中文摘要：

介绍了一种电压控制型压电陶瓷驱动器的工作原理,基于OKI（OKI Electric Industry Co.）0.5μm BiCMOS（Bipolar CMOS）工艺,设计了一个用于该驱动器的高电源抑制比、低温漂的带隙电压基准源。采用自基准LDO为基准源提供伪电源电压,进一步提高电路的电源抑制比。引入改进后的分段线性电流补偿技术对基准进行曲率校正,提高了温度补偿的灵活性和精确度。HSPICE仿真结果表明,在-40-＋150℃范围内,基准电压的温度系数为2.3×10^-6/℃,低频时电路电源抑制比为-174dB。

英文摘要：

The operating principle of a voltage controlled piezoelectric ceramic actuator was introduced.Based on0.5μm Bipolar CMOS（BiCMOS）process of OKI Electric Industry Co.,a band-gap reference（BGR）with high power supply rejection ratio（PSRR）and low temperature-drift which was applied in the actuator was proposed.In order to further improve the PSRR of the circuit,a self-voltage referenced low dropout linear regulator（LDO）was adopted to provide pseudo-power supply voltage for the BGR.Curvature correction was realized through the introduction of improved piecewise-linear current compensation technology.Thus the flexibility and precision of the temperature compensation was improved.HSPICE simulation results showed that the band-gap voltage reference had a temperature coefficient of 2.3×10^-6/℃ when the temperature ranged from -40 ℃ to 150 ℃,the PSRR was -174 dB at low frequency.