NOA3302 Datasheet, PDF (1/23 Pages) ON Semiconductor – Digital Proximity Sensor

NOA3302
Digital Proximity Sensor
with Ambient Light Sensor
and Interrupt
Description
The NOA3302 combines an advanced digital proximity sensor and
LED driver with an ambient light sensor (ALS) and tri−mode I²C
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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
1
operated mobile phones and mobile internet devices.
CWDFN8
The proximity sensor measures reflected light intensity with a high
degree of precision and excellent ambient light rejection. The
CU SUFFIX
CASE 505AJ
NOA3302 enables a proximity sensor system with a 32:1
programmable LED drive current range and a 30 dB overall proximity
PIN CONNECTIONS
detection threshold range. The photopic light response, dark current
compensation and high sensitivity of the ambient light sensor
VDD 1
8 SCL
eliminates inaccurate light level detection, insuring proper backlight
control even in the presence of dark cover glass.
VSS 2
7 SDA
The NOA3302 is ideal for improving the user experience by
LED_GND 3
6 NC
enhancing the screen interface with the ability to measure distance for
near/far detection in real time and the ability to respond to ambient
LED 4
5 INT
lighting conditions to control display backlight intensity.
(Top View)
Features
• Proximity Sensor, LED driver and ALS in One Device
ORDERING INFORMATION
• Very Low Power Consumption
♦ Stand−by Current 5 mA (monitoring I²C interface only,
V_DD = 3 V)
♦ ALS Operational Current 50 mA
♦ Proximity Sensing Average Operational Current 100 mA
♦ Average LED Sink Current 75 mA
Proximity Sensing
Device
Package
Shipping^†
NOA3302CUTAG* CWDFN8
(Pb−Free)
2500 /
Tape & Reel
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
*Temperature Range: −40°C to 80°C.
• Proximity Detection Distance Threshold I²C Programmable with
12−bit Resolution and Four integration Time Ranges
(15−bit effective resolution)
• Effective for Measuring Distances up to 100 mm and
• Photopic Spectral Response Nearly Matches Human Eye
Beyond
• Excellent IR and Ambient Light Rejection Including
Sunlight (up to 50k lux) and CFL Interference
• Programmable LED Drive Current from 5 mA to
160 mA in 5 mA steps, No External Resistor Required
• Dynamic Dark Current Compensation
• Linear Response Over the Full Operating Range
• Senses Intensity of Ambient Light from 0.05 lux to 52k
lux with 21−bit Effective Resolution (16−bit converter)
• Continuously Programmable Integration Times
Ambient Light Sensing
• ALS Senses Ambient Light and Provides a 16−bit
Output Count on the I²C Bus Directly Proportional to
(6.25 ms, 12.5 ms, 25 ms… to 800 ms)
• Precision on−Chip Oscillator (counts equal 0.1 lux at
100 ms integration time)
the Ambient Light Intensity
© Semiconductor Components Industries, LLC, 2013
1
March, 2013 − Rev. 1
Publication Order Number:
NOA3302/D