A High-Resolution Time-Based Resistance-to-Digital Converter with TDC and Counter

被引：0

作者：

Nakagawa, Shuya ^{[1
]}

Horikoshi, Kaito ^{[1
]}

Ishikuro, Hiroki ^{[1
]}

机构：

[1] Keio Univ, Dept Elect Engn, Yokohama, Kanagawa, Japan

来源：

2018 IEEE 61ST INTERNATIONAL MIDWEST SYMPOSIUM ON CIRCUITS AND SYSTEMS (MWSCAS) | 2018年

关键词：

Time-based ADC; time-to-digital conveter; resistance-to-digital converter; sensor;

D O I：

暂无

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

This paper presents a high resolution time-based resistance-to-digital converter for amp-less high-precision sensor application. In order to solve the trade-off between resolution and bandwidth, a time-to-digital converter (TDC) is combined with a resistance-controlled-oscillator. The TDC is used to measure the fractional part of oscillation period, which realize a high resolution and conversion rate with moderate oscillation frequency. Proposed fractional period estimation technique reduce the required number of TDC and save power consumption. A prototype system was developed and 23 ppm resolution of resistance change at conversion rate of 5kSps was experimentally demonstrated.

引用

页码：242 / 245

页数：4