User manual

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VL6180X Performance specification
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4 Performance specification
4.1 Proximity ranging (0 to 100mm)
The following table specifies ranging performance up to 100mm. Ranging beyond 100mm is
possible with certain target reflectances and ambient conditions but not guaranteed. These
results are derived from characterization of both typical and corner samples (representative
of worst case process conditions).
Unless specified otherwise, all results were performed at room temperature (23°C), nominal
voltage (2.8V) and in the dark. Results are based on the average of 100 measurements for
a 17% reflective target @ 50mm.
4.1.1 Max range vs. ambient light level
The data shown in this section is worst case data for reference only.
Table 20 shows the worst case maximum range achievable under different ambient light
conditions
.
Table 19. Ranging specification
Parameter Min. Typ. Max. Unit
Noise
(1)
1. Maximum standard deviation of 100 measurements
- - 2.0 mm
Range offset error
(2)
2. Maximum offset drift after 3 reflow cycles. This error can be removed by re-calibration in the final system
--13mm
Temperature dependent drift
(3)
3. Tested over optimum operating temperature range (see Table 16.: Normal operating conditions)
-915mm
Voltage dependent drift
(4)
4. Tested over optimum operating voltage range (see Table 16.: Normal operating conditions)
-35mm
Convergence time
(5)
5. Based on a 3% reflective target @ 100 mm
--15ms
Table 20. Worst case max range vs. ambient 0 to 100mm
(1)(2)
1. Tested in an integrating sphere (repeatable lab test, not representative of real world ambient light) at 1
kLux and 5 kLux (halogen light source) using 80 x 80 mm targets. Due to high IR content, 5 kLux halogen
light approximates to 10 kLux to 15 kLux natural sunlight.
2. SNR limit of 0.1 applied. Note: maximum range could be increased by reducing the SNR limit to 0.06
Target
reflectance
In the dark
(3)
3. Also applicable to lighting conditions with low IR content e.g typical office fluorescent lighting
Worst case indoor light
(1 kLux diffuse halogen)
High ambient light
(5 kLux diffuse halogen)
Unit
3% > 100 > 80 > 40 mm
5% > 100 > 90 > 45 mm
17% > 100 > 100 > 60 mm
88% > 100 > 100 > 70 mm