Patent ID: 7642846

Claim:
A circuit for providing offset cancellation comprising: a primary amplifier comprising: a first output; a second output; a first load input; and a second load input; a first feedback loop connected to the primary amplifier, the first feedback loop comprising: a first switch located between the first output of the primary amplifier and the first load input; and a first offset capacitor, a first plate of the first offset capacitor being coupled to the first switch between the first switch and the first load input, and a second plate of the first offset capacitor being coupled to ground; and a second feedback loop connected to the primary amplifier, the second feedback loop comprising: a second switch located between the second output of the primary amplifier and the second load input; and a second offset capacitor, a first plate of the second offset capacitor being coupled to the second switch between the second switch and the second load input, and a second plate of the second offset capacitor being coupled to ground.