Patent ID: 7898453
Filing Date: 2011-03-01
Classification: H03M

Abstract:
1. An analog-to-digital converter comprising: a comparator comprising a comparator input and a comparator output; a control block comprising a control block input coupled to the comparator output; a plurality of pairs of capacitors, capacitance values of the pairs of capacitors forming a substantially binary progression, each pair of capacitors of the plurality of pairs of capacitors comprising a first capacitor and a second capacitor, each capacitor of the plurality of pairs of capacitors comprising a first end coupled to the comparator input and a second end; and a sampling switch comprising a switch input configured to receive an input voltage, a switch output coupled to the comparator input, and a control switch input, the sampling switch being configured to be closed and transmit the input voltage to the switch output, or to be open and to isolate the input voltage from the switch output, depending on state of the control switch input; wherein the control block is configured to: