摘要
针对传感器对性能参数要求的增高,为解决传感器受斩波温漂和瞬变尖峰所带来的影响,以平衡式差动斩波器电路在传感器中的应用为例,阐述平衡式差动斩波器电路的工作原理及其和连接在差动斩波器电路输出端上的隔离放大器应用。介绍了差动斩波器电路的基本结构,并通过详述FET串-并联斩波器和差动斩波器工作原理,分析它在温漂特性中的优势和特点。结果表明,平衡式差动斩波器电路在使用中抵消由斩波器温漂和瞬变尖峰所带来影响的优点。
In order to solve the problem of the chopper temperature drift and the transient spike, this paper takes the application of the balanced differential chopper circuit sensor as an example to illustrate the differential chopping cir- cuit and the application of the isolation amplifier which connects to the output of the differential chopper circuit. The bas- ic structure of the differential chopper circuit is introduced, and the advantages and characteristics of the string - parallel chopper and differential chopper are analyzed in detail. The results show that the balanced differential chopper circuit in using can offset the impact brought by the chopper temperature drift and transient spikes.
出处
《仪表技术》
2017年第11期31-32,36,共3页
Instrumentation Technology
关键词
FET串-并联斩波器
平衡式差动斩波器
斩波器温漂
瞬变尖峰
FET string-parallel chopper
balanced differential chopper
chopper temperature drift
transient spikes
