how to interface a differential op-amp to a single ended output
how to interface a differential op-amp to a single ended output
(OP)
I would like to have a regular op-amp (single ended) input driven via differential outputs from a differential op-amp. I assume this will be better than going to a single ended configuration right after the diff op-amp (typical configuration).
The question is how to best interface the ad8137 in differential mode to the lmh6619, and is there any need to impedance match or load the ad8137 for best signal integrity?
The input to the diff op-amp is a parallel resonant circuit, this configuration has a high Q. Is there a way to reduce the Q and therefore make it more stable?
The question is how to best interface the ad8137 in differential mode to the lmh6619, and is there any need to impedance match or load the ad8137 for best signal integrity?
The input to the diff op-amp is a parallel resonant circuit, this configuration has a high Q. Is there a way to reduce the Q and therefore make it more stable?





RE: how to interface a differential op-amp to a single ended output
So, just use a differential amplifier and connect directly. You only need four resistors for that and you can google for hundreds of diagrams.
Gunnar Englund
www.gke.org
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Half full - Half empty? I don't mind. It's what in it that counts.
RE: how to interface a differential op-amp to a single ended output
RE: how to interface a differential op-amp to a single ended output
now i am finding the LC networks is being unbalanced by the diff op-amp. do the diff op-amps have a high differential capacitance?
RE: how to interface a differential op-amp to a single ended output
Gunnar Englund
www.gke.org
--------------------------------------
Half full - Half empty? I don't mind. It's what in it that counts.
RE: how to interface a differential op-amp to a single ended output
RE: how to interface a differential op-amp to a single ended output
Your LC network is a parallel one. They have high impedance at resonance.
Gunnar Englund
www.gke.org
--------------------------------------
Half full - Half empty? I don't mind. It's what in it that counts.
RE: how to interface a differential op-amp to a single ended output
the LC network should be impedance matched than? how do i calculate the source impedance of the LC network?
RE: how to interface a differential op-amp to a single ended output
Gunnar Englund
www.gke.org
--------------------------------------
Half full - Half empty? I don't mind. It's what in it that counts.
RE: how to interface a differential op-amp to a single ended output