The use of an adequate gate bias resistor
was shown to be useful in producing a wide linearity sweet-spot in junction FET devices.
An innovative amplifier design has been developed that allows traditional medium power Darlington feedback amplifiers to operate directly from 5 V without the need for an external bias resistor
An obvious example is using just one external "bias" resistor to avoid over-dimensioning the analog circuitry to allow for the inherent [+ or -]30 percent variation that comes with the on-chip bias resistor
c] is applied to the diodes through the bias resistor
The base bias resistor
must take this voltage drop into account.
5[degrees] bit was the addition of a 1 to 2 k[ohm] bias resistor
from the PHEMT drain to ground to avoid a floating bias potential.
For systems where the ambient temperature does change, an optional ambient temperature bias resistor
is available, which balances out the effects of changing temperature.
This time constant is minimized by using the smallest FET device geometry and by setting the gate bias resistor
to the lowest value without degrading isolation.