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Ambient light sensor LITEON LTR-308ALS-01 with programmable interrupt hysteresis and CMOS technology

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Ambient light sensor LITEON LTR-308ALS-01 with programmable interrupt hysteresis and CMOS technology

Operating Temperature : -40℃~+85℃

Interface : I2C

Measurement Type : Light Intensity

Voltage - Supply : 1.7V~3.6V

Photoperceptivity : 157klx

Description : I2C 1.7V~3.6V SMD Ambient Light, IR, UV Sensors RoHS

Mfr. Part # : LTR-308ALS-01

Model Number : LTR-308ALS-01

Package : SMD

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Product Overview

The LTR-308ALS-01 is an integrated, low-voltage I2C ambient light sensor (ALS) housed in a miniature 2x2mm chipled surface mount package. It offers a linear response across a wide dynamic range, suitable for both low and bright ambient light conditions. The sensor features a programmable interrupt with hysteresis, eliminating the need for constant polling and improving system efficiency. Its CMOS design and factory-set trimming ensure minimal variations between sensors, simplifying manufacturing. This sensor is designed to control display panel brightness in mobile, computing, and consumer devices.

Product Attributes

Brand: LITE-ON
Origin: Taiwan, R.O.C.
Certifications: RoHS and Halogen free compliant

Technical Specifications

Parameter	Symbol	Min.	Typ.	Max.	Unit	Condition
Supply Voltage	VDD	1.7		3.6	V
Interface signal input high	VI2Chigh	1.5		VDD	V
Interface signal input low	VI2Clow	0		0.4	V
Operating Temperature	Tope	-40		85	C
Active Supply Current			110		uA	Max. duty cycle, Vdd=1.8V, Gain 3x
Standby Current			1		uA
Shutdown Mode Wakeup Time from Standby	t	5	10		ms	From Standby to Active mode
ALS Resolution		16	20	Bit	Programmable for 16, 17, 18, 19, 20 Bit
ALS Lux accuracy		-10		10	%	White LED, 5000K, Ta = 25
Dark Level Count		0	5	Count	0 Lux, 18-bit resolution
Integration time		50	400	ms	With 50/60Hz Rejection
50/60 Hz flicker noise error		-5		+5	%
SCL clock frequency	SCL f	1		400	kHz
Bus free time between a STOP and START condition	t BUF		1.3		us
Hold time (repeated) START condition. After this period, the first clock pulse is generated	t STA HD	0.6			us
LOW period of the SCL clock	t LOW	1.3			us
HIGH period of the SCL clock	t HIGH		0.6		us
Set-up time for a repeated START condition	t STA SU		0.6		us
Set-up time for STOP condition	t STO SU		0.6		us
Rise time of both SDA and SCL signals	rt	30		300	ns
Fall time of both SDA and SCL signals	ft	30		300	ns
Data hold time	t DAT HD	0.3		0.9	us
Data setup time	t DAT SU		100		ns
Pulse width of spikes which must be suppressed by the input filter	t SP	0		50	ns
I2C Slave Address (Default)		0x53

2410121549_LITEON-LTR-308ALS-01_C492382.pdf

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