A5050938584- Analog and Mixed-Signal Circuit Design
- Advancements in Semiconductor Devices and Circuit Design
- Radio Frequency Integrated Circuit Design
- GaN-based semiconductor devices and materials
- Semiconductor materials and devices
- Low-power high-performance VLSI design
- Advancements in PLL and VCO Technologies
- Neural Networks and Applications
- Sensor Technology and Measurement Systems
- Advanced Power Amplifier Design
- Semiconductor Lasers and Optical Devices
- Photonic and Optical Devices
Samsung (South Korea)
2022-2025
Korea Advanced Institute of Science and Technology
2020-2021
In this article, we propose a bandgap reference (BGR) with single bipolar junction transistor (BJT) branch and proportional-to-absolute-temperature (PTAT)-embedded amplifier. Having fewer BJT passive components, the proposed BGR uses less power area compared to conventional that multiple BJTs resistors. As achieves temperature compensation by employing feedback loop has two gain stages, frequency is required. We scheme where capacitor connected between output current mirror node in...
In this paper, we propose an output-capacitorless analog low-dropout voltage regulator (ALDO) featuring frequency compensation of a four-stage amplifier consisting three-stage error (EA) without cascoding plus last stage formed by pass transistor ( <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$\boldsymbol {M_{P}}$ </tex-math></inline-formula> ). It achieves good output regulation under low supply-voltage...
In this letter, we propose a bandgap reference (BGR) with single BJT branch and PTAT-embedded amplifier cascode Miller frequency compensation. As implemented in 0.18-μm CMOS, the proposed BGR occupies small area of 0.0082 mm2 low power consumption 192 nW while achieving voltage spread (σ/μ) 0.33% temperature coefficient 26.3 ppm/°C over -40 °C~140 °C, without any trimming.
In this paper, various Miller-compensated amplifiersare analyzed by using the two-port feedback analysis togetherwith root-locus diagram. The proposed solves problemsof Miller theorem/approximation that fail to predict a polesplittingand require an impractical assumption aninitial lower frequency pole before connecting capacitorin two-stage amplifier should be associated with input ofthe amplifier. Since sheds light on howthe closed-loop poles originate from open-loop in thes-plane, it...
In this paper, various Miller-compensated amplifiers are analyzed by using the two-port feedback analysis together with root-locus diagram. The proposed solves problems of Miller theorem/approximation that fail to predict a pole-splitting and require an impractical assumption initial lower frequency pole before connecting capacitor in two-stage amplifier should be associated input amplifier. Since sheds light on how closed-loop poles originate from open-loop s-plane, it allows association...