April 1st is a bad day to announce any actual news, especially when new announcements aren’t made on a daily- or even weekly basis. After seeing the date at the top of the news I automatically took it for some April fools’ joke. :-)

If you go back far enough in this blog, there’s a bit about the iMote. Good times!

That was last year’s — the website’s code automatically re-enabled it – not what we intended :)

[Edit: Wrong, it looks like LTSpice ignores slew rate in AC Analysis, which I suppose makes some sense.]

It appears that staying well bellow the GBP of the op-amp will greatly reduce the chance that phase differences would appear between the two op-amps. I believe this has to do with phase margin, and in general, how fast the op-amp can follow the input, and how that speed can change with load current and other operating conditions. Keeping currents low would help, but then there’s also potentially differences between the parts.

In fact, my thinking is that the phase will start dropping off about a decade before the gain (x1) will. That would imply that you need to be operating at least a decade below the GBP to avoid phase variation due to parts/operating condition.

Anyone else want to chime in on this one?

Keep up the awesome work.

I think that since both signals are undergoing the exact same transfer function (within the component tolerances) so their phase delays should also be identical. Is that what you mean?