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专业光电传感器设计
生产销售一体化公司
EM30918
时间:2017-03-22 01:20 来源:市场部 作者:总编辑 点击:

Description

EM30918 is a low-power I2C interface 5in1 module includes Ambient Light Sensor (ALS), Long-Distance Proximity Sensor (PS), IR Sensors, and internal Current Drivers with IR VCSEL Diode. It is designed for applications such as smart phone and tablets with capacitive touch panel. 

EM30918 is application specific for custom-made products and no need of a controller to initialize and control. The gain and threshold values could be custom-made and detection result could automatically output. C interface 5in1 module includes Ambient Light Sensor (ALS), Long-Distance Proximity Sensor (PS), IR Sensors, and internal Current Drivers with IR VCSEL Diode. It is designed for applications such as smart phone and tablets with capacitive touch panel.

The device detects ambient light intensity in wide range when it is designed as ALS only. The ALS can be configured to work in 2 modes, low-light-mode and normal-light-mode. The ALS in normal-light-mode detection range is 4 times larger than in low-light-mode. To get more precise result of ambient light, the value of IR register should be deduct from the value of ALS register.

Proximity Sensor is designed to tolerant at least 2.0mm air gap. 850nm wavelength IR VCSEL Diode outputs IR light outwards and reflects to pixel arrays. The proximity sensor detects proximity with large amount of ambient light noise rejected. The range of up to 50K lux of ambient light noise can be rejected internally. In order to removing component variations and eliminate offset caused by IR reflection, EM30918 set 2 registers for compensation. 2048 steps programmable current driver is more flexible to remove component-to-component variation, and also increased dynamic range for PS detection.

Both ALS and PS can work simultaneously. All pixels are controlled by analog-MUX in different modes.

Features

Proximity Sensor with corner compensation, Long-Distance Proximity Sensor, Ambient Light Sensor, IR Sensor, 1 current drivers and IR VCSEL Diode integrated in a single Optical Module

Wide Spectrum Response of Ambient Light Sensor (ALS)

50Hz/60Hz Flicker Noise Rejection

IR sensor

Temperature Compensation

Higher Sensitivity of Proximity Sensing, Detecting Distance of 18% gray card up to 50CM

Proximity Sensor (PS) with Ambient Light Rejection

Proximity detect rates is up to 1000Hz

2048 Steps Programmable current driver for flexibility and removing component variations

More than 2 pixels for proximity detection compensation

Proximity detection in parallel for Long-Distance Proximity Detection

Preset mode for specific applications without MCU configuration

Offset register adjustment for compensation of IR reflection caused system offset

Programmable Interrupt for PS and ALS

Low Average Operation Power consumption

Output Type: I2C Bus (ALS/PS) up to 400K Hz

Operation Voltage 2.5V ~ 3.6V

Logic Interface Voltage VBUS=1.8V or VBUS=VDD

Minimum External Components

Package: (4.0mmX2.4mmX1.35mm)

RoHS package


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