UV Index/Ambient Light Sensor IC - Silicon Laboratories
Description
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-digital 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
silabs.
com | Smart.
Connected.
Energy-friendly.
Rev.
0.
91
1.
Feature List
• High accuracy UV index sensor • Matches erythermal curve
• Ambient light sensor • <100 mlx resolution possible, allowing operation under dark glass<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
Si1133 Data Sheet
Feature List
• Trimmable internal oscillator with typical 1% accuracy • I2C Serial communications
• Up to 3.
4 Mbps data rate • Slave mode hardware address decoding • Small package options • 10-lead 2 x 2 x 0.
65 mm QFN • Temperature Range: –40 to +85 °C
silabs.
com | Smart.
Connected.
Energy-friendly.
Rev.
0.
91 | 1
2.
2 x 2 mm DFN Ordering Guide
Family
DFN OPNs
Si113x
Si1133...
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