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Integrated I2C Digital Ambient Light Sensor and Proximity Sensor - LTR-507ALS-01

? I2C interface
? Built-in temperature compensation circuit
? Programmable independent thresholds and interrupts
? Low active power consumption with shutdown mode
? Supply voltage range from 2.4V to 3.6V capable of 1.7 V logic voltage
? Operating temperaturerange from -40°C to +85°C
? RoHS and Halogen free compliant

Model Number: LTR-507ALS-01
Data Sheet:

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Product Specification

LTR-507ALS-01 Ambient Light Sensor and Proximity Sensor Description
The LTR-507ALS-01 is an integrated I2C digital light sensor [ALS] and proximity sensor [PS] with built-in LED driver, in a miniature chipled lead-free surface mount package. This device converts light intensity to a digital output signal capable of direct I2C interface. It provides a linear response over a wide dynamic range and is well suited to applications under high ambient brightness. With built-in proximity sensor, LTR-507ALS-01 offers the feature to detect object at a user configurable distance of typical 50cm Gray Card.

The device supports an interrupt feature that removes the need to poll the sensor for a reading which improves system efficiency. The device also supports several features that help to minimize the occurrence of false triggering. This CMOS design and factory-set one time trimming capability ensure minimal device-to-device variations for ease of manufacturability to the end customers.

LTR-507ALS-01 Ambient Light Sensor and Proximity Sensor Features
? I2C interface (Standard mode@100kbit/s, Fast Mode@400kbit/s and High Speed Mode@3.4Mbit/s)
? Built-in temperature compensation circuit
? Programmable independent thresholds and interrupts
? Low active power consumption with shutdown mode
? Supply voltage range from 2.4V to 3.6V capable of 1.7 V logic voltage
? Operating temperaturerange from -40°C to +85°C
? RoHS and Halogen free compliant
? Light Sensor Features
- Close to human eye spectral response
- 4 Gain Range Selections
- Works under different light source conditions
- Automatically rejects 50/60Hz lightings flicker
? Proximity Sensor Features
- Built-in LED driver and detector
- Programmable LED drive settings
- 11-bit effective resolution
- High ambient light suppression

LTR-507ALS-01 Ambient Light Sensor and Proximity Sensor Application
To control display backlight and/or object detection in
? Mobile Devices: Mobile phone, PDA
? Computing Devices: Notebook PC, Desktop Monitor
? Consumer Devices: LCD/PDP TV backlight systems, Cameras, Personal Navigation Device, Digital Photo Frame
? Dashboard

LTR-507ALS-01 Ambient Light Sensor and Proximity Sensor Rating and Specification
Absolute Maximum Rating at Ta=25°C

Parameter	Symbol	Rating	Unit
Supply Voltage	VDD	4.5	V
I2C Address Pin Voltage	SEL	-0.2 to 4.5	V
I2C Bus Pin Voltage	SCL, SDA	-0.2 to 4.5	V
I2C Bus Pin Current	SCL, SDA	10	mA
Storage Temperature	T_stg	-40 to 100	°C

Note: Exceeding these ratings could cause damage to the sensor. All voltages are with respect to ground. Currents are positive into, negative out of the specified terminal.

Recommended Operating Conditions

Description	Symbol	Min.	Typ.	Max.	Unit
Supply Voltage	VDD	2.4		3.6	V
LED Supply Voltage	V_LED	2.5		4.35	V
I2C Bus Pin Voltage	V_bus	1.7		3.6	V
I2C Bus Input Pin High Voltage	VIH_SCL, VIH _SDA	1.3			V
I2C Bus Input Pin Low Voltage	VIL_SCL, VIL_SDA			0.3	V
Operating Temperature	T_ope	-40		85	°C

Electrical & Optical Specifications
All specifications are at VDD = 3.0V, Tope = 25°C, unless otherwise noted.

Parameter	Min.	Typ.	Max.	Unit	Condition
Active Supply Current			220	uA	Active Mode, Tope = 25°C
Standby Current			5	uA	Standby / Sleep Mode
Initial Startup Time	100			ms	(Note 1)
Wakeup Time from Standb			10	ms	(Note 1)

Characteristics Ambient Sensor

Parameter	Min.	Typ.	Max.	Unit	Condition
Full Scale ADC Count	0		65535	count
Dark ADC Count	0		3	count	E = 0 lux, Dynamic range 1
CH1 Count	90		180	count	E=200 lux white LED (10K color temperature), Dynamic range 1, 1 to 64kux, 16 bit A DC
CH2 Count	25		55	count	E=200 lux white LED (10K color temperature), Dynamic range 1, 1 to 64kux, 16 bit ADC
Gain 2x	-5%		5%		Dynamic range 1
Gain 100x	-5%		5%		Dynamic range 1
Gain 200x	-5%		5%		Dynamic range 1

Characteristics Proximity Sensor

Parameter	Min.	Typ.	Max.	Unit	Condition
Full Scale ADC Count			2047	count
Peak Sensitivity		850		nm
Detection Distance		50		cm	18% Gray card IR LED=LTE-C249, 127 IR pulses
Ambient Light Suppression			50k	lux	Direct sunlight
LED Pulse Count	1		255	pulses
LED Pulse Frequency	30k		100k	Hz	Increment of 10k Hz
LED Duty Cycle		50%		%	Fixed at 50% Duty Cycle
LED Peak Current		5		mA	LED Peak Current = 000
		10		mA	LED Peak Current = 001
		20		mA	LED Peak Current = 010
		50		mA	LED Peak Current = 011
	65		130	mA	LED Peak Current = 100/101/110/111