A 40-ps Resolution Robust Continuous Running VCRO-Based TDC for LiDAR Applications

被引：6

作者：

Hu, Jin ^{[1
]}

Li, Dong ^{[1
]}

Wang, Xiayu ^{[1
]}

Ma, Rui ^{[1
]}

Liu, Yang ^{[1
]}

Zhu, Zhangming ^{[1
]}

机构：

[1] Xidian Univ, Sch Microelect, Shaanxi Key Lab Integrated Circuits & Syst, Xian 710071, Peoples R China

来源：

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS | 2023年 / 70卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Delays; Voltage control; Laser radar; Phase noise; Manganese; Jitter; Detectors; TDC; LiDAR; continuous running VCRO; error-free; CMOS; SENSOR;

D O I：

10.1109/TCSII.2022.3213849

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This brief presents a robust continuous running voltage-controlled ring oscillator-based (VCRO-based) time to digital converter (TDC) for Light Detection and Ranging (LiDAR) applications. A robust two-counter method with a hybrid structure counter is proposed to avoid any sampling errors due to metastability and delay accumulation. To reduce the TDC dead time, a two-interleaved sampling channel is adopted. Compared to the prior methods, the proposed structure is free from sampling errors. The proposed TDC has been fabricated in 180-nm CMOS technology. Measurement results show that the error rate is negligible. The peak-to-peak INL and DNL are of 2.08 LSB and 0.46 LSB, respectively.

引用

页码：426 / 430

页数：5

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