TSL260, TSL261, TSL262

IR LIGHT TOVOLTAGE OPTICAL SENSORS

TAOS021 – MAY 2000

6

www.taosinc.com

t

t

Copyright

E 2000, TAOS Inc.

APPLICATION INFORMATION

NOTE A: Output pulses low until beam is interrupted. Useful range is 1 ft to 20 ft; can be extended with lenses. This configuration is suited

for object detection, safety guards, security systems, and automatic doors.

TSL262

Sensor

Output

50 k

Ω

5 V

2

3

1

+

–

4

5 V

4.7 k

Ω

15-k

Ω

TLC372

1

8

3

2

100 k

Ω

5 V

0.01

µF

Threshold

TLC555

4

3

1

5 V

8

27 k

Ω

7

6

2

3 k

Ω

0.01

µF

2N3906

18

Ω

Figure 9. Pulsed Optical-Beam Interrupter

NOTE A: Output goes low when light pulses from emitter are reflected back to sensor. Range is 6 in to 18 in depending upon object

reflectance. Useful for automatic doors, annunciators, object avoidance in robotics, automatic faucets, and security systems.

or

560 k

Ω

TSL260

Sensor

6 V

2

3

1

0.1

µF

NE567

4

1 k

Ω

270 k

Ω

0.1

µF

4.7

µF

1

µF

0.1

µF

10 k

Ω

100

Ω

+

+

3

27

1

8

Light

Shield

2N3904

0.01

µF

5

6

Figure 10. Proximity Detector