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JSSC 2023第9期Data Converters65nm

A 04-V 00294-mm 2 Resistor-Based Temperature Sensor Achieving 024 C p2p Inaccura

一种基于电阻的超低压温度传感器，适用于能量收集物联网设备，具有高精度和低功耗。
65nm CMOS, 0.4V, 10.4µW, ±0.24°C (p2p), 385 fJ·K²
超低压温度传感器能量收集物联网高精度
▸采用数字密集型频率锁定环（DFLL）和摆动增强RC前端实现超低压操作和高精度
▸具有背景偏移校准和电压调节功能的采样-升压动态比较器，确保在0.5V以下电源下的操作和精度
▸电阻调节的数字控制环形振荡器（DCRO）扩展了工作温度范围
Abstract
This article describes an ultralow-voltage (ULV) resistor-based temperature sensor for sub-0.5 V energy- harvesting Internet-of-Things (IoT) devices. The key features are: 1) a digital-intensive frequency-locked loop (DFLL) with a swing- boosted RC front-end to enable ULV operation with high accuracy and avert the analog-to-digital converter; 2) a sample-and-boost dynamic comparator featuring background offset calibration and voltage regulation to safeguard the operation and accuracy at a sub-0.