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该TMD2771系列器件提供数字环境光感应(ALS),一个完整的接近检测系统,以及数字接口逻辑在一个8引脚封装。接近度检测器包括数字接近传感器,LED驱动器,和红外的LED,其被修整以消除需要为终端设备校准由于元件的差异。出色的背景光拒绝允许在环境免受阳光操作以黑暗的房间设备。宽动态范围允许在短距离检测操作诸如蜂窝电话(后面深色玻璃)。内部状态机提供了把设备进入低功耗模式的能力在ALS和接近测量之间,提供了非常低的平均功耗。
- Ambient Light Sensing, ProximityDetection, and IR LED in a Single OpticalModule
- Ambient Light Sensing (ALS)
- Approximates Human Eye Response
- Programmable Analog Gain
- Programmable Integration Time
- Programmable Interrupt Function withUpper and Lower Threshold
- Up to 16 Bits Resolution
- Very High Sensitivity — Operates Behind Darkened Glass
- Up to 1,000,000:1 Dynamic Range
- Proximity Detection
- Calibrated to 100-mm Detection
- Eliminates Factory Calibration of Prox
- Programmable Number of IR Pulses
- Programmable Current Sink for the IR LED — No Limiting Resistor Needed
- Programmable Interrupt Function withUpper and Lower Threshold
- Programmable Wait Timer
- Wait State — 65 A Typical Current
- Programmable from 2.72 ms to > 8 Seconds
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