Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > sci.electronics.design > #454265

Re: OpAmp design - from theory to practice

Show all headers | View raw

On 2017-03-30 11:25, Gerhard Hoffmann wrote:
> Am 30.03.2017 um 16:16 schrieb Francesco Zappon:
>> On Thursday, 30 March 2017 14:37:21 UTC+2, Gerhard Hoffmann  wrote:
>
>> I will give a general answer valid also for the others that commented
>> on radiation hardness: we are operating with a 7 TeV beam of protons
>> (you might guess where I am working, at this point :D) and the
>> radiation areas are *very* harsh. This is not a problem that can be
>> solved just by shielding or some smart tricks (but we are diverging
>> from my question).
>>
>> People way smarter than me tell me that no FPGA can withstand that
>> kind of radiation for a reasonably long amount of time.
>>
>> The comment on the FPGA was just meant to say that I cannot mount in
>> the proximity of the chip I am designing an FPGA to control it.
>> Nothing more than that; you are right when you say that a CFC and an
>> FPGA have nothing to do with each other :)
>
> I assume then that you are abt. 2 or 3 hours by car from me in the
> south/western direction.
>
> Yes, if the FPGA gets warm from the radiation, that won't work. :-)
> But good enough for space probes or devices on the ISS. After all,
> there live some people. SEUs happen there, and it's bad if you lose
> the counter that has yourtime/position in orbit.
>
> But it surprised me that even robust things like voltage
> regulators are affected.
>

Even space-rated ones?

http://www.ti.com/general/docs/lit/getliterature.tsp?baseLiteratureNumber=slyt532d

http://www.st.com/content/st_com/en/products/aerospace-and-defense-products/space-products/rad-hard-pwm-controllers.html?querycriteria=productId=SC1548

http://www.linear.com/parametric/Space_Qualified_Linear_Regulators
http://www.linear.com/parametric/Space_Qualified_Switching_Regulators

I found the old uA723 to be of cast-iron behavior in nasty environments 
but I don't know about its formal radiation tolerance.

-- 
Regards, Joerg

http://www.analogconsultants.com/

Back to sci.electronics.design | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

OpAmp design - from theory to practice Francesco Zappon <cescozep@gmail.com> - 2017-03-29 07:55 -0700
  Re: OpAmp design - from theory to practice Tim Wescott <tim@seemywebsite.com> - 2017-03-29 11:51 -0500
  Re: OpAmp design - from theory to practice Tim Wescott <tim@seemywebsite.com> - 2017-03-29 11:53 -0500
    Re: OpAmp design - from theory to practice Francesco Zappon <cescozep@gmail.com> - 2017-03-30 01:02 -0700
      Re: OpAmp design - from theory to practice Martin Brown <'''newspam'''@nezumi.demon.co.uk> - 2017-03-30 10:54 +0100
        Re: OpAmp design - from theory to practice sroberts6328@gmail.com - 2017-03-30 05:25 -0700
      Re: OpAmp design - from theory to practice Gerhard Hoffmann <ghf@hoffmann-hochfrequenz.de> - 2017-03-30 14:37 +0200
        Re: OpAmp design - from theory to practice Francesco Zappon <cescozep@gmail.com> - 2017-03-30 07:16 -0700
          Re: OpAmp design - from theory to practice Gerhard Hoffmann <ghf@hoffmann-hochfrequenz.de> - 2017-03-30 20:25 +0200
            Re: OpAmp design - from theory to practice bitrex <bitrex@de.lete.earthlink.net> - 2017-03-30 14:51 -0400
            Re: OpAmp design - from theory to practice Joerg <news@analogconsultants.com> - 2017-03-30 12:58 -0700
              Re: OpAmp design - from theory to practice pcdhobbs@gmail.com - 2017-03-30 13:25 -0700
              Re: OpAmp design - from theory to practice Gerhard Hoffmann <ghf@hoffmann-hochfrequenz.de> - 2017-03-30 23:55 +0200
                Re: OpAmp design - from theory to practice Joerg <news@analogconsultants.com> - 2017-03-30 16:43 -0700
          Re: OpAmp design - from theory to practice George Herold <gherold@teachspin.com> - 2017-03-30 11:43 -0700
            Re: OpAmp design - from theory to practice Francesco Zappon <cescozep@gmail.com> - 2017-03-30 15:02 -0700
            Re: OpAmp design - from theory to practice Jeroen Belleman <jeroen@nospam.please> - 2017-03-31 10:20 +0200
      Re: OpAmp design - from theory to practice Tim Wescott <tim@seemywebsite.com> - 2017-03-30 12:14 -0500
        Re: OpAmp design - from theory to practice Francesco Zappon <cescozep@gmail.com> - 2017-03-30 15:05 -0700
  Re: OpAmp design - from theory to practice Joerg <news@analogconsultants.com> - 2017-03-30 10:45 -0700
    Re: OpAmp design - from theory to practice JM <dontreplytothis173@gmail.com> - 2017-03-30 19:32 +0100
      Re: OpAmp design - from theory to practice Joerg <news@analogconsultants.com> - 2017-03-30 12:47 -0700
        Re: OpAmp design - from theory to practice Francesco Zappon <cescozep@gmail.com> - 2017-03-30 15:16 -0700
          Re: OpAmp design - from theory to practice George Herold <gherold@teachspin.com> - 2017-03-30 16:11 -0700
          Re: OpAmp design - from theory to practice Joerg <news@analogconsultants.com> - 2017-03-30 16:57 -0700

csiph-web