Patent ID: 7569126

Claim:
A biosensor system, comprising: a biosensor test strip, comprising a first measurement electrode; a first conductive trace operatively coupled to the first measurement electrode; a second conductive trace operatively coupled to the first measurement electrode; a second measurement electrode; a third conductive trace operatively coupled to the second measurement electrode; a fourth conductive trace operatively coupled to the second measurement electrode; a test meter coupled to the biosensor test strip, the test meter comprising: a difference amplifier having first and second difference amplifier inputs and a difference amplifier output, wherein the first difference amplifier input is operatively coupled to the second conductive trace and the second difference amplifier input is operatively coupled to the fourth conductive trace; a reference voltage source; and a voltage follower amplifier having first and second voltage follower inputs and a voltage follower output, wherein the first voltage follower input is coupled to the reference voltage source, the second voltage follower input is coupled to the difference amplifier output, and the voltage follower output is coupled to the third conductive trace.