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OP Amp output Impedance - RF Cafe Forums
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David-S
Post subject: OP Amp output Impedance
Unread postPosted:
Wed Feb 16, 2005 1:58 am
Hi,
I want to ask if it is correct
to measure Op-Amp output impedance by measuring S22 with Network Analyzer
Thank
David-S
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Brad
Post subject:
Unread postPosted: Wed Feb 16, 2005 8:38 am
The answer is yes,
but just be sure you do not exceed the DC voltage input level to the
network analyzer.
Brad
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j_almira
Post subject:
Unread postPosted: Tue Apr 05, 2005 1:13 am
Hi,
I agree with Brad. just wanna add, probably it's safer
to use attenuator at the port 2 of network analyzer.
Regards,
Jean
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Guest
Post subject: Output impedance
Unread postPosted: Fri Apr 08, 2005 12:10 pm
The assumption
made in the previous responses is that you want the closed-loop output
impedance (of the entire circuit), not the intrinsic output impedance
of the operational amplifier (by itself).
Is this a correct assumption?
Good Luck!
Posted
11/12/2012
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