https://scholar.dgist.ac.kr/handle/20.500.11750/862 2026-04-04T17:04:37Z 2026-04-04T17:04:37Z 최지웅 이정협 설태령 https://scholar.dgist.ac.kr/handle/20.500.11750/59861 2026-01-26T01:10:19Z

Title: 넓은 동적 범위를 가지는 전류-디지털 변환 장치 Author(s): 최지웅; 이정협; 설태령

윤종혁 송민영 이정협 설태령 https://scholar.dgist.ac.kr/handle/20.500.11750/59196 2025-11-18T06:10:15Z

Title: CONTINUOUS TIME DELTA SIGMA ANALOG-DIGITAL CONVERSION DEVICE CAPABLE OF SIMULTANEOUSLY MEASURING VOLTAGE AND CURRENT Author(s): 윤종혁; 송민영; 이정협; 설태령 Abstract: Disclosed is an analog-digital converter capable of simultaneously obtaining a voltage and a current. The disclosed analog-digital converter can simultaneously obtain a voltage and a current by using a hybrid integrator for simultaneously receiving and integrating the voltage and the current and a quantizer for generating a differential mode output and a common mode output through comparison with a reference voltage. By using the analog-digital converter according to an exemplary embodiment, the size of a system can be maintained small while consuming less power, and thus a biometric response can be easily identified and analyzed.

신연재 이정협 강홍기 위정윤 장재은 https://scholar.dgist.ac.kr/handle/20.500.11750/59195 2025-11-18T06:10:14Z

Title: ELECTRICAL STIMULATION DEVICE HAVING WIDE RANGE OF OPERATING VOLTAGE Author(s): 신연재; 이정협; 강홍기; 위정윤; 장재은 Abstract: Disclosed is an electrical stimulation circuit having a wide range of operating voltage while exhibiting excellent power efficiency. The disclosed electrical stimulation circuit includes a bias circuit comprising an NMOS transistor or a PMOS transistor. The bias circuit enables the transistors to operate at a stable voltage even when the operating voltage varies above or below a threshold value. The electrical stimulation circuit has a wide range of operating voltage while exhibiting excellent power efficiency, and occupies a small area, thereby being advantageous for miniaturization.

이정협 이세환 최지웅 https://scholar.dgist.ac.kr/handle/20.500.11750/58748 2025-07-28T08:10:11Z

Title: Continuous-time delta-sigma analog-to-digital conversion device and operation method thereof Author(s): 이정협; 이세환; 최지웅 Abstract: The present invention relates to a continuous-time [Delta] [Sigma] analog-to-digital conversion device and an operating method thereof, the continuous-time [Delta] [Sigma] analog-to-digital conversion device according to one embodiment of the present invention comprises: a linear integrator that generates a first output signal corresponding to an input voltage on the basis of an operation of a linear Gm circuit that receives a preset input voltage; and a quantizer that generates a second output signal corresponding to the first output signal based on an operation of a body-driven oscillator (VCO) that receives the first output signal, and generates a digital output code corresponding to the second output signal based on an operation of a frequency-to-digital converter (FDC) that receives the second output signal.