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NOA3302 반도체 회로 부품 판매점

Digital Proximity Sensor



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ON Semiconductor
NOA3302 데이터시트, 핀배열, 회로
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 trimode I2C
http://onsemi.com
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.
The proximity sensor measures reflected light intensity with a high
degree of precision and excellent ambient light rejection. The
CWDFN8
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
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_GND 3
LED 4
6 NC
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
Standby Current 5 mA (monitoring I2C interface only,
VDD = 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
(PbFree)
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
12bit Resolution and Four integration Time Ranges
(15bit effective resolution)
Effective for Measuring Distances up to 100 mm and
Photopic Spectral Response Nearly Matches Human Eye
Beyond
Dynamic Dark Current Compensation
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
Linear Response Over the Full Operating Range
Senses Intensity of Ambient Light from 0.05 lux to 52k
lux with 21bit Effective Resolution (16bit converter)
Continuously Programmable Integration Times
Ambient Light Sensing
ALS Senses Ambient Light and Provides a 16bit
Output Count on the I2C Bus Directly Proportional to
(6.25 ms, 12.5 ms, 25 msto 800 ms)
Precision onChip Oscillator (counts equal 0.1 lux at
100 ms integration time)
the Ambient Light Intensity
© Semiconductor Components Industries, LLC, 2013
March, 2013 Rev. 1
1
Publication Order Number:
NOA3302/D


NOA3302 데이터시트, 핀배열, 회로
NOA3302
Additional Features
Programmable interrupt function including independent
upper and lower threshold detection or threshold based
hysteresis for proximity and or ALS
Proximity persistence feature reduces interrupts by
providing hysteresis to filter fast transients such as
camera flash
Automatic power down after single measurement or
continuous measurements with programmable interval
time for both ALS and PS function
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
VDD
Fast mode – 400 kHz
High speed mode – 3.4 MHz
No external components required except the IR LED
and power supply Decoupling Caps
8lead CUDFN 2.0 x 2.0 x 0.6 mm clear package
These Devices are PbFree, Halogen Free/BFR Free
and are RoHS Compliant
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
VDD_I2C
NOA3302
hn
ALS
Photodiode
ADC
Reference
Diode
1 mF
DSP
I2C Interface
Osc &
Control
INTB
SCL
SDA
VDD
MCU
INTB
SCL
SDA
22 mF
1 mF
ADC
hn
Proximity
Photodiode
DSP
LED
Drive
IR LED
LED
VSS
LED_GND
Figure 1. NOA3302 Application Block Diagram
Table 1. PIN FUNCTION DESCRIPTION
Pin Pin Name
Description
1
VDD
Power pin.
2
VSS
Ground pin.
3
LED_GND
Ground pin for IR LED driver.
4 LED IR LED output pin.
5 INT Interrupt output pin, opendrain.
6 NC Not connected.
7
SDA
Bidirectional data signal for communications with the I2C master.
8
SCL
External I2C clock supplied by the I2C master.
http://onsemi.com
2




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NOA3302 sensor

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