Patent ID: 8183922

Claim:
A differential pair circuit, comprising: a pair of transistors, a first terminal of each transistor configured for coupling to an input voltage, a second terminal of each transistor configured for coupling to a load and a third terminal of each transistor for coupling to a current source, each transistor having a transconductance gain that varies as a function of temperature, where the transistors are MOSFET transistors and the first, second and third terminals are gate, drain and source terminals, respectively; and a current source circuit coupled to the third terminals of the transistors, the current source circuit configured for providing a bias current that varies as temperature varies in proportion to variations in transconductance gain of the transistors, where the current source circuit, further comprises: a reference voltage supply circuit; and a converter circuit coupled to the reference voltage supply, the converter circuit operable for generating the bias current from a reference voltage supply generated by the reference voltage supply circuit.