[volt-nuts] LTZ1000 reference appnote question

[Fabio Eboli]

Hello, in this thread on eevblog:

http://www.eevblog.com/forum/projects-designs-and-technical-stuff/does-anyone-know-what-this-diode-is-for/

a guy named DiligentMinds.com asked the question
about why there is a 1N4148 diode on the output of
the opamp in the LTZ1000 reference circuit, the one
designed by Jim William in the appnotes, that can
also be seen on the first page of the datasheet:

http://cds.linear.com/images/product/1203_app_1.JPG

Now I'm curious,
anybody knows the answer?

Thanks,
Fabio.

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