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On Sun, Feb 23, 2025 at 07:41 AM, john23 wrote:

Hello , I have a single ended PID and a vccs driver (differential )

Not enough information.

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Depending on the differential input circuit, and on its CMRR, it may accept single-ended inputs directly.? Apply signal and ground to the differential input pins.

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There are ways to actually convert a single-ended signal into a differential pair, should that be necessary.? A transformer is one pretty good way, but it is AC only.? A simple inverter is another.? You can get more fancy about them, but these are simplest.

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Since your "diff" input circuit drives a transformer primary, it probably has excellent CMRR.

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Andy

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Hello Andy,In the attached folder there is the united circuit where the PID and the driver I chose.

I grounded one of the input legs of the differential driver.

The driver is desscribed in the link.

You said that "? A transformer is one pretty good way, but it is AC only.? A simple inverter is another"

https://www.analog.com/cn/resources/technical-articles/adsl-line-driver-receiver-design-guide-part-two.html

On Tue, Feb 25, 2025 at 07:34 AM, john23 wrote:

You said that "? A transformer is one pretty good way, but it is AC only.? A simple inverter is another"

My driver is suppose to pass a PID controller behavior. What device you reccomend to connect the two?

I think you can figure that out.

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Andy

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