Patent ID: 6414548
Filing Date: 2002-07-02
Classification: H03F

Abstract:
A differential amplifier, comprising:a first channel and a second channel; each of said first and second channels having an input, an output and a terminal to be connected to a supply voltage, a transistor with a first controlled path, a first current source connected to said first controlled path, said first controlled path being connected to said terminal via said first current source, a second current source having a second controlled path connected in series with said first controlled path, said second current source being a voltage controlled current source, a third current source connected to said output, said third current source being a controlled current source, a potential-shifting device connected to said first current source, said second and third current sources being controllable via said potential-shifting device; and a resistor connected to said first controlled path in said first channel and to said first controlled path in said second channel for connecting said first channel to said second channel.