| US 7,595,747 B2 | ||
| Digital-to-analog converter, and method thereof | ||
| Yun Seung Shin, Seoul (Korea, Republic of); Ji Woon Jung, Gwangmyeong-si (Korea, Republic of); and Myung Hee Lee, Seoul (Korea, Republic of) | ||
| Assigned to Samsung Electroncis Co., Ltd, Suwon-si (Korea, Republic of) | ||
| Filed on Jan. 09, 2008, as Appl. No. 11/971,320. | ||
| Claims priority of application No. 10-2007-0015212 (KR), filed on Feb. 14, 2007. | ||
| Prior Publication US 2008/0191916 A1, Aug. 14, 2008 | ||
| Int. Cl. H03M 1/66 (2006.01) | ||
| U.S. Cl. 341—145 [341/144] | 18 Claims |
| 1. An integrated circuit, comprising:
a first capacitor;
an operation amplifier having a first input terminal connected to the first capacitor, a second input terminal, and an output
terminal; and
a switching circuit having a plurality of switches each being switched in response to a corresponding switching signal from
among a plurality of switching signals,
wherein the switching circuit transmits a first voltage to a first terminal of the first capacitor, transmits a second voltage
to the second input terminal of the operation amplifier, and connects the first input terminal of the operation amplifier
to the output terminal of the operation amplifier during a first period; and then transmits a third voltage to the second
input terminal of the operation amplifier, separates the first input terminal of the operation amplifier from the output terminal
of the operation amplifier, and connects the first terminal of the first capacitor to the output terminal of the operation
amplifier during a second period.
|