TMF8701 datasheet(17/66 Pages) AMSCO

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[v2-00] 2023-Feb-21

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

Maximum Distance

Detection, 18% Grey Card,

20cmx26cm

<350 lux fluorescent on

object

600

14k lux halogen light on

object(1)

350

Minimum Distance

Detection, 18% Grey Card,

20cmx26cm(2)

100

Accuracy

Object distance ≥ 200mm

±5

100mm< object distance

<200mm

±10

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