>>
and from the datasheet on www.national.com I _BELIEVE_ that Ao = 100,000 V/V
(100 dB) and Ft = 4 Mhz (4 *10^6 Hz)  but when I plug all the numbers in...
I get a corner frequency of 40 Hz!  There is no way that is a correct corner
frequency.
<<

Why do you say that?  That is the frequency at which signals start to no
longer look like DC to the device.  It is quite common for this to be at a
"low" frequency for high gain devices.


*****************************************************************
Olin Lathrop, embedded systems consultant in Devens Massachusetts
(978) 772-3129, olin@cognivis.com, http://www.cognivis.com

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