Patent ID: 6822817
Filing Date: 2004-11-23
Classification: G11B,H03F

Abstract:
An electronic circuit for amplifying a signal, comprising:a differential input which includes a first input node and a second input node for receiving the signal; first, second, third, and fourth transistors; first and second capacitive elements; first and second current sources; the first transistor having a base coupled to the first input node of the differential input; a collector for coupling to a voltage source; and an emitter coupled to the first current source; the second transistor having an emitter coupled to the first current source and to a first end of the first capacitive element; a base coupled to a biasing voltage and to a first end of the second capacitive element; and a collector for coupling to the voltage source; the third transistor having a base coupled to the second input node of the differential input; a collector for coupling to the voltage source; and an emitter coupled to the second current source; the fourth transistor having the emitter coupled to the second current source and to a second end of the second capacitive element; a base coupled to the biasing voltage and to a second end of the first capacitive element; and a collector for coupling to the voltage source; and a differential output which includes a first output node coupled to the collector of the first transistor and a second output node coupled to the collector of the third transistor.