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This device is modeled using an equivalent circuit. Model parameters should not be mistaken for datasheet parameters.
See below for details.
Large signal model
All transistor node voltage references are with respect to the internal nodes in the following equations (that is, the ohmic resistance pin that is connect the inside of the structure.)
Temperature dependent parameters
The following parameters are functions of temperature. T is the operating temperate and TNOM is the nominal (or measured temperature). T and TNOM can be adjusted in a number of ways.
The device has thermal noise generators, , and , as a result of the series ohmic resistances, and the shot and flicker noise generators, collectively , as a result of the channel.
Ohmic resistance noise:
Shot and flicker noise:
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