Analog-to-digital converter using dynamic register-based switching

The present invention relates to an analog-to-digital converter technology using dynamic register-based switching, which significantly reduces successive-approximation register (SAR) operation loop latency. According to the present invention, an analog-to-digital converter using dynamic register-bas...

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Bibliographische Detailangaben
Hauptverfasser: LEE SEUNG HOON, LEE JAE HYUK, KIM YONG TAE, IM YOON BIN, BOO JUN HO, CHO KANG IL, KIM HO JIN, LIM JAE GEUN, PARK JUN SANG, JEON JE MIN, AHN GIL CHO
Format: Patent
Sprache:eng ; kor
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Zusammenfassung:The present invention relates to an analog-to-digital converter technology using dynamic register-based switching, which significantly reduces successive-approximation register (SAR) operation loop latency. According to the present invention, an analog-to-digital converter using dynamic register-based switching comprises an SAR analog-to-digital converter (ADC) including two stages to form a pipeline structure, and a residual voltage amplifier connected between the two stages to amplify the residual voltage of the first stage. The SAR ADC is controlled by allowing a dynamic register storing an output signal of a comparator to directly operate a switch of a digital-to-analog converter (DAC) without passing through a control logic. 본 발명은 동적 레지스터에 기반한 스위칭을 이용하는 아날로그 디지털 컨버터 기술에 관한 것으로, 2개의 단(stage)을 포함하여 파이프라인(pipeline) 구조를 형성하는 SAR(successive-approximation register) ADC(analog-to-digital converter) 및 2개의 단 사이에 연결되어 제 1 단의 잔류전압을 증폭하는 잔류전압 증폭기를 포함하고, SAR ADC는 비교기의 출력 신호를 저장하는 동적 레지스터(dynamic register)가 제어 로직(control logic)을 경유하지 않고 직접 DAC(digital-to-analog converter)의 스위치를 구동하여 제어한다.