一种新型高精度高温度稳定性恒流源研究  

Research of a New Type of Constant Current Source with High-precision and High Temperature Stability

作　　者：姜洪雨[1] 

机构地区：[1]西安微电子技术研究所,陕西西安710054

出　　处：《现代电子技术》2008年第14期3-5,14,共4页Modern Electronics Technique

摘　　要：研究一种应用混合集成电路技术实现的新型高精度和高温度稳定性的恒流源,以适应当前系统对恒流源高精度、高温度稳定性和较大电流的需求。在详细分析电路结构和工作原理的基础上,讨论如何提高电路的精度和温度稳定性,并给出具体的解决方案,对关键部分给出了设计电路图,最后对采样电阻的设计和布线艺术给出了合理的方案。投片测试分析表明:该设计安全可靠,达到高温度稳定性和高精度设计目标。该电路具有较小的体积和较好的性能,满足型号系统的要求。灵活的设计方式使其具有较好的使用价值和应用前景。Using the hybrid integrated circuit technology,a new type of constant current source with high- precision temperature stability to accommodate current constant current source of high accuracy,high temperature stability and larger current demand is studied. In a detailed analysis of the structure and working principle circuit on the basis of circuit discussed how to improve the accuracy and temperature stability, and specific solutions are given on the key part of the design schematics, sampling resistor on the final design and layout art is a reasonable option. Vote- test analysis show that：the design is safe, reliable,high temperature stability and achieve high- precision design goals. The circuit has a smaller size and better performance to meet the requirements of the model system. Flexible design has better ways to use and application prospects.

关 键 词：恒流源 电压基准 采样电阻 温度稳定性 误差放大器 温度补偿 

分 类 号：TN710[电子电信—电路与系统]