Posted by
Mark Cannell-2 on
URL: http://confocal-microscopy-list.275.s1.nabble.com/5-to-10V-level-shifter-tp7592213p7592220.html
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Maybe but it apparently needs a slew rate > 10V/us into what may be a 50 ohm impedance. This is RF circuitry. Perhaps the manufacturer can give some more details as it's hard to define what's needed on the basis of the supplied info. IMHO
Cheers
Mark B. Cannell. Ph.D. FRSNZ FISHR
Department of Physiology, Pharmacology & Neuroscience
School of Medical Sciences
University Walk
Bristol BS8 1TD
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On 9/05/21, 10:36 AM, "Confocal Microscopy List on behalf of Nino Karpf" <
[hidden email] on behalf of
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Dear Petro,
Would an amplifier solve your problem? If you buy an electronic amplifier that amplifies your driving voltage 2-3 times (from 5V to 10V or higher) you should be able to drive your pockels cell. Unless I’m thinking too easy here. You can buy suitable amplifiers from e.g. Minicircuits.
Best,
Nino
Von meinem iPhone gesendet
> Am 09.05.2021 um 10:44 schrieb Khoroshyy Petro <
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>
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>
> Thanks.
> I will have a look on the shifter.
> I am a bit lost by analog control?
> Do you mean setting up the HT by control voltage?
> Thanks.
> Petro.
>
>> On Sat, May 8, 2021, 23:12 Benjamin Smith <
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>> wrote:
>>
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>>
>> There are submicrosecond level shifters such as this:
>>
https://www.onsemi.com/pdf/datasheet/mc14504b-d.pdf, and if the impedance
>> was high enough on the input you could even use a high side driver for even
>> faster switching speeds. However, if you are driving a Pockels cell (which
>> normally requires analog instead of digital control) I would just use an
>> op-amp voltage multiplier. A unity gain stable op-amp would be the easiest
>> bet, and one like this would be plenty fast:
>>
>>
https://www.digikey.com/en/products/detail/analog-devices-inc/LT6200CS6-TRMPBF/1115933 >>
>> On Sat, May 8, 2021 at 12:58 PM Khoroshyy Petro <
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>> wrote:
>>
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>>>
>>> Hi everybody.
>>>
>>> This question is not directly about confocal microscopy but, and might be
>>> better addressed on some electrical engineering forum. Bit i believe
>> there
>>> is someone who can guide me in the right direction.
>>> I need to drive a Pockel cell driver with 10 V pulses, but available
>> pulse
>>> generator has max 5V output. I need pulses with submicrosecond rising
>> time.
>>> I have searched for level shifters chips with needed bandwidth and
>>> impedance but all of what I found work up to 5.5 volts.
>>> I wonder if someone can recommend some solution for the problem or give a
>>> hint.
>>> Thanks.
>>> Petro.
>>>
>>
>>
>> --
>> Benjamin E. Smith, Ph. D.
>> Imaging Specialist, Vision Science
>> University of California, Berkeley
>> 195 Weill Hall
>> Berkeley, CA 94720-3200
>> Tel (510) 642-9712
>> Fax (510) 643-6791
>> e-mail:
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>>
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