Patent ID: 8576104
Filing Date: 2013-11-05
Classification: H03M

Abstract:
1. An analog-to-digital converter system, comprising: a first analog-to-digital converter circuit configured to provide a first code representative of a first analog quantity; the first analog-to-digital converter circuit further configured to provide a first analog residue quantity representative of the first analog quantity with respect to the first code; a second analog-to-digital converter circuit configured to provide a second code representative of a second analog quantity; the second analog-to-digital converter circuit further configured to provide a second analog residue quantity representative of the second analog quantity with resect to the second code; a third analog-to-digital converter circuit configured to provide a third code representative of a difference of the first analog residue quantity and the second analog residue quantity; a digital interface circuit configured to provide an output code representative of at least one of the first, second, and third codes, wherein the first analog quantity is a first voltage applied between a first terminal and a reference terminal, and the second analog quantity is a second voltage applied between a second terminal and the reference terminal.