AN105 Datasheet (Vishay Siliconix) - FETS AS VOLTAGE-CONTROLLED RESISTORS

AN105, FETS AS VOLTAGE-CONTROLLED RESISTORS

www.DataSheet4U.com AN105 FETs As VoltageĆControlled Resistors Introduction: The Nature of VCRs A voltage-controlled resistor (VCR) may be defined as a three-terminal variable resistor where the resistance value between two of the terminals is controlled by a voltage potential applied to the third.

For a junction field-effect transistor (JFET) under certain operating conditions, the resistance of the drain-source channel is a function of the gate-source voltage alone and the JFET will behave a

AN105 Features

* oltage (V) VDS

* Drain-Source Voltage (V) Figure 8. VCR7N Without Feedback Figure 9. VCR7N With Feedback. Table 1: Distortion vs. Temperature Without Feedback Temperature (_C) +125 +25

* 55 With Feedb