Patent ID: 6664842
Filing Date: 2003-12-16
Classification: H03F,H03K

Abstract:
A voltage follower circuit, comprising:a first field effect transistor (FET) having a source, a drain, and a gate, said drain connected to a first supply voltage; a second FET having a source, a drain, and a gate, the drain of the second FET connected to the source of the first FET, the gate of said second FET providing an input for said voltage follower circuit and the source of said second FET providing an output for said voltage follower circuit; a resistive network having a first resistor and a second resistor, each of which has first and second terminals, the first terminal of said first resistor connected to said first supply voltage, the second terminal of the first resistor coupled with the first terminal of the second resistor, the gate of the second FET coupled to the second terminal of the second resistor, and the gate of the first FET coupled to the second terminal of the first resistor; and a current source connected between the source of said second FET and a second supply voltage such that the voltage at said output follows a voltage applied at said input.