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NOA3302 Schematic ( PDF Datasheet ) - ON Semiconductor

Teilenummer NOA3302
Beschreibung Digital Proximity Sensor
Hersteller ON Semiconductor
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Gesamt 23 Seiten
NOA3302 Datasheet, Funktion
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
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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.
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 Datasheet, Funktion
NOA3302
Figure 2. AC Characteristics, Standard and Fast Modes
Figure 3. AC Characteristics, High Speed Mode
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6

6 Page









NOA3302 pdf, datenblatt
NOA3302
NOA3302 Data Registers
NOA3302 operation is observed and controlled by internal data registers read from and written to via the external I2C
interface. Registers are listed in Table 6. Default values are set on initial power up or via a software reset command (register
0x01).
The I2C slave address of the NOA3302 is 0x37.
Table 6. NOA3302 DATA REGISTERS
Address
Type
Name
0x00
R
PART_ID
0x01
RW
RESET
0x02
RW
INT_CONFIG
0x0F RW PS_LED_CURRENT
0x10
RW
PS_TH_UP_MSB
0x11
RW
PS_TH_UP_LSB
0x12
RW
PS_TH_LO_MSB
0x13
RW
PS_TH_LO_LSB
0x14
RW PS_FILTER_CONFIG
0x15
RW
PS_CONFIG
0x16
RW
PS_INTERVAL
0x17
RW
PS_CONTROL
0x20
RW
ALS_TH_UP_MSB
0x21
RW
ALS_TH_UP_LSB
0x22
RW
ALS_TH_LO_MSB
0x23
RW
ALS_TH_LO_LSB
0x24
RW
RESERVED
0x25
RW
ALS_CONFIG
0x26
RW
ALS_INTERVAL
0x27
RW
ALS_CONTROL
0x40
R
INTERRUPT
0x41
R
PS_DATA_MSB
0x42
R
PS_DATA_LSB
0x43
R
ALS_DATA_MSB
0x44
R
ALS_DATA_LSB
Description
NOA3302 part number and revision IDs
Software reset control
Interrupt pin functional control settings
PS LED pulse current (5, 10, , 160 mA)
PS Interrupt upper threshold, most significant bits
PS Interrupt upper threshold, least significant bits
PS Interrupt lower threshold, most significant bits
PS Interrupt lower threshold, least significant bits
PS Filter configuration
PS Integration time configuration
PS Interval time configuration
PS Operation mode control
ALS Interrupt upper threshold, most significant bits
ALS Interrupt upper threshold, least significant bits
ALS Interrupt lower threshold, most significant bits
ALS Interrupt lower threshold, least significant bits
Reserved
ALS Integration time configuration
ALS Interval time configuration
ALS Operation mode control
Interrupt status
PS measurement data, most significant bits
PS measurement data, least significant bits
ALS measurement data, most significant bits
ALS measurement data, least significant bits
PART_ID Register (0x00)
The PART_ID register provides part and revision identification. These values are hardwired at the factory and can not be
modified.
Table 7. PART_ID REGISTER (0x00)
Bit 7 6 5 4 3 2 1 0
Field
Part number ID
Revision ID
Field
Part number ID
Revision ID
Bit Default
Description
7:4
1001
Part number identification
3:0 NA Silicon revision number
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