I have been reading about Norton operational amplifiers, I got a good idea of how they work, even at the transistor level, I understand that difference current input = voltage output.

What I have been having trouble with is finding out about the advantages of these op-amps VS the traditional voltage ones, is it speed, bandwidth, what?

Where should one use a Norton op-amp instead of a regular voltage op-amp? I ask this because if it's a matter of applications in which the output is a current (like in a DAC) one can still use regular voltage op-amps, for example, an inverting transimpedance amplifier with its input as a virtual ground.

Two example data sheets are [LM3900](https://www.ti.com/lit/ds/symlink/lm3900.pdf) and [LM359](http://www.ti.com/lit/ds/symlink/lm359.pdf).

This [video](https://www.youtube.com/watch?v=uOy2Zr_kKIM) explains fairly well how a Norton (Current Differencing Amp) works. Look at 19:30 on the video.

However again, I need to know in which applications this op-amp is best, and what should drive me to use a Norton op-amp instead of a voltage op-amp.