TSSP940..

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Vishay Semiconductors

Rev. 1.5, 22-Nov-2022

4

Document Number: 82843

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Fig. 7 - Relative Spectral Sensitivity vs. Wavelength

Fig. 8 - Directivity

Fig. 9 - Sensitivity vs. Supply Voltage

The typical application of these devices is a reflective or

beam break sensor with active low “detect” or “no detect”

information contained in its output. The TSSP940.. is also

suitable for fast (~ 15 ms) proximity sensor applications for

ranges between 10 cm and 2 m, if a burst pattern with

variable intensity is used.

Example for a sensor hardware:

There should be no common window in front of the emitter

and detector in order to avoid crosstalk via guided light

through the window.

10

100

1000

10000

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

750

850

950

1050

1150

Axis Title

λ - Wavelength (nm)

21425

96 12223p2

0.4

0.2

0

0.6

0.9

0°

30°

10°

20°

40°

50°

60°

70°

80°

1.0

0.8

0.7

drel - Relative Transmission Distance

10

100

1000

10000

0

0.2

0.4

0.6

0.8

1.0

1.0

1.5

2.0

2.5

3.0

3.5

4.0

Axis Title

V

S - Supply Voltage (V)

TSSP940xxZ3

TSSP940xx

IR emitter

IR detector

Separation to avoid

crosstalk by stray light inside

the housing