Details
Presenter(s)
Display Name
Shenglong Zhuo
- Affiliation
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AffiliationState Key Laboratory of ASIC and System, Fudan University
- Country
Abstract
This paper presents an integrated pulsed laser driver in 180nm BCD process for indirect time-of-flight applications. Pulses with 4A peak current at a modulation frequency up to 200MHz can be generated. Automatic optical power control (AOPC) is realized for laser eye safety protection. A DLL-based time interpolator is proposed to eliminate the mechanical moving components used during system calibration. The measured absolute accuracy of the time interpolator is +/-50ps with a resolution of 800ps and tuning range of 49.6ns. This work effectively extends the measurement distance of the I-ToF system. The calibration efficiency is also improved with the proposed method.