Switches

A 475-nW Area-Efficient Programmable Analog Feature Extraction Filterbank for Audio Classification

A 475-nW Area-Efficient Programmable Analog Feature Extraction Filterbank for Audio Classification 150 150

Abstract:

Audio classification in edge devices has many applications and can be implemented at varying levels of complexity, typically consisting of a feature extractor followed by a classifier. Such devices are often always-on, constantly listening to their surroundings, and have a small form factor; therefore, they require low-power operation and high …

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A Folded-Differential Switched-Capacitor SRAM CIM Macro With Scalable MAC Sizes for TinyML Inference

A Folded-Differential Switched-Capacitor SRAM CIM Macro With Scalable MAC Sizes for TinyML Inference 150 150

Abstract:

This letter presents a switched-capacitor SRAM compute-in-memory macro optimized for TinyML inference. Key features include: 1) an area-efficient folded-differential multiply-and-accumulate (FD-MAC) scheme to double the signal margin; 2) a closed-loop floating-inverter amplifier (FIA)-based charge accumulation technique for signal-to-noise ratio enhancement and multiply-and-accumulate (MAC) voltage integration; and 3) a sparsity-aware multistep MAC method …

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0.13 K NETD D-Band CMOS Passive Imager With Noise Suppression Analysis

0.13 K NETD D-Band CMOS Passive Imager With Noise Suppression Analysis 150 150

Abstract:

This article presents a new system design and in-depth analysis of a wideband, low-power passive imaging receiver based on a Dicke-switch architecture, implemented in 28 nm CMOS technology. The proposed structure employs a three-coil gm-boosting technique for the low-noise amplifier (LNA). This approach reduces the LNA’s noise figure (NF) and …

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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

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 …

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Side-Channel Attack-Resistant HMAC-SHA256 Accelerator With Boolean and Arithmetic Masking in Intel 4 CMOS

Side-Channel Attack-Resistant HMAC-SHA256 Accelerator With Boolean and Arithmetic Masking in Intel 4 CMOS 150 150

Abstract:

This work describes a side-channel attack (SCA)-resistant hash-based message authentication code (HMAC) accelerator with secure hash algorithm 2 (SHA-2) using Boolean and arithmetic masking along with the first-reported ASIC implementation in Intel 4 CMOS with 10 M measured traces. Previously reported masked datapath suffers from high area/performance overheads (>100%) designs due to …

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A 10.2 V 8-Channel Neural Stimulator With Nearly Constant Efficiency Across 90% Current Range and a TDM ADC-Based One-Shot Charge Balancing With < 6 mV Residue

A 10.2 V 8-Channel Neural Stimulator With Nearly Constant Efficiency Across 90% Current Range and a TDM ADC-Based One-Shot Charge Balancing With < 6 mV Residue 150 150

Abstract:

This letter presents an 8-channel current-mode stimulator achieving a ±10.2 V voltage compliance in a standard CMOS process, supporting up to 4.5 mA stimulation current per channel. The proposed dynamic charge pump (DCP), which adaptively sizes its switches based on the stimulation current, helps achieve ~15% higher power efficiency at low currents compared …

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A 16 V-Output Switched-Capacitor Sigma Converter With 180 ns Transient Response and 94% Efficiency for LiDAR Receivers

A 16 V-Output Switched-Capacitor Sigma Converter With 180 ns Transient Response and 94% Efficiency for LiDAR Receivers 150 150

Abstract:

This article presents a step-up switched-capacitor (SC) sigma converter with fast transient, high efficiency, and high accuracy for light detection and ranging (LiDAR) receiver applications. The proposed sigma converter combines an unregulated SC converter in the high-voltage (HV) domain and a low-dropout (LDO) regulator in the low-voltage (LV) domain, achieving …

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An 11.95-ENOB 560-MS/s Amplifier-Switching Subranging Analog-to-Digital Converter With Multi-Threshold Comparators

An 11.95-ENOB 560-MS/s Amplifier-Switching Subranging Analog-to-Digital Converter With Multi-Threshold Comparators 150 150

Abstract:

This article proposes a 14-bit, 560-MS/s subranging analog-to-digital converter (ADC) that employs an amplifier-switching architecture with multi-threshold comparators. The proposed amplifier-switching architecture reuses a flash quantizer multiple times during subranging conversion by amplifying the residue voltage with an appropriate gain at each quantization step. This approach reduces the required …

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A Broadband and Compact GaN Millimeter-Wave MMIC SPDT Switch Using Modified π-Networks

A Broadband and Compact GaN Millimeter-Wave MMIC SPDT Switch Using Modified π-Networks 150 150

Abstract:

This letter presents a design methodology for broadband and compact millimeter-wave (mm-wave) single-pole double-throw (SPDT) switches targeting the Ku–Ka band. Conventional SPDT switches based on quarter-wavelength transmission line typically occupy significant chip area, while alternative designs utilizing standard $\pi $ -type equivalent circuits often suffer from bandwidth degradation due to …

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