← 返回 JSSC 论文列表JSSC 2022第10期Power Management0.11μm CMOS
A BJT-Based Temperature-to-Frequency Converter With 1 C 3σ Inaccuracy From 40 C
基于BJT的温度-频率转换器，在-40°C至140°C范围内实现±1°C的3σ精度。
±1°C(3σ), 3.1μW功耗, 0.025mm²面积
温度传感器BJT弛豫振荡器CMOS数字修调
▸采用电容翻转技术消除比较器偏移
▸使用三重阱结构的NMOS开关抑制漏电流
▸集成数字修调提高温度精度
Abstract
This article presents a bipolar junction transistor
(BJT)-based CMOS temp erature-to-frequency converter (TFC).
A relaxation oscillator (ROSC) consisting of an integrating capac-
itor, a current source, and a comparator converts the ratio of the
complementary-to-absolute-temperature (CTAT) voltage to the
proportional-to-absolute-temperature (PTAT) voltage created by
the BJT core to frequency. To improve the temperature accuracy,
we incorporate a capacitor flipping technique to remove an offset
of