APDS-9921，安华高小孔距传感器

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Description

  The APDS-9921 provides digital ambient light sensing (ALS), IR  LED and  a  complete  proximitydetection system in a single 8 pin package that is suitable to be used under a small aperture of the devices’ cover windows. The proximity function offers plug and play detection to 30 mm thus eliminating the need for factory calibration of the end equipment or sub-assembly. The proximity detection feature operates well from bright sunlight to dark rooms. The wide dynamic range also 
allows for operation in short distance detection behind dark glass such as a cell phone.

  The ALS provides a photopic response to light intensity in very low light condition or behind adark faceplate. APDS-9921 approximates the response of the human-eye providing direct read  out, where the output count is pro-portional to ambient light level. Low light functionality enables 
operation behind darkened glass. The APDS-9921 supports programmable hardware interrupt with hyster-esis to respond to events.

 The APDS-9921 is particularly useful for display  man-agement  with  the  purpose  of  extendingbattery life and providing optimum viewing in diverse lighting conditions.  Display  panel  and 
keyboard backlighting can account for up to 30 to 40 percent of total platform power. The  ALS 
features are ideal for use in notebook PCs, LCD monitors, flat-panel televisions, and cell phones

   The proximity function is targeted specifically towards near field proximity applications. In cell phones, the proximity detection can detect when the user positions the phone close to their ear. The device is fast enough to provide proximity information at a high repetition rate needed when answering a phone call. This provides both improved “green” power saving capability and 
the added security to lock the computer when the user is not present. The addition of the micro-optics lenses within the module, provide highly efficient transmission and reception of infrared 
energy which lowers overall power dissipation.

Ordering Information

Part Number	Packaging	Quantity
		
APDS-9921	Tape & Reel	2500 per reel

Applications

?Cell Phone Backlight Dimming

?Cell Phone Touch-screen Disable

?Notebook/Monitor Security

?Automatic Speakerphone Enable

?Automatic Menu Pop-up

Digital Camera Eye Sens

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