A publishable chip design...

My chip design customers are almost always on the leading edge of their particular technology.

As such, publishing the design I did for them would divulge their proprietary information to competitors; and, of course, I am bound by NDA's to keep that information confidential.

But here is an eleven year old design that can now be freely published... typical of my designs in an advanced BiCMOS technology...

As you can see, I don't deal in the simple stuff >:-} ...Jim Thompson

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| James E.Thompson                                 |    mens     | 
| Analog Innovations                               |     et      | 
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Jim Thompson
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Just a schematic isn't really a complete description of an IC design, especially when we don't have the process book and can't look up the device characteristics.

How about some discussion of what it is, what it does, and how? Start with the high points.

(That can be a start on your book. My second edition contains sections lifted almost verbatim from some of my SED posts--explaining something to somebody is the best way to set your thoughts in order about it, IME.)

Cheers

Phil Hobbs

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Dr Philip C D Hobbs 
Principal Consultant 
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Reply to
Phil Hobbs

Sheeesh! Do you need a process book to know what an NPN or an MOS device does ?

I thought all that was required here on S.E.D was posting a schematic without any defense, just claiming how wonderful it is ?>:-}

However, the posted schematic is a multi-channel SONAR system. Quite sophisticated, with tunable filters, voltage-variable amplifiers and all kinds of temperature compensation.

I'll write something up. It'll be awhile, getting quite busy again. I'll post the temperature compensation stuff first... easy for me... and it'll keep the plebes occupied for months.

...Jim Thompson

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| James E.Thompson                                 |    mens     | 
| Analog Innovations                               |     et      | 
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Reply to
Jim Thompson

Right. What would the world do without you.

Reply to
miso

I don't know. The world is obviously doing without you.

Customers come to me to keep their technology private and to get a jump on the competition.

You certainly don't go to the majors, like ON-Semi, Fairchild, etc., to get a custom chip that has application in their markets. (*)

With me, you get you chip processed at a foundry that does nothing but foundry work... no competitive products.

(*) Though I have done custom designs for many of the majors as well...

Atmel AT&T California Micro Devices Fairchild Semiconductor (Larkin's beloved LVDS :-) Honeywell IntellaSYS IBM Microchip MicroRel Motorola ON Semiconductor Sanyo Silicon Graphics Silicon Systems Inc Synaptics ...Jim Thompson

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| James E.Thompson                                 |    mens     | 
| Analog Innovations                               |     et      | 
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Reply to
Jim Thompson

Are you ESL as well as annoying?

I never trust people who tell me how good they are. Nor do I trust people who tell me how hard they work. They are simply compensating for their actual lack of skills and hard work. If you have to tell someone you are good, you clearly aren't very good.

Reply to
miso

He should start his own newsgroup, alt.wonderful.jim.thompson. It should be moderated, so he can only allow himself to post there. Well, maybe John Fields once in a while.

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John Larkin                  Highland Technology Inc 
www.highlandtechnology.com   jlarkin at highlandtechnology dot com    
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John Larkin

My back hurts. I've been bowing towards Arizona for the last hour.

Reply to
miso

Do you think I care what you think?

I'm not telling people anything other than responding to cretins who imply I don't do designs, when I do MANY designs each year... all custom chips... device-level, no plunking off-the-shelf stuff onto a PCB per an appnote and calling it design :-) ...Jim Thompson

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| James E.Thompson                                 |    mens     | 
| Analog Innovations                               |     et      | 
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Jim Thompson

Sure you care, else you wouldn't reply. So hey, thanks for caring.

By the way, in chip design, you often plop down circuits you used before. Not necessarily the same layout, but often the same topology. Why I have used the long tail pair at least twice. Maybe thrice!

Reply to
miso

Nope. But I do care what others might decide from your derisive falsehoods.

Actually there are only four topologies that cover everything, and I use them repeatedly...

Source on the bottom Source on the top Source on the left Source on the right

Oooops! There are many more variants...

Emitter on the bottom Emitter on the top Emitter on the left Emitter on the right

Likewise for other components ;-) ...Jim Thompson

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| James E.Thompson                                 |    mens     | 
| Analog Innovations                               |     et      | 
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Reply to
Jim Thompson

Similar climate to Mecca.

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John Larkin                  Highland Technology Inc 
www.highlandtechnology.com   jlarkin at highlandtechnology dot com    
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Reply to
John Larkin

Gosh, Mr. Thompson, you're so wonderful--can I have your autograph, pretty please?

;)

Cheers

Phil Hobbs

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Dr Philip C D Hobbs 
Principal Consultant 
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Reply to
Phil Hobbs

What? You want a signed photograph ?>:-} ...Jim Thompson

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| James E.Thompson                                 |    mens     | 
| Analog Innovations                               |     et      | 
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Jim Thompson

Nah, that would turn all the milk sour. ;)

Cheers

Phil Hobbs

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Dr Philip C D Hobbs 
Principal Consultant 
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Phil Hobbs

[snip]

Just musing about milk. Now that we live in the boonies, we just drove by a giant dairy, thousands of cows. And I was musing how I used to ride the milk train to visit my Grandparents' Godwin farm. ...Jim Thompson

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| James E.Thompson                                 |    mens     | 
| Analog Innovations                               |     et      | 
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Reply to
Jim Thompson

Jim

That's a lot of capacitance to put on a chip. What percentage of the area was dominated by the caps?

Bob

Reply to
radams2000

Quit attacking Jim Thompson's modesty.

Reply to
Greegor

He hasn't got a lot of modesty to attack, though - to quote Churchill - he's got a lot to be modest about.

--
Bill Sloman, Sydney
Reply to
Bill Sloman

I hope you didn't get hurt patting yourself on the back! :-) Mikek

Reply to
amdx

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