| US 7,532,042 B2 | ||
| Precision sampling circuit | ||
| Hae-Seung Lee, Bedford, Mass. (US) | ||
| Assigned to Cambridge Analog Technologies, Inc., Bedford, Mass. (US) | ||
| Filed on Jan. 10, 2007, as Appl. No. 11/621,770. | ||
| Application 11/621770 is a continuation in part of application No. 11/558114, filed on Nov. 09, 2006, abandoned. | ||
| Claims priority of provisional application 60/735641, filed on Nov. 10, 2005. | ||
| Prior Publication US 2007/0146018 A1, Jun. 28, 2007 | ||
| Int. Cl. G11C 27/02 (2006.01) | ||
| U.S. Cl. 327—91 [327/94] | 14 Claims |
| 1. A The sampling circuit comprising:
an input voltage source;
a first switch having an input operatively connected to said input voltage source;
a first capacitor operatively connected to an output of said first switch;
a second switch having an input operatively connected to said first capacitor;
a second input voltage source;
a third switch having an input operatively connected to said second input voltage source;
a second capacitor operatively connected to an output of said third switch;
a fourth switch having an input operatively connected to said second capacitor; and
a third capacitor being operatively connected across said output of said third switch and said output of said first switch.
|