7

Ranging performances

7.1

Measurement conditions

In all the measurement tables of this document, it is considered that:

•

All ranging performances are measured with the target covering the full FoV.

•

Targets used are Munsell N4.75 (17%), Munsell N8.25 (54%), and Munsell N9.5 (88%).

•

Nominal voltage is 2.8 V.

•

The device is controlled through the driver using the default settings.

•

Indoor (no IR) means that there is no contribution of light in the band 940 nm ± 30 nm.

•

Light, outdoor overcast corresponds to an ambient light level of 10 kcps/SPAD. For reference, this

corresponds to a 1.2 W/m2 at 940 nm following the AM1.5G spectrum. It is equivalent to 5 kLux of daylight

as reflected by a gray 17% chart at 40 cm.

•

No cover glass is present.

•

Typical and corner samples are used.

•

An offset correction is made at 100 mm from the sensor with a gray 17% target.

7.2

Minimum ranging distance

The minimum detection distance is 0 mm. The minimum ranging distance with a linear response is 1 mm.

7.3

Maximum ranging distance at nominal temperature

The table below shows the ranging specification for the VL53L4ED bare module. This is without a cover glass, at

room temperature (23°C), with nominal voltage (2.8 V), and the full FoV covered.

The timing budget enables control over the quantity of emitted signals. A higher timing budget results in the

emission of more signals, thereby increasing the temperature variation robustness. It is strongly recommended to

use a minimum timing budget of 100 ms to ensure consistent data over the temperature range. All measurements

have been made using 100 ms integration time.

Table 16. Nominal maximum ranging distance mode for typical parts (100 ms timing budget)

Target reflectance level, full FoV (reflectance %)

Indoor (detection rate %)

Outdoor detection rate (%)

White target (88%)

Typical: 1250 mm @ 90% min.

Typical: 1300 mm @ 50% min.

Typical: 750 mm @ 90% min.

Typical: 800 mm @ 50% min.

Light gray target (54%)

Typical: 950 mm @ 90% min.

Typical: 1000 mm @ 50% min.

Typical: 700 mm @ 90% min.

Typical: 750 mm @ 50% min.

Gray target (17%)

Typical: 450 mm @ 90% min.

Typical: 500 mm @ 50% min.

Typical: 400 mm @ 90% min.

Typical: 450 mm @ 50% min.

The detection rate is a statistical value indicating the worst case percentage of measurements that return a valid

ranging. For example, taking 1000 measurements with a 90% detection rate, gives 900 valid distances. The 100

other distances may be outside of the specification, and are flagged with an error status.

VL53L4ED

Ranging performances

DS14256 - Rev 3

page 20/39