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Specifications
Length:
2mm
Width:
1mm
Operating Temperature:
-40℃~+85℃
Interface:
I2C
Measurement Type:
Light Intensity
Voltage - Supply:
1.7V~2V
Mfr. Part #:
STK31862
Package:
OPLGA-6
Key Attributes
Model Number:
STK31862
Product Description
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
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