一款高精度低功耗电压基准的设计与实现

发布时间：2018-01-07 16:14

  本文关键词：一款高精度低功耗电压基准的设计与实现　出处：《半导体技术》2017年11期 　论文类型：期刊论文

  更多相关文章： 高精度 低功耗 电压基准 温度系数 线性调整率 负载调整率

【摘要】：设计了一款高输出电压情况下的高精度低功耗电压基准电路。电路采用了比例采样负反馈结构达到较高和可控的输出电压,并利用曲率补偿电路极大地减小了输出电压的温度系数。针对较宽输入电压范围内的超低线性调整率规格,给出了多级带隙级联的电路结构。针对功耗和超低负载调整率的问题,电路采用了基于运算放大器的限流模式和内置大尺寸横向扩散金属氧化物半导体(LDMOS)晶体管的设计。该电路在CSMC 0.25μm高压BCD工艺条件下进行设计、仿真和流片,测试结果表明,该电压基准输出电压为3.3 V,温度系数为19.4×10~(-6)/℃,线性调整率为5.6μV/V,负载调整率为23.3μV/V,工作电流为45μA。
[Abstract]:A high - precision low - power consumption voltage reference circuit with high output voltage is designed . The circuit adopts proportional sampling negative feedback structure to achieve higher and controllable output voltage , and the circuit structure of multi - stage band gap cascade is greatly reduced by using curvature compensation circuit . According to the low power consumption and ultra - low load regulation rate , the circuit adopts a current - limiting mode based on operational amplifier and the design of built - in large - size lateral diffused metal oxide semiconductor ( LDMOS ) transistor . The circuit is designed , simulated and flow - chip based on operational amplifier . The test results show that the voltage reference output voltage is 3.3 V , the temperature coefficient is 19.4 脳 10 ~ ( -6 ) / 鈩，

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