I'm now using AD8317.
And in the datesheet, two parameters confuse me. One is "Small Signal Bandwidth" and the other is "Video Bandwidth (or Envelope Bandwidth".
My doubt is, what's the meaning of "Small Signal Bandwidth"? And how to measure the two parameters?
ps: In the datasheet, there is some content about the video bandwidth in page 15.
And using fomula (12), with R=1.5kohm and C=3.5pF, the Video Bandwidth should be about 30MHz not 50MHz in page 4.
Is it right?