文章摘要
魏琦,韩丹丹,杨华中.采用预充开关运放的低功耗12位40MS/s流水线模数转换器[J].高技术通讯(中文),2010,20(3):292~297
采用预充开关运放的低功耗12位40MS/s流水线模数转换器
A low power 12 bit 40MS/s pipelined ADC with pre charged switched operational amplifier
  
DOI:
中文关键词: 流水线, 模数转换器(ADC), 开关运算放大器
英文关键词: pipeline, analog to digital converter (ADC), switched operational amplifier
基金项目:863计划(2006AA01Z224)和国家自然科学基金(90307016)资助项目
作者单位
魏琦 清华大学电子工程系电路与系统研究所;清华大学信息国家实验室 
韩丹丹 清华大学电子工程系电路与系统研究所;清华大学信息国家实验室 
杨华中 清华大学电子工程系电路与系统研究所;清华大学信息国家实验室 
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中文摘要:
      设计了一个采用新型预充快速开启开关运放的低功耗12位40MS/s流水线模数转换器(ADC)。该转换器通过采用新型预充开关运放技术、采样保持电路消去结构、动态比较器和优化采样电容,大大降低了电路的功耗。电路设计采用18V 1P6M 018μm CMOS工艺,仿真结果表明,在40MS/s采样速率下,输入信号为19MHz时,无杂散动态范围(SFDR)为9015dB,信噪失真比(SNDR)为7298dB,功耗为279mW。
英文摘要:
      This paper presents a 12 bit 40Msample/s low power pipelined analog to digital converter (ADC) with a novel pre charged fast power on switched operational amplifier. The converter's low power consumption is realized by using the novel pre charged fast power on switched operational amplifier technique, the sample and hold amplifier (SHA) less architecture, the dynamic comparator and the optimization of the sampling capacitor size. The ADC is designed in a 18V 1P6M 018μm CMOS process. The simulation results indicate that the ADC exhibits the spurious free dynamic range (SFDR) of 9015dB, the signal to noise and distortion ratio (SNDR) of 7298dB and a power consumption of 279mW when the frequency of its analog input signal is 19MHz.
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