Hi,

I came across two unknown (to me) op-amps symbol.
Can someone please help me understand what are the terminals and how they are constructed?
I am talking about OP 6 and the right one (image C)


Thanks,
Tomer

 

This is without any context. Can you give us some clues about the source of the diagrams?

 

If a Schematic comes with no associated explanation of it's application, look elsewhere.

There are no Laws governing any Schematic-Symbols that must be conformed to,
but there are general "conventions" that most people try to follow.
But, of course, there are some people who think they are "special",
and rather than attempting to make the Schematic as easy to follow as possible,
they want to add as much randomity as possible,
probably to make themselves look smarter, or to justify a paycheck.

The world is a strange place.
.
.
.

 

Thank you both.

It comes from this article if it helps.
https://www.mdpi.com/2076-3417/12/22/11334

Any ideas?

 

Thank you both.

It comes from this article if it helps.
https://www.mdpi.com/2076-3417/12/22/11334

Any ideas?

Yes, that does help. Those illustrations are not schematic circuit diagrams. They are specialized diagrams created to help to show the process explained in the documentation. As such, they are not required to follow any pre-defined convention.

 

It looks like an op-amp with the inverting and non inverting inputs being isolated current loops. Really an interesting concept and probably an assembly , not available as an IC device. After reading the abstract it seems that I was close. It is actually a SYSTEM, meaning it is much more than a component. It is the whole subject of a technical paper.

 

The op-amp symbol you refer to is an op-amp with 'differential outputs' such as LTC6362 amongst many.

https://www.analog.com/media/en/technical-documentation/data-sheets/6362fa.pdf

 

As those input sections were shown with boxes indication of isolation they could also have been current loop inputs. A configuration I was not familiar with.

 

The op-amp symbol you refer to is an op-amp with 'differential outputs' such as LTC6362 amongst many.

https://www.analog.com/media/en/technical-documentation/data-sheets/6362fa.pdf

Some people call them differential line drivers.
circuit B is what we call an instrumentation amp. like an INA851

 

OP6 is a differential op amp. I am using LMH6551 to drive a differential input ADC.

 

Thank you everyone,

This has been very helpful.