摘要
逐次逼近模数转换器(SAR ADC)具有中等转换精度和速度,在精度、速度、功耗以及成本方面具有综合优势,且易于实现多路控制,广泛应用于工业控制、医疗仪器以及微控制器(MCU)等领域中。采用GSMC0.18μm1P6M CMOS混合信号工艺,设计了一款用于汽车电子MCU的16通道10bit1MHz逐次逼近模数转换器。测试结果表明,在电源电压1.8V,输入信号51kHz和1MHz时钟频率下,无杂散动态范围(SFDR)71.364dB,有效位数(ENOB)达到9.49bit,整体功耗2.24mW,满足汽车电子MCU的应用需求。
Successive approximation analog-to-digital converter（SAR ADC） has medium res- olution and speed. Due to its advantages in resolution, speed, power, cost and easiness to make multi-channel conversion, it is widely used in industry controlling, medical instruments and mi- cro control unit（MCU）. In this paper a 16 channels 10 bit 1 MHz SAR ADC is implemented in GSMC 0.18 μm 1P6M CMOS Mixed-Signal process for automobile electronics MCU. The mea- surement results show that in 1.8 V power supply, 51 kHz input frequency and 1 MHz clock fre- quency, the SFDR is 71. 364 dB, ENOB is 9.49 bit, total power is 2.24 roW, and meet the ap- plication requirement of automobile electronics MCU.
出处
《固体电子学研究与进展》
CAS
CSCD
北大核心
2013年第1期80-85,共6页
Research & Progress of SSE
基金
国家自然科学基金资助项目(61006023)
北京市自然基金资助项目(4123096)
关键词
逐次逼近
模数转换器
微控制器
数模转换器
successive approximation
analog-to-digital converter
MCU
digital-to-analogconverter
