VL53L1 datasheet(16/35 Pages) STMICROELECTRONICS

16 / 35 page

Ranging performances

VL53L1X

16/35

DocID031281 Rev 3

3.2

Accuracy, repeatability, and ranging error definitions

3.2.1

Accuracy definition

Accuracy = mean distance – actual distance

•

Mean distance is the average of 32 measured distances

•

Actual distance is the actual target distance

Accuracy can be affected by an offset error, a temperature drift, and a voltage drift.

3.2.2

Repeatability definition

Repeatability is the standard deviation of the mean ranging value of 32 measurements. It

can be improved by increasing the timing budget. A typical repeatability value for VL53L1X

is from ±1 % to ±0.15 % depending on the timing budget and the ambient light.

3.2.3

Ranging error definition

Ranging error = accuracy + repeatability error.

This ranging error value is our metrics in the following performances tables.

3.3

Minimum ranging distance

The minimum ranging distance is 4 cm. Under this minimum distance, the sensor will detect

a target, but the measurement will not be accurate.

3.4

Performances in dark conditions

Test conditions (including those described in Section 3.1: Test conditions) are:

•

Ambient light = dark

•

Timing budget = 100 ms unless mentioned

•

Long distance mode

Table 6. Performances in dark conditions

Parameter

Target reflectance

Min. value

Typ. value

Max distance (cm)

White 88 %

260

360

(400 with TB = 140 ms)

Grey 54 %

220

340

Grey 17 %

170

Ranging error (mm)

± 20

VL53L1 데이터시트(PDF) 16 Page - STMicroelectronics

VL53L1 데이터시트(HTML) 16 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35

데이터시트 다운로드

링크 URL