一种高精度可调阈值产生器

发布时间：2018-05-19 02:33

  本文选题：基准电流 + 加权型电流舵　； 参考：《固体电子学研究与进展》2017年04期

【摘要】：基于CSMC 0.25μm BCD工艺,设计了一种高精度的可调阈值产生电路,采用一个7位的DAC和两个5位的DAC结合电阻分压产生8个输出电压,且输出电压可调,精度高。仿真结果表明,对于5位的DAC电路,最大的误差为0.002V,对于基准为1V的电压而言其相对误差只有0.2%,实际测试结果表明电路的最大误差为0.98%。因此,该电路具有面积小、功耗低、精度高的优点。该电路可用于新型射线探测器材料——碲锌镉晶体(CdZnTe,简称CZT)探测器和其他需要可调多阈值电压的应用场合。
[Abstract]:Based on the CSMC 0.25 渭 m BCD process, a high precision adjustable threshold generating circuit is designed. A 7-bit DAC and two five-bit DAC combined with resistor are used to generate 8 output voltages. The output voltage is adjustable and the precision is high. The simulation results show that the maximum error is 0.002V for 5-bit DAC circuit, and only 0.2V for the voltage with reference of 1V. The actual test results show that the maximum error of the circuit is 0.98. Therefore, the circuit has the advantages of small area, low power consumption and high precision. The circuit can be used in the applications of a new type of ray-detector material, CZTTE (CZTTE) detector and other applications which need to adjust multi-threshold voltage.
【作者单位】： 西安理工大学电子工程系;
【基金】：国家自然科学基金资助项目(51477138)
【分类号】：TN792
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本文编号：1908344