← 返回 JSSC 论文列表JSSC 2022第9期Power Management250-nm CMOS
A Duty-Cycled Integrated-Fluxgate Magnetometer for Current Sensing
一种用于电流感测的占空比集成磁通门磁力计，实现低能耗运行
±2.4 mT测量范围，125 kHz 3-dB带宽，500-nT rms噪声，770 kS/s峰值采样率
磁通门磁力计电流感测低能耗数字积分器占空比运行
▸混合信号前端设计实现高效能耗占空比运行
▸13位数字积分器在睡眠模式下保留最后收敛输出
▸分层搜索模式比模拟实现快10倍收敛
Abstract
This article presents a duty-cycled integrated-
fluxgate (IFG) magnetic-to-digital converter for contactless cur-
rent sensing. While previous works have proven high linearity,
low noise, and low offset capabilities of fluxgate sensing, this work
focuses on low energy operation. The mixed-signal front-end
design enables energy-efficient duty cycling with a 13-bit digital
integrator to retain the last converged output during sleep mode
and resume searching in its vicinity upon wake up. The system
ac