TMF8701-1XM datasheet(16/66 Pages) OSRAM

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Datasheet, Public

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[v2-00] 2023-Feb-21

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TMF8701 − Detailed Description

• Proximity and distance mode combined; it uses 80k + 320k

iterations at 43MHz for capturing.

The operating modes have different timings as shown in

following table:

Figure 17:

Algorithm Timings

Proximity Mode

The proximity algorithm reports a distance information in steps

of 1mm and the detect/release threshold can be tuned inside

the host. It especially can detect objects close to touch. For

proper operation of the proximity mode a cover glass with IR

ink is assumed.

Figure 18:

Proximity Mode Parameters

Note(s):

1. On the DUT or on the target; for close distances the target will shield ambient light.

2. 14k halogen light represents 100k sunlight equivalent

3. To detect a target at close distances, the algorithm relies on historical information. Therefore a grey or white target had to be present

previously at approximately 60mm for obtaining this information.

4. These exact numbers apply for a 18% reflectivity target; due to the short distance a full FOV object perpendicular to TMF8701 is

assumed.

Condition

Min

Nom

Max

Units

Proximity Mode only

command=0x02 or 0x03

cmd_data6=0x81

5.3

Proximity and Distance

Mode Combined

command=0x02 or 0x03

cmd_data6=0xA3

16.6

Condition

Min

Nom

Max

Units

Reflectivity of Object at

940nm

Full FOV target assumed

Ambient Light

Halogen light(1)

14k(2)

lux

Object Detected

1.0(3)

20(4)

Object Released

60(4)

Difference Object Detected /

Object Released

Appropriate but fixed

thresholds for detect /

release in the host

assumed

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