Datasheet

Page 16 ams Datasheet
Document Feedback [v1-08] 2020-Jun-29
TMF8701 − Detailed Description
Proximity and Distance Mode Combined
In the combined operating mode, proximity algorithm is run
first followed by distance algorithm. An object detected in
proximity mode has priority over an object detected in distance
mode.
The distance algorithm reports a distance information of the
closest object in 1mm steps.
Figure 19:
Distance Mode Parameters
Note(s):
1. 14k lux halogen light represents 100k lux sunlight equivalent; light on object only.
2. If proximity mode detects an object within ≤ 100mm, it is reported. Only if proximity mode does not detect an object, distance
mode result is used. Therefore the full range starting from minimum proximity distance (1mm) to maximum distance for distance
mode (600mm) is covered.
VCSEL
Internal protection ensures no single point of failure will cause
the VCSEL to violate the Class 1 Laser Safety.
Laser Safety: Class 1
VCSEL Pulse Rep. Rate: 23ns (43MHz)
Condition Min Nom Max Units
Reflectivity of Object at
940nm
20cmx26cm target,
perpendicular to TMF8701
18 90 %
Maximum Distance
Detection, 18% Grey Card,
20cmx26cm
<350 lux fluorescent on
object
600 mm
14k lux halogen light on
object
(1)
350 mm
Minimum Distance
Detection, 18% Grey Card,
20cmx26cm
(2)
60 100 mm
Accuracy
Object distance ≥ 200mm ±5 %
100mm< object distance
<200mm
±10 mm