Circuits

A Continuous-Time Zoom Sensor Readout Frontend With Fast Tracking and Floating-Gm-CCO Integrator

A Continuous-Time Zoom Sensor Readout Frontend With Fast Tracking and Floating-Gm-CCO Integrator 150 150

Abstract:

Emerging edge applications processing weak signals in noisy environments demand sensor readout frontends with low noise, low power, high dynamic range (DR), and high input impedance. This article presents a zoom sensor readout frontend design that can track signals with rapid changes over a wide DR with high energy efficiency. …

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An Ultralow Cross-Regulation Single-Inductor Multiple-Output (SIMO) Buck Converter Using Reordered Power-Distributive Control

An Ultralow Cross-Regulation Single-Inductor Multiple-Output (SIMO) Buck Converter Using Reordered Power-Distributive Control 150 150

Abstract:

A single-inductor multiple-output (SIMO) buck converter employing reordered power-distributive control (RPDC) is presented to achieve ultralow cross regulation. Adedicated power-distribution controller implements RPDC by adaptively adjusting the switching sequence: when the inductor current is insufficient, the switching period is extended, and when excessive, an end phase in the form of …

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A 28-nm Digital Transpose SRAM Compute-in-Memory Macro With Accurate/Approximate Dual Mode for Floating-Point Edge Training and Inference

A 28-nm Digital Transpose SRAM Compute-in-Memory Macro With Accurate/Approximate Dual Mode for Floating-Point Edge Training and Inference 150 150

Abstract:

Static random-access memory (SRAM)-based computing-in-memory (CIM) macros have been widely studied to improve the energy efficiency of edge artificial intelligence (AI) inference tasks. However, less attention has been given to AI training, which requires CIM macros to not only perform matrix multiply-accumulate (MAC) operations but also support matrix transposition. …

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A Wide-Dynamic-Range Photovoltaic Energy Harvester With Adaptive Power-Scalable MPPT Control and Direct Power-to-Digital Converter

A Wide-Dynamic-Range Photovoltaic Energy Harvester With Adaptive Power-Scalable MPPT Control and Direct Power-to-Digital Converter 150 150

Abstract:

This article presents a photovoltaic energy harvester (PVEH) that achieves high maximum power point tracking (MPPT) efficiency and power conversion efficiency across a $100~000{\times }$ input power dynamic range (DR) (from $10~{\mu }$ W to 1W). Wide-dynamic-range operation is challenging due to the inherent tradeoff between MPPT accuracy and controller power consumption. …

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A Multiband Ultralow-Power Transceiver With Two-Step Wake-Up Reception

A Multiband Ultralow-Power Transceiver With Two-Step Wake-Up Reception 150 150

Abstract:

This letter presents a multiband fully integrated ultralow-power (ULP) transceiver with a two-step wake-up receiver (WuRX) and switched-capacitor (SC)-based high-efficiency transmitter. Operating from 200 MHz to 1 GHz, the transceiver covers most IoT applications on a single chip. By employing a novel two-step wake-up scheme with a rotating correlator, the proposed …

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PERCEL: A Rewritable NVM CIM Incorporating a CTT-Based Per-Cell DAC

PERCEL: A Rewritable NVM CIM Incorporating a CTT-Based Per-Cell DAC 150 150

Abstract:

Compute-in-memory (CiM) accelerators perform matrix vector multiplications (MVMs) directly inside memory arrays, reducing data movement and improving both energy efficiency and throughput for artificial intelligence (AI) workloads. To reduce the number of conversions, recent designs use multibit compute cells. Nevertheless, practical multibit CiM still faces a tension among accuracy, efficiency, …

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A Reconfigurable Multimode Readout IC for Nonconductive and Capacitive Sensing With 33.9-dB SNR on 6.5-in AMOLED Panels

A Reconfigurable Multimode Readout IC for Nonconductive and Capacitive Sensing With 33.9-dB SNR on 6.5-in AMOLED Panels 150 150

Abstract:

This letter presents a multimode readout IC for 6.5-in 34Tx/16Rx on-cell touch AMOLED (OCTA) panels, detecting both conductive and nonconductive objects (NCos) without panel modifications. To enable this dual detection, a reconfigurable analog front-end (AFE) is proposed, functioning as either a capacitance-to-voltage converter or a triboelectric charge sampler. In …

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A Novel VGSOT-pMTJ Write Circuit for Hybrid CMOS/MTJ CIM Architecture

A Novel VGSOT-pMTJ Write Circuit for Hybrid CMOS/MTJ CIM Architecture 150 150

Abstract:

Hybrid computation-in-memory (CIM) architecture has emerged as the most promising alternative to overcome the drawbacks of the conventional CMOS-only devices used in the conventional von-Neumann architecture. In the hybrid CIM architecture, a pair of perpendicular magnetic tunnel junctions (pMTJs) is used to store one bit of information. Though there are …

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A High-Efficiency Magnetoelectric Power Link With a Load-Adaptive CMOS Rectifier for Miniaturized Implants

A High-Efficiency Magnetoelectric Power Link With a Load-Adaptive CMOS Rectifier for Miniaturized Implants 150 150

Abstract:

Miniaturized biomedical implants are currently constrained by limited wireless power transfer (WPT) efficiency under load variation and spatial misalignment. This work presents a custom magnetoelectric (ME) power link incorporating a load-adaptive CMOS rectifier to address these challenges. By employing a current sensing control loop for dynamic switch sizing and delay …

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