摘要
基准模块是LDO性稳压器的核心部分，它是影响稳压器精度的关键因素之一。本文针对LDO性稳压器对基准模块一方面有较高的精度要求，另一方面又有较低静态电流要求的矛盾设计了一款简单实用的电压基准电路。仿真结果表明该电路在-40-140℃的温度系数为7．7’10^-6℃，低频时的电源抑制比可达-76dB，基准源电路的供电电压范围为2-4．5V。
The base module is the core part of the LDO linear regulator, and it is one of the key factors affect the accuracy of the regulator.The ardcle in view of the linear voltage regulator to the benchmark module have higher accuracy on the one hand, on the other hand, have the low static current demand contradiction to designed a simple and practical voltage reference circuit.The tesults show that the temperarure coefficient is 7.7＇10-6℃ when the circuit is in 40 to 140℃, and the power supply rejection ration can reach 76dB when it is low frequency, and the benchmark source circuit power supply voltage in the range of 2 to 4.5V.
出处
《电子世界》
2013年第8期36-37,共2页
Electronics World
关键词
带隙基准源
LDO稳压器
温度系数
电源抑制比
Bandgap Reference
LDO Regulator
Temperature Coefficient
Power Supply Rejection Ratio
