Patent ID: 7217981

Claim:
A structure comprising: a first resistor comprising a first metal, conductive metal oxide or metal silicide first material, said first material having a first temperature coefficient of resistance, said first resistor in a first interlevel dielectric layer of an integrated circuit having at least two interlevel dielectric layers, each interlevel dielectric layer containing metal wires; a second resistor comprising a second metal, conductive metal oxide or metal silicide second material, said second material having a second temperature coefficient of resistance, said second temperature coefficient of resistance different from said first temperature coefficient of resistance, said second resistor in said first interlevel dielectric layer of said integrated circuit or in a second interlevel dielectric layer of said integrated circuit, said first resistor and said second resistor electrically connected to each other and electrically coupled to a voltage source by wires formed in said first or said first and second dielectric layers, said wires having a lower resistance than either of said first and second resistors; and wherein when said first resistor and said second resistor are both in said first interlevel dielectric layer, a bottom surface of said second resistor is in direct physical and electrical contact with a top surface of said first resistor.