CAJ | 학술논문

设计了一种改进的双积分A/D转换器,通过采取2种模式积分的方法实现了+5 V单电源供电,克服了传统双积分A/D转换器需要双电源的弊端.重点考虑可处理输入信号范围以及功耗的优化,并使用栅压自举开关保证了A/D转换的精度.整体电路设计基于CSMC 0.5μm 2P3M CMOS工艺,使用Cadence Spectre进行仿真,在5 V供电情况下达到10 bit精度,转换速率>10 Kb/s,输入电压范围达到0～5 V,INL<1/2 LSB,系统功耗2.636 mW.
설계료일충개진적쌍적분A/D전환기,통과채취2충모식적분적방법실현료+5 V단전원공전,극복료전통쌍적분A/D전환기수요쌍전원적폐단.중점고필가처리수입신호범위이급공모적우화,병사용책압자거개관보증료A/D전환적정도.정체전로설계기우CSMC 0.5μm 2P3M CMOS공예,사용Cadence Spectre진행방진,재5 V공전정황하체도10 bit정도,전환속솔>10 Kb/s,수입전압범위체도0～5 V,INL<1/2 LSB,계통공모2.636 mW.
An improved double-integral A/D converter was designed. By using two modes of integration, a +5 V individual power supply was realized to overcome the traditional ADC's shortcoming that need double power. Foucusing on input signal range and power consumption optimization, while a gate voltage bootstrapped switch uhilized to ensures the ADC's precision. Design based on CSMC 0.5 μm 2P3M CMOS process. Simulating with Cadence Spectre shows 10 bit accuracy, conversion rate >10 Kb/s, input voltage range 0～5 V, INL <1/2 LSB, system power dissipation 2.636 mW was achieved in the case of 5 V supply.