A 10b 200MS/s 1.8mm^2 83mW 0.13μm CMOS ADC Based on Highly Linear Integrated Capacitors(Electronic Circuits)

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概要

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• This work proposes a 10b 200MS/s 1.8mm^2 83mW 0.13μm CMOS ADC based on highly linear integrated capacitors for high-quality video system applications such as next-generation DTV and radar vision and wireless communication system applications such as WLAN, WiMax, SDR, LMDS, and MMDS simultaneously requiring low voltage, low power, and small area at high speed. The proposed 3-stage pipeline ADC optimizes chip area and power dissipation at the target resolution and sampling rate. The proposed ADC employs two versions of the SHA with gate-bootstrapped NMOS switches and conventional CMOS switches to verify and compare the input sampling effectiveness. Both of the two versions of the wide-band low-noise SHA maintain 10b input accuracy at 200MS/s. The proposed all signal-isolated 3-D completely symmetric capacitor layout reduces the device mismatch of two MDACs by isolating each unit capacitor from all neighboring signal lines with all the employed metal lines and by placing extra internal metal lines with a fixed internal bias voltage between signal lines connecting the bottom plate of each unit capacitor. The low-noise on-chip current and voltage references with internal RC filters can select optional off-chip voltage references. The prototype ADC is implemented in a 0.13μm 1P8M CMOS process. The measured DNL and INL are within 0.24LSB and 0.35LSB while the ADC shows a maximum SNDR of 54dB and 48dB and a maximum SFDR of 67dB and 61dB at 200MS/s and 250MS/s, respectively. The ADC with an active die area of 1.8mm^2 consumes 83mW at 200MS/s and at a 1.2V supply.

• 社団法人電子情報通信学会の論文
• 2007-10-01

著者

• Cho Young-jae

  Department Of Electronic Engineering Sogang University

• Kim Young-ju

  Department Of Internal Medicine Seoul National University Hospital

• Lee Seung-Hoon

  Department of Neurology, Seoul National University Hospital

• Lee Seung-hoon

  Department Of Electronic Engineering Sogang University

• SA Doo-Hwan

  Department of Electronic Engineering, Sogang University

• Sa Doo-hwan

  Department Of Electronic Engineering Sogang University

• Kim Young‐ju

  Sogang Univ. Seoul Kor

• Kim Young-ju

  Department Of Computer Engineering Silla University

• Kim Young‐ju

  Dept. Of Electronic Engineering Sogang University

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