dTOF	Direct time-of-flight
PLL	Phase-locked loop
DLL	Delay-locked loop
TDC	Time-to-digital converter
RO	Ring oscillator
LSB	Least mean square
DNL	differential nonlinearity
INL	integral nonlinearity
SiPM	Silicon photomultiplier
TCSPC	Time-correlated single-photon counting
TTTR	Time-tagged time-resolved
SNR	Signal-to-noise ratio
FOV	Field of view
AR	Augmented reality
VR	Virtual reality
PET	Positron emission tomography
FLIM	Fluorescence lifetime imaging
LiDAR	Light detection and ranging
ADAS	Advanced driver-assistance system
AV	Autonomous vehicles
FIFO	First-in-first-out
RMS	Root mean square
SPAD	Single-photon avalanche diode
PVT	Process-voltage-temperature
ROIC	Readout integrated circuit