Hello PICLIST,

I am looking for a sanity check.

The MCP6001 has a published minimum slew rate of at least 0.4V/us at
5V and -40C. 0.4V/us=3D400kV/s.

In my application I am generating a 5V pk-pk 25kHz triangle wave. The
slew rate of a 25kHz triangle wave voltage rise V over time t. For
slew rate the time would be 1/2 the period of the triangle wave or
1/2*1/25kHz=3D20us, the rise would be 5V. 5V/20us=3D250kV/S=3D0.25V/us

According to this the required slew rate for the triangle wave is
0.25V/us which is within the 0.4V/us limit.

Four questions:
* Does the slew rate calculation given above "check out" ?
* Slew rate is rate of change (the first derivative) of the output.
Are op-amps ever rated for rate of rate of change (second derivative)
of the output?
* Is there a way to deduce how much rounding will occur on the sharp
points of the triangle wave from the MCP6001 ratings?

--
Jason White
--=20
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