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Ambient light sensor SENSORTEK STK31862 featuring photodiode timing controller and ADC on a single chip

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Ambient light sensor SENSORTEK STK31862 featuring photodiode timing controller and ADC on a single chip

Length : 2mm

Width : 1mm

Operating Temperature : -40℃~+85℃

Interface : I2C

Measurement Type : Light Intensity

Voltage - Supply : 1.7V~2V

Description : I2C 1.7V~2V OPLGA-6 Ambient Light, IR, UV Sensors RoHS

Mfr. Part # : STK31862

Model Number : STK31862

Package : OPLGA-6

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Product Overview

The STK31862 is an integrated ambient light sensor with an I2C interface, designed for robust backlight and display brightness control. It features a photodiode, timing controller, and ADC on a single chip, offering excellent spectral response close to human eye sensitivity and suppressing IR. The device supports a wide range of light intensities, provides excellent temperature compensation, on-chip refresh rate setting without external components, and a software shutdown mode for power saving. It operates within a voltage range of 1.7V to 2.0V.

Product Attributes

Brand: Sensortek Technology Corp.
Origin: Taiwan (implied by website domain)
Certifications: Hazardous Substance Free, RoHS / REACH Compliant
Package Options: OPLGA (2 x 1 x 0.5 mm)

Technical Specifications

Parameter	Value	Unit	Notes
Product Name	STK31862		Ambient Light Sensor with I2C interface
Supply Voltage (VDD)	1.7 - 2.0	V	Recommended Operating Conditions
I2C Clock Frequency	Up to 400	KHz	Fast Mode
Operation Temperature	-40 to 85	C
ALS Output Data Format	16-bit digital
Integration Time (Long)	8 steps	ms	3.125 to 400
Integration Time (Short)	20 steps	s	192 to 2112
Interrupt Settings	Out-of-window, Persistence		1/2/4/8 times
FIFO Buffer Size	1024	byte
ALS Supply Current	200 (Typ)	A	ALS only, GAIN_ALS_DX128=1, IT2_ALS=00101
Shutdown Current	3 (Typ)	A
Peak Sensitivity Wavelength (ALS)	550	nm
Full Scale ALS Counts	65535	counts
ALS Dark Offset	10	counts	Eambient = 0 Lux
ALS Sensing Tolerance	-12.5 to +12.5	%	White LED parallel light source
I2C Slave Address	0x45		7-bit addressing

2506271720_SENSORTEK-STK31862_C49230203.pdf

Ambient light sensor SENSORTEK STK31862 featuring photodiode timing controller and ADC on a single chip Images

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