?ADI公司的ADPD2140W是能檢測入射紅外光角度的光學傳感器,和紅外LED一起能檢測用戶手的運動和手勢.具有2軸光角度測量,?工作溫度?40°C到+105°C,主要用在用戶接口控制的手勢控制,光角度檢測和接近檢測.本文介紹了ADPD2140W主要特性,功能框推,?ADPD2140W和ADPD1080連接圖,以及評估板EVAL-ADPD2140Z主要特性,電路圖和PCB設計圖.

?The ADPD2140W is an optical sensor that detects and measures the angle of incident infrared light within a wide field of view and can be used in conjunction with an infrared light emitting diode (LED) to detect user hand movements or gestures.

The ADPD2140W has an illuminated, radiant sensitive area of 0.363 mm2. The low diode capacitance and low dark current of the ADPD2140W allows optimal integration with the ADPD1080 photometric front end. The ADPD2140W requires four photodiode channels. Therefore it is recommended to use the ADPD1080BCPZ with the ADPD2140W.

Packaged in a small, clear mold, 2 mm × 3 mm, 8-lead LFCSP, the ADPD2140W is specified over the ?40°C to +105°C operating temperature range.

ADPD2140W主要特性:

2-axis light angle measurement

Linear response to the angle of incident light

Integrated visible light blocking optical filter

No external lens required

Low diode capacitance: 15.4 pF per channel at VR = 0.25 V

Low reverse dark current: 786 fA per channel at VR = 0.25 V, TA = 25°C

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

AEC-Q100 qualified for automotive applications

ADPD2140W應用:

Gesture for user interface control

Light angle sensing

Proximity sensing
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圖1.?ADPD2140W功能框圖
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圖2.?ADPD2140W和ADPD1080連接圖

評估板EVAL-ADPD2140Z

?The EVAL-ADPD2140Z evaluation kit allows users to interface with the ADPD2140 infrared (IR) light angle sensor, collect data from the ADPD2140, and evaluate gesture recognition and triangulation capabilities. The evaluation kit requires the EVAL-ADPDM3Z evaluation board and the Applications Wavetool, a graphical user interface (GUI) that provides users with low level and high level config- urability, real-time data analysis, and user datagram protocol (UDP) transfer capability, which allows the EVAL-ADPDM3Z evaluation board to interface to a PC. The Applications Wavetool can be downloaded from the EVAL-ADPD2140Z evaluation board product page. The USB port of the PC powers the EVAL-ADPDM3Z evaluation board and provides power to the EVAL-ADPD2140Z evaluation board. On-board voltage regulators provide voltage supplies for the ADPD2140. The EVAL-ADPD2140Z evaluation board schematic indicates signal names for easy identification (see Figure 12). Full specifications for the ADPD2140 are available in the ADPD2140 data sheet, which should be consulted in conjunction with this user guide when working with the EVAL-ADPD2140Z evaluation board.

評估板EVAL-ADPD2140Z主要特性:

ADPD2140 full configuration

Register level

Parameter level

Graph views

Time series view

Gesture recognition view

Triangulation view

UDP transfer capability
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圖2.?評估板EVAL-ADPD2140Z外形圖
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圖3.?評估板EVAL-ADPD2140Z電路圖
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圖4.?評估板EVAL-ADPD2140Z?PCB設計布局圖
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