noise figure, noise voltage, noise current: http://www.ti.com/lit/an/slyt094/slyt094.pdf

On 7/18/2015 2:16 AM, Attila Kinali wrote:
On Fri, 17 Jul 2015 23:25:10 -0400
Charles Steinmetz <[email protected]> wrote:

A pair of Zetex (Diodes, Inc.)
ZTX849 or FZT849 actually have significantly lower voltage noise than
either the LM394 or MAT12.
I always wonder how you figure out whether a transistor is low noise
or not. What part of the datasheet hints at which transistors have low
noise and which have not? Even if it's just try and measure, how
do you find good candidates to measure?

                        Attila Kinali


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