuine one first (both Analog MAT02CH and MAT02EH are the same). Die size 1506x1407 µm. Image matches photo in datasheet.
PMI logo is Precision Monolithics, Inc, which was bought by Analog Devices back in 1990.

Fake ones (both MAT02EH and MAT02AH) looks more like LM394, but with very rough metalization. Die size 1342x1443 µm:

Sat, 08 Sep 18 22:57:01 +0300
<![CDATA[National Semiconductor LM3909 - analog led flasher : weekend die-shot]]> http://zeptobars.com/en/read/lm3909-led-flasher-national-semiconductor CMOS led blinkers we've seen in the past. Die size 935x733 µm.

Sun, 02 Sep 18 00:36:22 +0300