Threshold Voltage - Dependence On Temperature

Dependence On Temperature

As with the case of oxide thickness affecting threshold voltage, temperature has an effect on the threshold voltage of a CMOS device. Expanding on part of the equation in the body effect section

where is Boltzmann's constant, is Temperature, is the charge of an electron, is a doping parameter and is the intrinsic doping parameter for the substrate.

We see that the surface potential has a direct relationship with the temperature. Looking above, that while the threshold voltage does not have a direct relationship but is not independent of the effects. On average this variation is between −4 mV/°C and −2 mV/°C depending on doping level. For a change of 30 °C this results in significant variation from the 500mV design parameter commonly used for the 90 nanometer technology node.

Read more about this topic:  Threshold Voltage

Famous quotes containing the words dependence on, dependence and/or temperature:

    The invalid is a parasite on society. In a certain state it is indecent to go on living. To vegetate on in cowardly dependence on physicians and medicaments after the meaning of life, the right to life, has been lost ought to entail the profound contempt of society.
    Friedrich Nietzsche (1844–1900)

    As, therefore, we can have no dependence upon morality without religion;Mso, on the other hand, there is nothing better to be expected from religion without morality;Mnevertheless, ‘tis no prodigy to see a man whose real moral character stands very low, who yet entertains the highest notion of himself, in the light of a religious man.
    Laurence Sterne (1713–1768)

    The siren south is well enough, but New York, at the beginning of March, is a hoyden we would not care to miss—a drafty wench, her temperature up and down, full of bold promises and dust in the eye.
    —E.B. (Elwyn Brooks)