A 3-dimensional Modified Vernier Time-to-digital Converter for LiDAR Sensors
- 주제(키워드) DLL , edge-detector , LiDAR sensor , T-latch , Vernier TDC
- 주제(기타) Engineering, Electrical & Electronic
- 주제(기타) Physics, Applied
- 설명문(일반) [He, Ying; Joo, Ji-Eun; Park, Sung Min] Ewha Womans Univ, Dept Elect & Elect Engn, Seoul, South Korea; [Joo, Ji-Eun; Park, Sung Min] Ewha Womans Univ, Smart Factory Multidisciplinary Program, Seoul, South Korea
- 등재 SCIE, SCOPUS, KCI등재
- 발행기관 IEEK PUBLICATION CENTER
- 발행년도 2020
- 총서유형 Journal
- URI http://www.dcollection.net/handler/ewha/000000175413
- 본문언어 영어
- Published As http://dx.doi.org/10.5573/JSTS.2020.20.6.543
초록/요약
This paper presents a three-dimensional (3-D) modified Vernier time-to-digital converter (MV-TDC) for the applications of light detection and ranging (LiDAR) sensors. The proposed 3-D MV-TDC combines a 2-D modified Vernier TDC and a delay-lock loop (DLL) that is preceded by an XOR and an edge-detector as its input circuitry, so that the former provides 4-bit coarse digital codes while the latter generates 4-bit fine codes during the high-state of DLL that is maintained only between each rising edge of START and STOP pulses. Then, the measured detection range of a LiDAR sensor can be represented by an 8-bit digital code. The proposed 3-D MV-TDC were implemented in a 0.13-mu m CMOS process, demonstrating the measured dynamic range of 43.2 dB that corresponds to the detection range of 18.8 centimeters similar to 28.6 meters. The chip dissipates 2.9 mW from a single 1.2-V supply, while its core occupies the area of 0.37 x 0.89 mm(2).
more