Hey, Jim,
Have you worked with any high voltage analog IC processes? Like, say,
300 volts swing?I know that APEX used to have a horrible HV cmos process, maybe fabbed by AT&T or IBM or somebody improbable, but they use discretes now mostly.
-- John Larkin Highland Technology, Inc picosecond timing precision measurement jlarkin att highlandtechnology dott com http://www.highlandtechnology.com
I've worked with some X-Fab processes that have high voltage devices.
100V is the highest I've worked with.I'll thumb thru the process catalog and get back to you.
(As for APEX... I've recently done a lot of Spice modeling for them... you're right, everything is now discrete chips... except for some CFB-mode OpAmp I/C's) ...Jim Thompson
--
| James E.Thompson | mens |
| Analog Innovations | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| STV, Queen Creek, AZ 85142 Skype: skypeanalog | |
| Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |
It's what you learn, after you know it all, that counts.
Does Supertex still offer their process to external? They used to, I had a long discussion with them about a nice several hundred volt process. However, that was almost a decade ago and meantime they were acquired by Microchip.
Clare lists up to 1000V for their processes:
-- Regards, Joerg http://www.analogconsultants.com/
I don't know about Supertex... it's been quite awhile since I last talked to them. IIRC too many $$$$.
I did a chip design for Clare _many_ years ago... I'll check out their offerings.
HV certainly will certainly force you into a fancier package. ...Jim Thompson
--
| James E.Thompson | mens |
| Analog Innovations | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| STV, Queen Creek, AZ 85142 Skype: skypeanalog | |
| Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |
It's what you learn, after you know it all, that counts.
Couldn't easily discern from the fly sheets, so I sent an inquiry to a field engineer I know at X-Fab.
He's quite responsive, even though he's in Germany most of the time. Should have an answer in a day or two.
===> What kind of current handling at that voltage? ...Jim Thompson
--
| James E.Thompson | mens |
| Analog Innovations | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| STV, Queen Creek, AZ 85142 Skype: skypeanalog | |
| Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |
It's what you learn, after you know it all, that counts.
I guess my buddy was in Texas... instant response:
"We have three processes that currently can meet that voltage:
700 V, bulk). Additionally we have a fourth process with an extension in development that will be able to reach that voltage, XT018 (0.18John, what are your current-handling requirements? ...Jim Thompson
--
| James E.Thompson | mens |
| Analog Innovations | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| STV, Queen Creek, AZ 85142 Skype: skypeanalog | |
| Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |
It's what you learn, after you know it all, that counts.
LT makes this ~140V opamp LTC6090? could you put three of them in series? (We've got a tray or two of apex HV opamps if you want them. (too noisy for us.) )
George H
Low current, basically need to drive about 100 small capacitors from maybe -100 to +200 volts. I might ping you privately about dropping your name in a proposal. Long-shot.
-- John Larkin Highland Technology, Inc picosecond timing precision measurement jlarkin att highlandtechnology dott com http://www.highlandtechnology.com
I might use my totem-pole HV optoisolator circuit for a system demo, but the actual application would need to be a multi-channel custom IC.
-- John Larkin Highland Technology, Inc picosecond timing precision measurement jlarkin att highlandtechnology dott com http://www.highlandtechnology.com
Den fredag den 10. november 2017 kl. 02.23.25 UTC+1 skrev John Larkin:
On Thursday, November 9, 2017 at 5:31:54 PM UTC-8, Lasse Langwadt Christensen wrote: ...
That's a derivative of the HV252 I architected about 16 years ago with Supertex doing the design and fabrication. Part of the deal was that they had the rights to use the design themselves.
The original application was for driving the electrostatic MEMS mirror actuators in an optical switch
The 12 Meg Sichrome feedback resistors took up about 50% of the die area.
kevin
OK. I deal with lots of "long-shots" ;-) ...Jim Thompson
--
| James E.Thompson | mens |
| Analog Innovations | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| STV, Queen Creek, AZ 85142 Skype: skypeanalog | |
| Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |
It's what you learn, after you know it all, that counts.
That's cool. We need negative swing, but maybe we can bias up the other sides of the caps. The price is unreasonable for production, but it would be fine for the demos.
Thanks. I'll see if we can use it.
-- John Larkin Highland Technology, Inc lunatic fringe electronics
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