Seonghwan Cho
Korea Advanced Institute of Science and Technology
About the Lab
Professor Seonghwan Cho's research lab specializes in integrated circuit design with a focus on advanced semiconductor technologies, particularly in the development of high-performance, low-power analog and mixed-signal circuits. The lab explores cutting-edge CMOS SoC (System-on-Chip) architectures, including DRAM sense amplifiers with offset cancellation techniques and temperature-compensated reference current sources for reliable operation in harsh environments such as automotive systems. Research also extends to next-generation display technologies and the integration of diverse functionalities—such as RF, MEMS, and on-chip networks—into single-chip systems, reflecting a vision of system-level integration akin to a 'digital black hole.'
Research Overview
Research Output Trend
Figures are computed from collected data and may differ slightly.
Selected Papers
3This paper analyzes a DRAM sense amplifier (SA) architecture employing an offset cancellation technique using parasitic bit-line capacitance. The offset is stored through a diode-connected configuration without requiring additional calibration circuits, enabling a compact design. A prototype was fabricated in a TSMC 65 nm CMOS process and operated at 400 MHz. A built-in self-test (BIST) evaluates sensing accuracy by performing repeated write-and-read operations across 64 SAs. Measurements show t
정보기술(IT)의 핵심을 이루는 소자는 R,L,C 에서 시작하여 진공관, 트랜지스터를 거쳐 CMOS SoC (System-on-Chip)의 전성기에 이르고 있다. CMOS SoC 는 하나의 반도체 칩이고 시스템을 설계하는데 쓰이는 부품이지만 종래의 칩 부품과는 다르다. SoC 는 그 안에 multi-processor, memory system 은 물론 on-chip network 과 Operating System 까지 들어가는 시스템이다. 앞으로의 웬만한 portable 내장형 시스템은 하나의 SoC 칩과 디스플레이와 배터리, 안테나가 전부일 것이다. 단자에서 보이는 전자의 행동 패턴에 따라 여러 소자들이 있는데, 이들을 적절히 연결하는 것이 SoC 설계다. 앞으로 전자가 아닌 새로운 방식의 소자가 Silicon MOSFET를 대체하게 된다 해도 전자공학에서 축적된 설계방법론은 계속 살아남아 활용될 것이다. SoC 는 블랙홀과 흡사하여 디지털 회로 뿐 아니라 아날로그, 디지털, 메모
Modern automobiles increasingly support a variety of advanced features, with autonomous vehicle safety gaining heightened attention. This has created a growing demand for sensor technology that can accurately detect environmental changes. One of the critical challenges in automotive sensor technology is the need for a temperature-compensated reference. This paper focuses on designing a temperatureindependent reference current source in this MPW. Conventional reference current sources are highly
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