Patent ID: 8604876
Filing Date: 2013-12-10
Classification: H03F

Abstract:
1. A current filtering current buffer amplifier comprising: a first input port and a second input port configured to be coupled to and receive input current, wherein the first input port receives a positive current input and the second input port receives a negative current input; a first output port and a second output port configured to be coupled to and provide current to a load, wherein the first output port outputs a positive current and the second output port outputs a negative current; a buffer configured to transfer the received input current to the first and second output ports as an output current, the buffer having an input impedance and an output impedance where the output impedance is higher than the input impedance, the buffer including first and second amplifiers, the first amplifier being a common mode feedback amplifier; and a filter coupled to the first and second input ports and coupled to the first and second amplifiers, the filter having a complex impedance and being configured to notch filter the received input current.