VCNL3020

www.vishay.com

Vishay Semiconductors

Rev. 1.0, 25-Jun-12

4

Document Number: 84150

THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT

Fig. 7 - Relative Spectral Sensitivity vs. Wavelength

(Proximity Sensor)

Fig. 8 - Relative Radiant Sensitivity vs. Angular Displacement

(Proximity Sensor)

APPLICATION INFORMATION

access “Proximity Signal” without complex calculation and programming by external controller. Beside the digital output also

a flexible programmable interrupt pin is available.

1. Application Circuit

Fig. 9 - Application Circuit

(x) = Pin Number

Note

• The interrupt pin is an open drain output. The needed pull-up resistor may be connected to the same supply voltage as the application

controller and the pull-up resistors at SDA/SCL. Proposed value R2 should be >1 k

Ω , e.g. 10 kΩ to 100 kΩ.

Proposed value for R3 and R4, e.g. 2.2 k

For detailed description about set-up and use of the interrupt as well as more application related information see AN: “Designing VCNL3020

into an Application”.

1.1

0

0.2

0.4

0.6

0.8

0.9

1.0

0.1

0.3

0.5

0.7

1100

400

500

600

700

800

900

1000

λ - Wavelength (nm)

22307

0°

20°

40°

60°

80°

0.6

0.7

0.8

0.9

1.0

0

0.1

0.2

0.3

0.4

0.5

22308

22312-4

Host

Micro Controller

I

I

VCNL3020

INT (3)

SCL (4)

SDA (2)

GND (8, 9)

V

IR_Anode (1)

C1

C2

C3

C4

R1

100 nF

100 nF

10 μF

22 μF

10R

GPIO

2.5 V to 3.6 V

2.5 V to 5.0 V

1.7 V to 5.0 V

R2

R3 R4