DIY circuit design using MOSIS

DIY circuit design using MOSIS

Jeff of MightyOhm has a nice writeup about Scot Satre, who in 2004 achieved his dream of designing and producing his own application specific integrated circuit (ASIC). Instead of learning how to fabricate transistors himself, he used a service called MOSIS. MOSIS works by splitting the set-up cost of making integrated circuits among many people, by combining all of their designs onto a single wafter. This is similar to what sites like BatchPCB do for circuit board production. While I don’t predict that individuals will start flocking to make their own chips (it still costs tens of thousands of dollars), it is in the range of what dedicated groups could probably afford to do.

I actually got to use this service once, as part of an honors electronics class in college. We designed a test chip and sent it away for fabrication, however I graduated before it came back. I wonder if it worked! [via mightyohm]

6 thoughts on “DIY circuit design using MOSIS

  1. Brian says:

    I took a class in VLSI design at Vanderbilt the spring of 1990. It was manufactured by MOSIS. The chip was a slot machine simulator that had a bank counter, three 7 segment display reels and a setting where you can set how much money the house takes in. The chip worked except for 1 segment of one of the reels. I guess I missed something in the design. It was designed using some sort of free software on SUN workstations.

    1. Matt Mets says:

      Oh, awesome! We used definitely-not-free Cadence software to design ours. Sounds like a great class.

  2. mightyohm says:

    Matt and Brian,

    I never got the chance to design a VLSI chip in college, but I wish I had. It sounds like a lot of fun!

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