internet of things

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A Delay-Compensated RC Oscillator With Constant Ramp Peak-Voltage Achieving 23 ppm/°C Temperature Coefficient from -40 to 100 °C

A Delay-Compensated RC Oscillator With Constant Ramp Peak-Voltage Achieving 23 ppm/°C Temperature Coefficient from -40 to 100 °C 150 150
Author(s): Wenbo Zhang, Fantao Wang, Junyi Liu, Yanzhao Ma

Abstract:

This letter presents a delay-compensated RC relaxation oscillator for enhanced frequency stability. The proposed architecture employs a peak-sampling circuit to detect the charging-capacitor peak voltage. A feedback loop composed of an error amplifier and compensation resistors adaptively raises the capacitor DC baseline to compensate for comparator-delay-induced frequency error, while phase-alternating …

Published in: IEEE Solid-State Circuits Letters
Page(s): 1 – 1
Year of Publication: 2026
Electronic ISSN: 2573-9603
DOI: 10.1109/LSSC.2026.3738818
Publisher: IEEE

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miniSQI: A Compact and Low-Power SQIsign-1D Post-Quantum Digital Signature Verification Accelerator

miniSQI: A Compact and Low-Power SQIsign-1D Post-Quantum Digital Signature Verification Accelerator 150 150
Author(s): Krishna Sai Tarun Ramapragada, Utsav Banerjee

Abstract:

We present the first ASIC demonstration of SQIsign, an isogeny-based National Institute of Standards and Technology (NIST)-candidate post-quantum digital signature scheme. Our optimized Montgomery modular multiplier circuit design enables $2\times $ speedup and energy savings, while an efficient memory organization provides a 31% area savings. We implement SQIsign-1D-Uncompressed signature verification …

Published in: IEEE Solid-State Circuits Letters
Page(s): 238 – 241
Year of Publication: 2026
Electronic ISSN: 2573-9603
DOI: 10.1109/LSSC.2026.3720807
Publisher: IEEE

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A Zero-Static-Power ADC With Integrated Dynamic Reference and Driver-Free Operation Achieving 58.6 dB SNDR From –40 °C to 85 °C

A Zero-Static-Power ADC With Integrated Dynamic Reference and Driver-Free Operation Achieving 58.6 dB SNDR From –40 °C to 85 °C 150 150
Author(s): Yiming Wang, Yihang Luan, Zhiliang Hong, Jiawei Xu

Abstract:

This letter presents a 10-bit ENOB charge-sharing SAR ADC with a fully integrated dynamic bandgap reference (BGR), enabling first-order noise shaping and ultralow-power (ULP) operation. The charge-sharing ADC and dynamic BGR form an ideal pair: both operate without static current, allowing compact integration and high precision. The SAR uses only …

Published in: IEEE Solid-State Circuits Letters
Page(s): 178 – 181
Year of Publication: 2026
Electronic ISSN: 2573-9603
DOI: 10.1109/LSSC.2026.3697203
Publisher: IEEE

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A Low-Voltage-CMOS AC–DC Converter With Series-Capacitor Pre-Regulation and Fine-Grained Capacitance Reallocation for Mains-Powered IoT

A Low-Voltage-CMOS AC–DC Converter With Series-Capacitor Pre-Regulation and Fine-Grained Capacitance Reallocation for Mains-Powered IoT 150 150
Author(s): Jiahao Shi, Xuchu Mu, Qiaobo Ma, Yang Jiang, Rui P. Martins, Pui-In Mak

Abstract:

This article presents a power- and area-efficient switched-capacitor (SC) ac–dc converter in low-voltage (LV) CMOS for mains-powered Internet of Things (IoT) applications. The proposed converter adopts a single-stage series-capacitor architecture with fine-grained pre-rectification regulation, eliminating the need for intermediate high-voltage (HV) dc capacitors or HV dc–dc stages, thereby …

Published in: IEEE Journal of Solid-State Circuits
Page(s): 1 – 14
Year of Publication: 2026
Electronic ISSN: 1558-173X
DOI: 10.1109/JSSC.2025.3650592
Publisher: IEEE

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