Patent ID: 7869774

Claim:
A sensor circuit, comprising: a detection element operably coupled with an output stage, wherein the detection element comprises a first diode having a cathode and an anode, the anode of the first diode operably coupled with the output stage; and a reference voltage element operably coupled with the detection element, the reference voltage element capable of providing an output detection signal, and the cathode of the first diode operably coupled with the reference voltage element, wherein the reference voltage element comprises: a first resistor operably coupled with the cathode of the first diode; a second diode having a cathode and an anode, the cathode of the second diode operably coupled with the first resistor; a second resistor operably coupled between the anode of the second diode and a ground; and a capacitor operably coupled between the cathode of the first diode and the ground.