NOA3315 Proximity Sensor Datasheet

NOA3315 Datasheet, PDF, Equivalent


Part Number

NOA3315

Description

Digital Proximity Sensor

Manufacture

ON Semiconductor

Total Page 26 Pages
Datasheet
Download NOA3315 Datasheet


NOA3315
NOA3315
Digital Proximity Sensor
with Dual Ambient Light
Sensors and Interrupt
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.
www.onsemi.com
CUDFN8
CU SUFFIX
1 CASE 505AP
PIN CONNECTIONS
VDD 1
8 SCL
VSS 2
7 SDA
LED_GND 3
6 NC
LED 4
5 INT
(Top View)
ORDERING INFORMATION
Device
Package
Shipping
NOA3315CUTAG* CUDFN8
(Pb−Free)
2500 /
Tape & Reel
*Temperature Range: −40°C to 80°C.
Features
Proximity Sensor, LED Driver and Dual ALS in One
Device
Very Low Power Consumption
Stand−by current 2.8 mA (monitoring I2C interface
only, Vdd = 3 V)
ALS operational current 50 mA per sensor
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
Proximity Sensing
Proximity detection distance threshold I2C
programmable with 12−bit resolution and eight
integration time ranges (16−bit effective resolution)
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
Ambient Light Sensing
Dual ALS senses ambient light and provides 16−bit
output counts on the I2C bus directly proportional to the
ambient light intensity
Photopic Spectral Response of ALS1 Nearly Matches
Human Eye
Broadband response of ALS2 supports compensation
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
Senses Intensity of Ambient Light from 0.02 lux to 52k
lux with 21−bit Effective Resolution (16−bit converter)
Programmable Integration Times (50 ms, 100 ms,
200 ms, 400 ms)
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, 2016
December, 2016 − Rev. 0
1
Publication Order Number:
NOA3315/D

NOA3315
NOA3315
Automatic power down after single measurement or
continuous measurements with programmable interval
time for both ALS and PS functions
Wide Operating Voltage Range (2.3 V to 3.6 V)
Wide Operating Temperature Range (−40°C to 80°C)
I2C Serial Communication Port
Standard mode – 100 kHz
Fast mode – 400 kHz
High speed mode – 3.4 MHz
No External Components Required except the IR LED
and Power Supply Decoupling Caps
Applications
Senses human presence in terms of distance and senses
ambient light conditions, saving display power in
applications such as:
Smart phones, mobile internet devices, MP3 players,
GPS
Mobile device displays and backlit keypads
Figure 1. NOA3315 Application Block Diagram
Table 1. PAD FUNCTION DESCRIPTION
Pad Pad Name
Description
1
VDD
Power pad
2
VSS
Ground pad
3
LED_GND
Ground pad for IR LED driver
4 LED IR LED output pad
5 INT Interrupt output pad, open−drain
6
SDA
Bi−directional data signal for communications with the I2C master
7 SCL External I2C clock supplied by the I2C master
www.onsemi.com
2


Features NOA3315 Digital Proximity Sensor with D ual Ambient Light Sensors and Interrupt Description The NOA3315 combines an a dvanced digital proximity sensor and LE D driver with dual ambient light sensor s (ALS) and tri−mode I2C interface wi th interrupt capability in an integrate d monolithic device. Multiple power man agement features and very low active se nsing power consumption directly addres s the power requirements of battery ope rated mobile phones and mobile internet devices. The proximity sensor measures reflected light intensity with a high degree of precision and excellent ambie nt light rejection. The NOA3315 enables a proximity sensor system with a 16:1 programmable LED drive current range an d a 30 dB overall proximity detection r ange. The dual ambient light sensors in clude one with a photopic light filter and one with no filter. Both have dark current compensation and high sensitivi ty eliminating inaccurate light level d etection and insuring proper backlight control even in the presen.
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