摘要
在传统的一阶带隙基准电路的基础上,通过在电路中添加串联电阻和NPN型二极管并与电阻并联的方法,实现高阶曲率补偿。该电路不仅具有结构简单、使用器件少的优点,而且还能显著提高带隙基准的设计精度。另外,较宽的输入电压范围(10 V^25 V)有利于此带隙基准源应用在更宽的领域。仿真结果表明,通过华虹NEC 0.35μm BCD工艺,使用H-spice仿真软件对该电路仿真,在0℃~80℃温度范围内,其带隙基准的温度系数仅为0.501 ppm/℃;在10 V^25 V输入电压范围内,输出电压摆幅为31.49 mV。
Based on the traditional first-order band-gap reference circuit, the high-order curvature compensation is achieved in this paper by adding series resistors and a NPN-diode, paralleled with a resistor. The circuit not only employs few devices, but also improves the accuracy of the band-gap voltage reference significantly. In addition, the input voltage ranges from 10 V to 25 V, that benefits the band-gap voltage reference applied in wider areas. Based on the HHNEC_BCD350 technology and the simulation results of H-spice software, the results show that the temperature coefficient of band-gap voltage reference is 0.501 ppm/℃ from 0 ℃ to 80 ℃,and the output voltage swing is 31.49 mV when the input voltage is from 10 V to 25 V.
出处
《电子技术应用》
北大核心
2013年第9期57-60,共4页
Application of Electronic Technique
关键词
高阶曲率补偿
带隙基准
宽输入电压
high-order curvature compensation
band-gap voltage reference
wide-input voltage
