基于曲率补偿的低温度系数带隙基准源设计

发布时间：2018-01-05 07:34

  本文关键词：基于曲率补偿的低温度系数带隙基准源设计　出处：《仪表技术与传感器》2017年06期 　论文类型：期刊论文

  更多相关文章： 带隙基准电压源 负反馈箝位 曲率补偿 β倍增器电流源

【摘要】：为了减小基准源输出信号随温度变化的波动,设计了一种基于温度曲率补偿的带隙基准电压源电路结构,采用负反馈箝位技术,简化了电路结构,减小了噪声和失调误差;同时应用β倍增器电流源作为温度曲率补偿电路,有效降低了温度系数。仿真结果表明,在-20~105℃范围内,所设计的带隙基准电压源的温度系数仅为0.904 ppm/℃,低频时电源电压抑制比为46 dB。该电路结构可以有效地提高带隙基准电压源的温度性能。
[Abstract]:In order to reduce the fluctuation of reference source output signal with temperature, a bandgap voltage reference circuit structure based on temperature curvature compensation is designed. The negative feedback clamping technique is used to simplify the circuit structure. Noise and misalignment errors are reduced; At the same time, the 尾 -multiplier current source is used as the temperature curvature compensation circuit, and the temperature coefficient is reduced effectively. The simulation results show that the temperature coefficient is in the range of -20 ~ 105 鈩，

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