电荷平衡式电压—频率转换器的原理及误差分析  

Analysis on Principle and Error of Charge-Balancing Voltage-Frequency Converter

作　　者：周璐[1] 

机构地区：[1]北京航天自动控制研究所,北京100854

出　　处：《测控技术》2009年第5期87-89,93,共4页Measurement & Control Technology

摘　　要：单片集成V/F变换器广泛用于自动控制、数字仪表和无线电设备中,其功能用于完成电压和频率之间的转换。将电压量(或电流量)转换成频率信号后其抗干扰能力大为增强,并且应用极为方便。本文以AD652为例,阐述了电荷平衡式压频转换器的工作原理,重点分析了转换过程中的原理性误差和由器件带宽产生的高频误差,并求解出误差表达式。Single-integrating voltage-frequency converters are widely applied to automation, digital-instrument and wireless-equipment, which accomplish the conversion between voltage and frequency. Therefore, the ability of anti-jamming is enhanced and its application is more convenient. The principle is elaborated of charge-balancing voltage-frequency converter with AD652 as an example to emphasise on the errors which are from principle and brought by the amplify＇ s bandwith, and finally the expression of error is calculated.

关 键 词：电压频率转换 电荷平衡 误差分析 

分 类 号：TM501.4[电气工程—电器]