现代电子技术2025，Vol.48Issue(4)：45-51,7.DOI:10.16652/j.issn.1004-373x.2025.04.008
基于可编程非线性补偿的斜坡电压发生器
A ramp voltage generator based on programmable nonlinear compensation
摘要
Abstract
A linear ramp voltage with constant slope can generate the calibration current of less than 1 nA after passing by the capacitor.The stability of the current largely depends on the performance of the ramp voltage generator.A slope voltage generator based on programmable nonlinear compensation is proposed,which uses the controllable current source to charge the capacitor,obtains nonlinear compensation signals,and combines multiple analog switches to achieve alternating compensation of two identical channels,thereby generating a smoother slope voltage.In comparison with the slope voltage generator based on two analog-to-digital converters in the past,it can greatly shorten the compensation time and expand the adjustable range of slope.The linear slope generated by capacitor charging overcomes the problem of nonlinearity in the compensation signal of the analog-to-digital converter.The experimental results show that the proposed slope voltage generator based on the non-linear compensation method of capacitor charging proposed in this paper can perform better than the compensation method of the analog-to-digital converter in terms of slope control and slope smoothness.After non-linear compensation by means of capacitor charging,the smoothness of the ramp voltage is relatively improved by 80.4%.关键词
斜坡电压发生器/非线性补偿/模拟开关/可控电流源/数模转换器/电容充放电Key words
ramp voltage generator/nonlinear compensation/analog switch/controlled current source/digital to analog converter/capacitor charge-discharge分类
信息技术与安全科学引用本文复制引用
刘志存,富雅琼,钱璐帅,陈乐..基于可编程非线性补偿的斜坡电压发生器[J].现代电子技术,2025,48(4):45-51,7.基金项目
国家重点研发计划"基础科研条件与重大科学仪器设备研发"重点专项课题(2022YFF0706903) （2022YFF0706903）
