Arthur van Roermund

A 6GS/s 0.5GHz BW continuous-time 2-1-1 MASH ΔΣ modulator with phase-boosted current-mode ELD compensation in 40nm CMOS

C. Zhang, Lucien J. Breems, Qingyuan Liu, Georgi Radulov et autres

This paper presents a 6GS/s 0.5GHz bandwidth CT 2-1-1 MASH 3b ΔΣ modulator in 40nm CMOS. To enable the 0.5GHz bandwidth, the modulator employs current-mode excess loop delay compensation with phase boosting, current-mode locally-time-interleaved quantizers, and on-chip comparator offset calibration to realize …

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Ultra-Low-Power Clock Generation for IoT Radios

Ming Ding, Pieter Harpe, Zhihao Zhou, Yao‐Hong Liu et autres

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Nanopower SAR ADCs with Reference Voltage Generation

Maoqiang Liu, Kevin Pelzers, Rainier van Dommele, Arthur van Roermund et autres

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A Low-Power Fast Start-Up Crystal Oscillator With an Autonomous Dynamically Adjusted Load

Ming Ding, Yao‐Hong Liu, Pieter Harpe, Christian Bachmann et autres

An energy-efficient fast start-up method for crystal oscillators is presented, which enables aggressive duty-cycled operation of IoT radios to minimize overall power consumption. A digitally controlled crystal oscillator using the proposed startup technique in 90-nm CMOS is presented. Thanks to the dynamically …

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A 10-b 20-MS/s SAR ADC With DAC-Compensated Discrete-Time Reference Driver

Maoqiang Liu, Arthur van Roermund, Pieter Harpe

Successive approximation register (SAR) analogto-digital converters (ADCs) with a charge-redistribution (CR) digital-to-analog converter (DAC) usually require a power-hungry reference driver or large decoupling capacitance, occupying significant chip area. This paper presents a CR SAR ADC with an integrated low-power and area-efficient discrete-time …

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A Hybrid Design Automation Tool for SAR ADCs in IoT

Ming Ding, Pieter Harpe, Gui-Bin Chen, Benjamin Busze et autres

In this paper, a hybrid design automation tool for asynchronous successive approximation register analog-to-digital converters (SAR ADCs) in Internet-of-Things applications is presented. The circuit design-driven tool uses a topdown design approach and generates circuits from specification to layout automatically. A hybrid approach …

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Dimmable integrated CMOS LED driver based on a resonant DC/DC hybrid‐switched capacitor converter

Juan C. Castellanos, Mert Turhan, M.A.M. Hendrix, Arthur van Roermund et autres

Summary This paper presents a 7.7‐mm2 on‐chip LED driver based on a DC/DC resonant hybrid‐switched capacitor converter operating in the MHz range with and without output capacitor. The converter operation allows continuously dimming the LED while keeping control on both peak and …

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A circuit-design-driven tool with a hybrid automation approach for SAR ADCs in IoT

Ming Ding, Gui-Bin Chen, Pieter Harpe, Benjamin Busze et autres

A circuit-design-driven tool with a hybrid design automation approach for asynchronous SAR ADCs in IoT applications is presented. To minimize the circuit design time while still being able to maintain ADC performance, the hybrid approach allocates automation and manual effort properly for …

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Ultra-Low-Power RF Transceivers

Emanuele Lopelli, Johan D. van der Tang, Arthur van Roermund

A trend toward a world in which people will be surrounded by networked devices that are sensitive and adaptive to their needs has been witnessed. The Watt nodes and the milli-Watt nodes demand a further improvement in technology scaling to meet the …

A 7.1-fJ/Conversion-Step 88-dB SFDR SAR ADC With Energy-Free “Swap To Reset”

Maoqiang Liu, Arthur van Roermund, Pieter Harpe

The digital-to-analog converter (DAC) in SAR anolog-to-digital converters (ADCs) is often dominant for both power consumption and linearity. Dedicated switching schemes can save power, but mostly focus on conversion energy, whereas the DAC reset can consume significant energy as well. This paper …

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A 92.2% peak-efficiency self-resonant hybrid switched-capacitor LED driver in 0.18μm CMOS

Juan C. Castellanos, Mert Turhan, M.A.M. Hendrix, Arthur van Roermund et autres

This paper presents a LED driver IC based on a self-resonant Hybrid-Switched Capacitor Converter (H-SCC) operating in the MHz range. Capacitors and switches of the LED driver are integrated on-chip in a low-cost 5V 0.18μm bulk CMOS technology. The effective chip area …

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A 10b 20MS/s SAR ADC with a low-power and area-efficient DAC-compensated reference

Maoqiang Liu, Arthur van Roermund, Pieter Harpe

Reference drivers for charge-redistribution SAR ADCs require significant area and/or power. In this work, a low-power and area-efficient passive reference-voltage driving scheme for charge-redistribution SAR ADCs is proposed. An on-chip decoupling capacitor is pre-charged to a reference voltage during tracking phase and …

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