UAF42: Differential Input

Tansel Tulga Cinar

Prodigy 10 points

Part Number: UAF42
Other Parts Discussed in Thread: OPA1637

Is there any way to apply a differential signal to UAF42 ?

Thanks in advance

over 5 years ago

0 Thomas Kuehl over 5 years ago

TI__Guru* 93105 points

Hello Tansel,

The UAF42 topology does not accommodate differential operation. I suggest using a multiple-feedback (MFB) active filter which lends itself nicely to a differential input, or fully differential filter. I wrote an article for TI's AAJ some years ago telling how to accomplish this. Here is the article:

Q3 2009 Issue Analog Applications Journal.pdf

The OPA1637 should be ideal for many differential active filter applications:

https://www.ti.com/lit/ds/symlink/opa1637.pdf

Regards, Thomas

Precision Amplifiers Applications Engineering

Amplifiers

Amplifiers forum

UAF42: Differential Input