STMicroelectronics VL53L0CXV0DH/1 Time‑of‑Flight Ranging Sensor – Analysis

1. Product Overview

The VL53L0CXV0DH/1 is a high‑performance Time‑of‑Flight (ToF) ranging sensor from STMicroelectronics, belonging to the VL53L0X family. It leverages ST's second‑generation FlightSense™ patented technology and integrates an advanced SPAD (Single Photon Avalanche Diode) array with a 940 nm VCSEL (Vertical Cavity Surface Emitting Laser) source. The 940 nm laser is completely invisible to the human eye, and together with the built‑in physical infrared filter, the sensor achieves longer ranging distances and superior ambient light immunity.

The VL53L0CXV0DH/1 comes in an LGA‑12 package measuring only 4.4 × 2.4 × 1.0 mm, making it one of the smallest ToF ranging modules on the market. It supports an I²C digital interface, operates from 2.6 V to 3.5 V, and has a working temperature range of –20 °C to +70 °C. Its typical operating current is 19 mA, and it features automatic self‑calibration.

2. Key Parameter Summary

Parameter	Specification
Model	VL53L0CXV0DH/1
Manufacturer	STMicroelectronics
Package	LGA‑12
Dimensions	4.4 × 2.4 × 1.0 mm
Ranging Range	Up to 200 cm (2 m)
Ranging Accuracy Within	±3 %
Measurement Time	< 30 ms
Output Interface	I²C
Supply Voltage	2.6 V ~ 3.5 V
Operating Current	19 mA (typical)
Operating Temperature	–20 °C ~ +70 °C
Light Source	940 nm VCSEL
Laser Safety Class Class	1 (IEC 60825‑1:2014)
Lifecycle Status	Active

3. Frequently Asked Questions
Q: How does the VL53L0CXV0DH/1 differ from traditional infrared ranging sensors?

A: Traditional infrared sensors rely on target reflectance, so objects of different colours or materials can cause significant measurement errors. In contrast, the VL53L0CXV0DH/1 uses the time‑of‑flight principle – it calculates absolute distance by measuring the time from laser emission to its reflection. The measurement is independent of target reflectance, providing stable and accurate distance data regardless of whether the target is black, white, or even transparent.

Q: What are the main application scenarios for this sensor?

A: The VL53L0CXV0DH/1 is highly versatile and finds use in many fields:

Consumer electronics: proximity detection in smartphones/tablets, laser‑assisted auto‑focus for cameras.

Robotics: obstacle avoidance, wall‑following, cliff detection.

Smart home and appliances: gesture detection for automatic faucets and soap dispensers, path planning for robotic vacuum cleaners.

Industrial and IoT: inventory management, liquid‑level monitoring, user presence detection for energy‑saving controls.

Access control: system activation and presence detection.

Q: How design‑friendly is this device for engineers?

A: The VL53L0CXV0DH/1 offers a high level of integration – it is a fully integrated miniature module that includes the VCSEL driver, ranging sensor, and embedded microcontroller. Engineers do not need to add external optical components; it operates from a single supply. Moreover, it supports an I²C interface with programmable I²C address and interrupt GPIO, enabling seamless connection with various MCUs.

4. Conclusion
As a key member of STMicroelectronics' FlightSense™ family, the VL53L0CXV0DH/1 stands out with its ultra‑compact package, high‑precision ranging, immunity to ambient light, and low power consumption. It has become an ideal choice for distance‑sensing applications in consumer electronics, robotics, smart home, and industrial control. Its Class 1 eye‑safety rating and easy‑to‑integrate design further lower the development barrier, providing a solid technical foundation for innovative applications.

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