등록
단일 DAC 캐패시터를 이용한 멀티 비트 시그마 델타 변조기
- 발명자
-
김이경, 조민형, 김규현, 권종기, 김종대, 이승철
- 출원번호
-
11588455 (2006.10.27)
- 공개번호
-
20070126615 (2007.06.07)
- 등록번호
- 7388533 (2008.06.17)
- 출원국
- 미국
- 협약과제
-
05MB1100, 나노소자기반 회로 설계기술 개발,
김종대
- 초록
- A digital-to-analog converter (DAC) for a sigma-delta modulator is provided. The DAC has a switched capacitor structure using an operational amplifier (OP amp) and performs a function exceeding 3-level using a switching method employing only one capacitor in single ended form. Thus, DAC non-linearity caused by capacitor mismatching does not occur, and the number of output levels of the DAC is increased. Also, the DAC capacitor may be applied to a general DAC to increase the ratio of DAC output levels to capacitors.
- KSP 제안 키워드
- 3-Level, Analog Converter, Digital to Analog Converter, Non-Linearity, Operational Amplifiers(Op-Amps), Sigma-Delta, Single-Ended, Switched Capacitor(SC), Switching method, delta modulator, digital-to-analog(DAC), sigma-delta modulator