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Low Voltage I2C Digital Ambient Light Sensor - LTR-303ALS-01

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• I2C interface (Fast Mode @ 400kbit/s)
• Ultra small 6 pin ChipLED package
• 2.0mm(L), 2.0mm(B), 0.7mm(H)
• Built-in temperature compensation circuit
• Low active power consumption with standby mode
• Supply voltage range from 2.4V to 3.6V capable of 1.7V logic voltage
• Operating temperature range from -30°C - 70°C

Model Number: LTR-303ALS-01
Data Sheet:

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Product Specification

LTR-303ALS-01 Ambient Light Sensor Description
The LTR-303ALS-01 is a low voltage I2C digital light sensor [ALS] in a low cost miniature chipled lead-free surface mount package. This sensor converts light intensity to a digital output signal capable of direct I2C interface. It provides a linear response over a wide dynamic range from 0.01 lux to 64k lux and is well suited to applications under high ambient brightness.

LTR-303ALS-01 Ambient Light Sensor Features
• I2C interface (Fast Mode @ 400kbit/s)
• Ultra small 6 pin ChipLED package
• 2.0mm(L), 2.0mm(B), 0.7mm(H)
• Built-in temperature compensation circuit
• Low active power consumption with standby mode
• Supply voltage range from 2.4V to 3.6V capable of 1.7V logic voltage
• Operating temperature range from -30°C - 70°C
• RoHS and Halogen free compliant
• Close to human eye spectral response
• Immunity to IR / UV Light Source
• Automatically rejects 50 / 60 Hz lightings flicker
• Full dynamic range from 0.01 lux to 64k lux
• 16-bit effective resolution

LTR-303ALS-01 Ambient Light Sensor Applications
• Back-lighting Control in mobile/portable devices
• Touch Panel Control in mobile/portable devices

LTR-303ALS-01 Ambient Light Sensor Ratings and Specifications
Absolute Maximum Ratings at Ta = 25°C

Parameter	Symbol	Rating	Unit
Supply Voltage	VDD	3.8	V
Digital Voltage Range	SCL, SDA, INT	-0.5 to 3.8	V
Digital Output Current	SCL, SDA, INT	-1 to 20	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
Interface Bus Power Supply Voltage	VIO	1.7		3.6	V
I2C Bus Input Pin High Voltage	V_IH SCL, V_IHSDA	1.2			V
I2C Bus Input Pin Low Voltage	V_ILSCL, V_IL SDA			0.6	V
Operating Temperature	T_ope	-30		70	°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, T_ope= 25°C, VDD=3.6V Integration Time:100ms Measurement rate:200ms
Standby Current			5	uA	Standby / Sleep Mode
Initial Startup Time	100			ms	(Note 1)
Wakeup Time from Standby			10	ms	(Note 1)

Light Sensor

Parameter	Min.	Typ.	Max.	Unit	Condition
Full Scale ADC Count			65535	count
Dark ADC Count	0		6	count	Ch0, Lux = 0
Dark ADC Count	0		6	count	Ch1, Lux = 0
ADC Count (Gain=96) @200Lux	3250		6100	count	Ch1 (see note 2) White LED 200 Lux Integration Time : 50ms Measurement Time : 100ms
	1050		1950	count	Ch1 (see note 2) White LED 200 Lux Integration Time : 50ms Measurement Time : 100ms
	0.15		0.35	Ratio	Ch1/(Ch0 + Ch1)