NOA3315W Datasheet, PDF (1/26 Pages) ON Semiconductor – Digital Proximity Sensor

NOA3315W
Digital Proximity Sensor
with Dual Ambient Light
Sensors and Interrupt
Description
The NOA3315W 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
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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
NOA3315W 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
AMBIENT LIGHT PROXIMITY SENSOR
compensation and high sensitivity eliminating inaccurate light level
detection and insuring proper backlight control even in the presence of
dark cover glass.
ORDERING INFORMATION
The NOA3315W 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
Device
NOA3315W
Wafer Size
200 mm wafer
Temp Range
−40°C to 80°C
lighting conditions to control display backlight intensity.
Features
Ambient Light Sensing
• Proximity Sensor, LED Driver and Dual ALS in One
• Dual ALS senses ambient light and provides 16−bit
Device
output counts on the I²C bus directly proportional to the
• Very Low Power Consumption
♦ Stand−by current 2.8 mA (monitoring I²C interface
ambient light intensity
• Photopic Spectral Response of ALS1 Nearly Matches
only, Vdd = 3 V)
Human Eye
♦ ALS operational current 50 mA per sensor
• Broadband response of ALS2 supports compensation
♦ Proximity sensing average operational current
100 mA
♦ Average LED sink current 75 mA
• These Devices are Pb−Free, Halogen Free/BFR Free
and are RoHS Compliant
for spectral shifts encountered with different types of
cover glass
• Dynamic Dark Current Compensation
• Linear Response over the Full Operating Range
• 3 ranges – 100 counts/lux, 10 counts/lux, 1 count/lux
Proximity Sensing
• Senses Intensity of Ambient Light from 0.02 lux to 52k
• Proximity detection distance threshold I²C
programmable with 12−bit resolution and eight
lux with 21−bit Effective Resolution (16−bit converter)
• Programmable Integration Times (50 ms, 100 ms,
integration time ranges (16−bit effective resolution)
200 ms, 400 ms)
• Effective for Measuring Distances up to 200 mm and
Beyond
• Excellent IR and Ambient Light Rejection including
Sunlight (up to 50K lux) and CFL Interference
• Programmable LED Drive Current from 10 mA to
160 mA in 5 mA Steps, no External Resistor Required
• User Programmable LED Pulse Frequency
Additional Features
• Programmable interrupt function including independent
upper and lower threshold detection or threshold based
hysteresis for proximity and or ALS
• Level or Edge Triggered Interrupts
• Proximity persistence feature reduces interrupts by
providing hysteresis to filter fast transients such as
camera flash
© Semiconductor Components Industries, LLC, 2015
1
March, 2015 − Rev. 0
Publication Order Number:
NOA3315W/D