Patent ID: 7766907

Claim:
A circuit for discriminating between a plurality of temperature measurements generated by an array of sensors positioned on an ablation catheter, the circuit comprising: an input signal receiving component for receiving a plurality of input signals from individual sensors in the sensor array corresponding to the plurality of temperature measurements; a plurality of amplifier components, each having a first input, a second input, and an output, wherein said first input of each amplifier component is coupled with said input signal receiving component for receiving a respective one of the plurality of input signals; a plurality of rectifier components, each having a first terminal and a second terminal; wherein said first terminal of each rectifier component is coupled with said output of a respective one of said plurality of amplifier components; a single feedback loop coupled with said second terminal of all of said plurality of rectifier components and further coupled with said second input of all of said plurality of amplifier components; wherein the voltage level of said feedback loop substantially follows a voltage received at one of said plurality of said input signal receiving components; and an output component coupled with said feedback loop for providing an output signal corresponding to said voltage level of said feedback loop.