一种用于测量系统的无输入阻抗变换的16位64通道ADC

2019 IEEE International Conference on Electron Devices and Solid-State Circuits (EDSSC) Pub Date : 2019-06-12 DOI:10.1109/EDSSC.2019.8754034

Guangyi Chen, Xueyou Shi, Dahe Liu, Wengao Lu, Zhongjian Chen

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引用次数: 0

摘要

介绍了一种适用于多传感器测量系统的多路16位64通道ADC。为了与多类型传感器直接接口，无需传统设计中使用的输入阻抗变换缓冲器。采用双信号处理路径架构和数据融合算法对信号进行调理和量化。通过上述解决方案，该ADC节省了大量的功耗和面积成本，因此可以实现更多的通道和更容易的系统集成。采用0.18μm CMOS工艺设计了原型电路。仿真结果表明:98。2dB总谐波失真(THD)和14.8位ENOB，在IMSPS下满量程输入。

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A 16-bit 64-channel ADC without Input Impedance Transformation for Measurement System

A multiplexed 16-bit 64-channel ADC for multi-sensors measurement system is presented. In order to directly interface with multi-type sensors without input impedance transformation buffers used in conventional designs. A dual signal-processing path architecture and a data fusion algorithm are utilized in this work for signal conditioning and quantization. Through the above solutions, this ADC saves considerable amount of power consumption and area cost, therefore enables much more channels and easier system integration. A prototype circuit has been designed in 0.18μm CMOS process. Simulation results reveal 98. 2dB total harmonic distortion (THD) and 14.8-bit ENOB with full-scale input at IMSPS.

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2019 IEEE International Conference on Electron Devices and Solid-State Circuits (EDSSC)

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