Time-of-Flight sensor. VL53L1X Datasheet

VL53L1X sensor. Datasheet pdf. Equivalent

Part VL53L1X
Description long distance ranging Time-of-Flight sensor
Feature VL53L1X A new generation, long distance ranging Time-of-Flight sensor based on ST’s FlightSense™ te.
Manufacture STMicroelectronics
Datasheet
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VL53L1X
VL53L1X
A new generation, long distance ranging Time-of-Flight sensor
based on ST’s FlightSense™ technology
Datasheet - production data
Features
Fully integrated miniature module
– Size: 4.9x2.5x1.56 mm
– Emitter: 940 nm invisible laser (Class1)
– SPAD (single photon avalanche diode)
receiving array with integrated lens
– Low-power microcontroller running advanced
digital firmware
Pin-to-pin compatible with the VL53L0X
FlightSense™ ranging sensor
Fast and accurate long distance ranging
– Up to 400 cm distance measurement
– Up to 50 Hz ranging frequency
Typical full field-of-view (FoV): 27 °
Programmable region-of-interest (ROI) size on
the receiving array, allowing the sensor FoV to be
reduced
Programmable ROI position on the receiving
array, providing multizone operation control from
the host
Easy integration
– Single reflowable component
– Can be hidden behind many cover window
materials
– Software driver and code examples for
turnkey ranging
– Single power supply (2v8)
– I²C interface (up to 400 kHz)
– Shutdown and interrupt pins
Applications
User detection (Autonomous low-power mode) to
power on/off and lock/unlock devices like
personal computers/laptops and the IoT
Service robots and vacuum cleaners (long
distance and fast obstacle detection)
Drones (landing assistance, hovering, ceiling
detection)
Smart shelves and vending machines (goods
inventory monitoring)
Sanitary (robust user detection whatever the
target reflectance)
Smart building and smart lighting (people
detection, gesture control)
1 D gesture recognition
Laser assisted autofocus which enhances the
camera autofocus system speed and robustness,
especially in difficult scenes (low light and low
contrast) and video focus tracking assistance
Description
The VL53L1X is a state-of-the-art, Time-of-Flight
(ToF), laser-ranging sensor, enhancing the ST
FlightSense™ product family. It is the fastest
miniature ToF sensor on the market with accurate
ranging up to 4 m and fast ranging frequency up to
50 Hz
Housed in a miniature and reflowable package, it
integrates a SPAD receiving array, a 940 nm
invisible Class1 laser emitter, physical infrared
filters, and optics to achieve the best ranging
performance in various ambient lighting conditions
with a range of cover window options.
Unlike conventional IR sensors, the VL53L1X uses
ST’s latest generation ToF technology which allows
absolute distance measurement whatever the target
color and reflectance.
It is also possible to program the size of the ROI on
the receiving array, allowing the sensor FoV to be
reduced.
November 2018
This is information on a product in full production.
DocID031281 Rev 3
1/35
www.st.com



VL53L1X
Contents
Contents
VL53L1X
1 Product overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1 Technical specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 System block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.3 Device pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.4 Application schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2 Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1 System functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2 System state machine description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.3 Customer manufacturing calibration flow . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.4 Ranging description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.5 Key parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.5.1 Distance mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.5.2 Timing budget (TB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.6 Power sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.6.1 Power up and boot sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.7 Ranging sequences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.8 Sensing array optical center . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3 Ranging performances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.1 Test conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.2 Accuracy, repeatability, and ranging error definitions . . . . . . . . . . . . . . . . 16
3.2.1 Accuracy definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.2.2 Repeatability definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.2.3 Ranging error definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.3 Minimum ranging distance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.4 Performances in dark conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.5 Performances in ambient light conditions . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.5.1 Long distance mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.5.2 Short distance mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.6 Performances in partial ROI in dark conditions . . . . . . . . . . . . . . . . . . . . 18
2/35 DocID031281 Rev 3





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