Patent ID: 6856198
Filing Date: 2005-02-15
Classification: G05F,H03F

Abstract:
1. An amplifier comprising: a differential unit including an input port to receive a voltage input signal; a current mirror unit including an output port; a voltage-to-current conversion unit to couple the differential unit to the current minor unit and to generate a current signal to drive the current minor unit to generate a current output signal at the output port, wherein the differential unit comprises: a current source; a diode connected insulated gate field-effect transistor; and a pair of insulated gate field-effect transistors coupled to the current source and the diode connected insulated gate field-effect transistor, wherein the diode connected insulated gate field-effect transistor comprises an n-type insulated gate field-effect transistor and the pair of insulated gate field-effect transistors comprise a common drain/source node and an active cascode connected pair of insulated gate field-effect transistors having a common gate node comprising the input port.