NOA3315W中文资料数字距离传感器，带双环境光传感器和中断数据手册ONSEMI规格书

描述 Description

The NOA3315 combines an advanced digital proximity sensor and
LED driver with dual ambient light sensors (ALS) and tri−mode I2C
interface with interrupt capability in an integrated monolithic device.
Multiple power management features and very low active sensing
power consumption directly address the power requirements of battery
operated mobile phones and mobile internet devices.
The proximity sensor measures reflected light intensity with a high
degree of precision and excellent ambient light rejection. The
NOA3315 enables a proximity sensor system with a 16:1
programmable LED drive current range and a 30 dB overall proximity
detection range. The dual ambient light sensors include one with a
photopic light filter and one with no filter. Both have dark current
compensation and high sensitivity eliminating inaccurate light level
detection and insuring proper backlight control even in the presence of
dark cover glass.
The NOA3315 is ideal for improving the user experience by
enhancing the screen interface with the ability to measure distance for
near/far detection in real time and the ability to respond to ambient
lighting conditions to control display backlight intensity.

特性 Features

Proximity Sensor, LED Driver and Dual ALS in OneDevice
Very Low Power Consumption
These Devices are Pb−Free, Halogen Free/BFR Freeand are RoHS Compliant
Proximity detection distance threshold I2Cprogrammable with 12−bit resolution and eightintegration time ranges (16−bit effective resolution)
Effective for Measuring Distances up to 200 mm andBeyond
Excellent IR and Ambient Light Rejection includingSunlight (up to 50K lux) and CFL Interference
Programmable LED Drive Current from 10 mA to160 mA in 5 mA Steps, no External Resistor Required
User Programmable LED Pulse Frequency
Dual ALS senses ambient light and provides 16−bitoutput counts on the I2C bus directly proportional to theambient light intensity
Photopic Spectral Response of ALS1 Nearly MatchesHuman Eye
Broadband response of ALS2 supports compensationfor spectral shifts encountered with different types ofcover glass
Dynamic Dark Current Compensation
Linear Response over the Full Operating Range
3 ranges – 100 counts/lux, 10 counts/lux, 1 count/lux
Senses Intensity of Ambient Light from 0.02 lux to 52klux with 21−bit Effective Resolution (16−bit converter)
Programmable Integration Times (50 ms, 100 ms,200 ms, 400 ms)

应用 Application

Senses human presence in terms of distance and sensesambient light conditions, saving display power inapplications such as:♦ Smart phones, mobile internet devices, MP3 players,GPS♦ Mobile device displays and backlit keypads
Smart phones, mobile internet devices, MP3 players, GPSMobile device displays and backlit keypads