Patent ID: 6292034
Filing Date: 2001-09-18
Classification: H03F

Abstract:
A transconductive device which minimizes noise, having an input and an output, the transconductive device comprising:a first current source connected to a first node;a first transconductive element connected to the first node, the first transconductive element having an output and an input, the input of the first transconductive element forms the input of the low noise transconductive device, the first transconductive element has a transconductance of Gm1*N, where N is a predetermined value greater than zero, and Gm1 is not equal to 0;a load, having a resistance of 1/Gm1, the load having a first end coupled to the output of the first transconductive element and a second end coupled to a power supply terminal;a second transconductive element, having an input and an output, the output of the second transconductive elements forms the output of the low noise transconductive device, the second transconductive element having a transconductance of Gm1/N; andwherein the input of the second transconductive element is connected to the output of the first transconductive element; anda second current source connected at a second node to the second transconductive element, the second current source providing a constant current to the second transconductive element while the voltage at the second node may vary as the output of the first transconductive element varies.