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Hello,
I am looking to make a simple subtractor for signals below 1 MHz for four channels. is there a chip that can do that that is more compact than a regular quad op amp with 8 resistors where all the resistors are integrated on chip? I inserted a picture from the LMH6704 which is the general idea. I would need 3.3V Rail-to-rail.
Is there an easy way to filter my requirements in the parametric search at www.ti.com/.../products.html
Frank
Hello Frank,
You may also want to look into our difference amp options:
https://www.ti.com/amplifier-circuit/difference/products.html
Best,
Hasan Babiker
Hey Michael,
Looks like the requirements are only up to 1MHz in this case.
Best,
Hasan Babiker
They seem to go up to 5MHz bandwidth according to the parametric search... although I haven't delved into the parts to confirm this.
Best,
Hasan Babiker
you are correct, but the search does not report their speed, they do top out at 18V/usec slew rate in the INA597 which is 2MHz.
Hey Michael,
Good point, there would definitely be some slew limitations at 3.3V & 1MHz.
In regards to your question on the parametric search Frank, you can use the "Fixed Gain/Buffer" option under the architecture tab.
Best,
Hasan Babiker