Infrared Light Angle Sensor

Data Sheet

ADPD2140

Rev. 0

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FEATURES

2-axis light angle measurement

Linear response to the angle of incident light

Integrated visible light blocking optical filter

No optics required and no need for precise alignment

channels connected in parallel)

8-lead, 2 mm × 3 mm, 0.65 mm height, LFCSP

APPLICATIONS

Gesture for user interface control in portable devices

Object location tracking

Industrial and automation monitoring

Angle sensing

Proximity sensing

Object distance measurement (triangulation)

FUNCTIONAL BLOCK DIAGRAM

5

6

7

4

PDC

XR

XL

YB

YT

8

ADPD2140

Figure 1.

GENERAL DESCRIPTION

The ADPD2140 is an optical sensor that measures the angle of

incident infrared light. Light angles calculated from the ADPD2140

response are linear to ±5° within an angular field of view of ±35°.

low junction capacitance and low dark current of the ADPD2140

allows optimal integration with the ADPD1080 photometric

front end. The ADPD2140 can be used with a synchronous

infrared light source such as a light emitting diode (LED) to

detect user hand movements for gesture recognition. The

ADPD2140 requires four photodiode channels. Therefore, use

the ADPD1080BCPZ with the ADPD2140.

Packaged in a small, clear mold, 2 mm × 3 mm, 8-lead LFCSP,

the ADPD2140 is specified over the −40°C to +85°C operating

temperature range.