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논문 기본 정보

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(Sogang University) (Sogang University) (Sogang University) (Sogang University) (Sogang University) (Sogang University) (Sogang University) (Hankuk University of Foreign Studies) (Sogang University)
저널정보
대한전자공학회 JOURNAL OF SEMICONDUCTOR TECHNOLOGY AND SCIENCE Journal of Semiconductor Technology and Science Vol.25 No.5
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    초록·키워드

    This paper presents an 8.3-MHz second-order noise-shaping successive approximation register (NS-SAR) analog-to-digital converter (ADC). To achieve an ideal second-order noise transfer function (NTF), an integrator combining an amplifier with a ping-pong switched-capacitor (SC) is used. By sharing the amplifier between two integrators, the design reduces the area of the loop filter. Implemented in a 28 nm CMOS process, the prototype achieves a bandwidth of 8.3 MHz while operating at a 100 MHz with an oversampling ratio (OSR) of 6. It achieves a signal-to-noise and distortion ratio (SNDR) of 66.1 dB, and a dynamic range (DR) of 69.8 dB while consuming 2.93 mW from a 1 V supply. The resulting Schreier figure-of-merit (FoM<sub>S</sub>) is 160.6 dB, and the Walden FoM (FoM<sub>W</sub>) is 107.0 fJ/conversion-step. The active die area occupies 0.101 mm².

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