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zoujunjx
Joined: 13 May 2004
Posts: 52
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 16 Sep 2004 15:05 testbench for OP AMP |
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| i need a standard testbench(schematic) for OP AMP, anyone can give me some suggestion!
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djalli
Joined: 10 Nov 2001
Posts: 887
Helped: 15
Location: 1600 Pennsylvania Avenue, Washington DC 20500
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| 16 Sep 2004 20:19 testbench for OP AMP |
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Look analog.com they have something. How they call them: opamp evaluation boards I think.
See their application notes which have schematics in them.
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yjkwon57
Joined: 31 Jul 2004
Posts: 221
Helped: 21
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| 17 Sep 2004 15:13 Re: testbench for OP AMP |
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| You will need well compensated OP amps other than Device Under Test. And, small voltages such as input offset voltage will be amplified to measure them easily. Small currents such as input offset currents will be directed to flow a large known value of resistance to measure easily, i.e., current is calculated from the voltage drop across the resistor. And, you will need a timer and two analog comparators to measure some timing parameters.
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khafaji
Joined: 28 Sep 2004
Posts: 19
Helped: 1
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| 08 Oct 2004 23:46 testbench for OP AMP |
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| In National Semi. App notes you can find very usefull documents about opamps
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tochaHCM
Joined: 29 Sep 2004
Posts: 97
Helped: 1
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| 09 Oct 2004 0:17 Re: testbench for OP AMP |
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This site give you some idea to start:
http://www.sound.westhost.com/project41.htm
This site help show a go /no go tester
http://www.tangentsoft.net/elec/opamp-tester.html
The most important thing is to understand the definition of AC and DC paramter of of OP-amp than you will understand how to set up the test bench. This lengthy document will help you:
http://focus.ti.com/lit/an/sboa092a/sboa092a.pdf
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mopengfei
Joined: 10 Aug 2004
Posts: 41
Location: hangzhou of china
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| 09 Oct 2004 3:45 testbench for OP AMP |
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may I ask a foolish question/
do OP AMP mean "operation amplifer"
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ME
Joined: 14 Mar 2002
Posts: 1771
Helped: 11
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| 09 Oct 2004 3:53 Re: testbench for OP AMP |
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| mopengfei wrote: |
may I ask a foolish question/
do OP AMP mean "operation amplifer" |
Yes it does.
OPAMP is often used as abbreviation for operational amplifier.
You could just have used google instead of asking, it would have been easier!
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