产品规格: |
16 |
产品数量: |
90000.00 pcs |
包装说明: |
2500/包 |
价格说明: |
不限 |
查看人数: |
256 人 |
本页链接: |
https://info.b2b168.com/s168-57013793.html |
深圳市政鸿微电子有限公司
TAOS专为智能3G手机特别是全触摸屏手机,专案研发出一系列的I2C光接近传感器,TMD27711,TMD27713三合一距离传感器是(IRLED + ALS + PROXIMITY) 并在一起。好处是把发射LED的公差减至较低,同时有高感度侦测环境光功能。其主要功能在于根据环境光调节背光亮度,手机在通话状态下靠近人脸时关闭背光,并且能防止通话中手指头误触屏摸,而导致操作失误。
该型号传感器具有耗能低,兼容性强,可兼容任何手机软件平台,设计简便等特点。
Description
The TMD2771 family of devices provides digital ambient light sensing (ALS), a complete proximitydetection system, and digital interface logic in a single 8-pin package. The proximity detector
includes a digital proximity sensor, LED driver, and IR LED, which are trimmed to eliminate the
need for end-equipment calibration due to component variations. Excellent background light
rejection allows the device to operate in environments from sunlight to dark rooms. The wide dynamic range allows for operation in short distance detection such as a cell phone (behind dark
glass). An internal state machine provides the ability to put the device into a low-power mode inbetween ALS and proximity measurements, providing very low average power consumption.
The device is particularly useful for display management with the purpose of extending battery 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 areideal for use in notebook PCs, LCD monitors, flat-panel televisions, and cell phones.
The proximity function specifically targets 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 device, provide highly efficient transmission and reception of infrared energy,which lowers overall power dissipation.
以上是TMD27711的基本介绍,需要了解更多信息,欢迎大家来电咨询!联系人:何小姐
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