SI1133 Datasheet, PDF (1/43 Pages) Silicon Laboratories – UV Index/Ambient Light Sensor IC with IC Interface

Si1133 Data Sheet
UV Index/Ambient Light Sensor IC with I²C Interface
The Si1133 is a UV Index Sensor and Ambient Light Sensor with I²C digital interface and
programmable-event interrupt output. This sensor IC includes dual 23-bit analog-to-digi-
tal converters, integrated high-sensitivity array of UV, visible and infrared photodiodes,
and digital signal processor. The Si1133 is provided in a 10-lead 2x2 mm DFN package
and capable of operation from 1.62 to 3.6 V over the –40 to +85 °C temperature range.
Applications
• Wearables
• Handsets
• Display backlighting control
• Consumer electronics
KEY FEATURES
• High accuracy UV index sensor (0 to > 20
uV)
• Matches erythermal curve
• Ambient light sensor
• <100 mlx resolution possible, allowing
operation under dark glass
• Up to 128 klx dynamic range possible
across two ADC range settings
• Industry’s lowest power consumption
• 1.62 to 3.6 V supply voltage
• <500 nA standby current
• Internal and external wake support
• Built-in voltage supply monitor and
power-on reset controller
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Rev. 0.91