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luck09
Joined: 07 Nov 2009
Posts: 2
Location: US
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 07 Nov 2009 0:56 Function generator with microsecond precision, >30 volt |
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Hi all,
I am looking for a good circuit, which can create an arbitrary wave form with microsec precision, and the maximum peak voltage should be 40-50 volt. For arbitrary wave form, I think it must have an interface to PC. Could you give a guide on this problem?
Thank you so much!
PS: Now I have a Agilent 33120A 15MHz, but it can not reach out of 10volts. Should I amplify it? and which schematic is a good one?
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dian
Joined: 16 Apr 2006
Posts: 41
Helped: 7
Location: Indonesia
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07 Nov 2009 13:47 Function generator with microsecond precision, >30 volt |
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| How if you use DDS chips and make some amplification to match your voltage level
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FvM
Joined: 22 Jan 2008
Posts: 5154
Helped: 767
Location: Bochum, Germany
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07 Nov 2009 14:12 Function generator with microsecond precision, >30 volt |
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Using a commercial HV/power OP seems to be the most easy solution. See
http://apex.cirrus.com
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luck09
Joined: 07 Nov 2009
Posts: 2
Location: US
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18 Nov 2009 22:20 Re: Function generator with microsecond precision, >30 vo |
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Thank you very much. I think your solution is the best.
I want to ask another question
http://datasheet.digchip.com/096/096-51260-MP400.pdf
In the above datasheet, I see that the OpAmp has 350 V/μS Slew Rate (very high) but a 200 kHz Power Bandwidth (not very high). As I think, when Slew Rate is high, system has fast response to input, therefore Bandwidth is also high. But I think it's not really true in this case. (I am not sure of having a clear understanding of Slew Rate and bandwidth here)
My application requires pulses in microsecond. Therefore, the frequency should be in MHz, I think. So, in this case, can MP400 be used for my application?
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18 Nov 2009 22:20 Ads |
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FvM
Joined: 22 Jan 2008
Posts: 5154
Helped: 767
Location: Bochum, Germany
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19 Nov 2009 0:23 Function generator with microsecond precision, >30 volt |
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| 350 V/μS isn't a high slew rate with 350 V output. You have to specify both, slew rate and bandwidth.
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