Patent ID: 8289832
Filing Date: 2012-10-16
Classification: G11B,H01S,H03F,H03K

Abstract:
1. An input signal processing system for an input current signal, comprising: a transconductance cell having a first input, second input, and an output, wherein the first input is coupled to receive the input signal; a first resistor coupled to a first input of the transconductance cell, wherein the first resistor converts the input current signal to an input voltage signal; a first voltage-current converter coupled to the output, the second input, the resistor, and a low voltage supply, wherein the first voltage-current converter is operative for converting, the input voltage signal to a input current signal; a low pass filter having an input coupled to the voltage converter for filtering noise from the input current signal; a second voltage-current converter coupled to the low pass filter and a low voltage supply, wherein the second voltage-current converter is operative for converting a voltage signal to an output current signal; and a current mirror coupled to the low pass filter and the second voltage-current converter, the current mirror operative for producing a low noise output signal in response to receiving the output current signal.