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구분 출원국
출원년도 ~ 키워드

상세정보

등록 아날로그 회로에서 dB-선형 이득 제어가 가능한 이득 조절 장치 및 그에 따른 증폭기

아날로그 회로에서 dB-선형 이득 제어가 가능한 이득 조절 장치 및 그에 따른 증폭기
이미지 확대
발명자
김이경, 권종기, 조민형
출원번호
12507701 (2009.07.22)
공개번호
20100156534 (2010.06.24)
등록번호
7821341 (2010.10.26)
출원국
미국
협약과제
08MB2800, 45nm급 혼성 SoC용 아날로그 회로기술, 권종기
초록
Provided are a gain control device and an amplifier using the gain control device. The gain control device includes a first input resistance unit having a first variable resistor whose resistance is linearly variable and a first fixed resistor respectively receiving a first input signal and a second input signal having a sign different from the first input signal and outputting current through a first output terminal, and a second input resistance unit having a second fixed resistor and a second variable resistor whose resistance is linearly variable respectively receiving the first input signal and the second input signal and outputting current through a second output terminal.Since the gain control device can separately perform dB-linear gain control, it is easily combined with a circuit, such as a continuous-time sigma-delta modulator (SDM), a continuous-time filter, and a continuous-time analog-to-digital converter (ADC), and enables miniaturization and low power consumption.