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Si114x QuickSense™ Infrared Proximity SensorsSilicon Labs Si114x QuickSense™ infrared proximity sensors are the industry's most sensitive and lowest power active infrared proximity sensors. Silicon Labs Si114x infrared proximity sensors feature an all-digital I²C control interface and up to three infrared LED drivers in an impressively small 2mm x 2mm clear QFN package. These Silicon Labs sensors are capable of controlling 1-, 2-, and 3-infrared LED systems, giving developers the freedom to implement one-dimensional systems with a range of up to 50cm or multi-dimensional systems capable of advanced motion sensing with a range of up to 15cm. Silicon Labs Si114x infrared proximity sensors extend battery life by reducing the Ir-LED on-time to only 25.6 µs. These QuickSense devices also feature an integrated ambient light photodiode that enables accurate light level monitoring in mixed-light source settings.
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Benefits
- Industry leading infrared proximity sensing range of 50 cm
- Extends battery life by reducing the Ir-LED on-time to only 25.6 μs
- Enables 1, 2, and 3-dimensional sensing systems
- Enables innovative new end-product features like the touchless slider
- Dynamic adjustment of LED currents minimizes power consumption
- Enables accurate light level monitoring in mixed-light source settings
- Improved user visual experience and reduced backlight energy usage
- Autonomous operation allows system wake-on-approach
- Flexible access to sensing configuration
Features
- High sensitivity infrared photodiode
- 1-, 2-, or 3- independently controlled infrared LED drivers
- Integrated ambient light photodiode
- I²C control interface with interrupt
- 2x2mm QFN-10 package
Applications
- Handsets
- E-Readers
- Netbooks
- Web tablets
- Portable consumer electronics
- Office equipment
- Toys
- Industrial equipment
- Security equipment
- Smoke detectors
- Point of sale stations
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Product Specifications
Part Number
| Infrared Range
| LED Drivers
| Si1141
| >50 cm
| 1
| Si1142
| Up to 15 cm for gestures
| 2
| Si1143
| Up to 15 cm for gestures
| 3
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Block Diagram
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Si114x Video: 3 LED Proximity and Ambient Light Sensor Solutions
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Silicon Labs QuickSense™ Si1140DK Development Kit
The Silicon Labs Si1140DK Development Kit is an advanced development platform for the Si114x infrared proximity and ambient light sensor. The hardware is controlled by the advanced ultra-low power C8051F800 MCU. The MCU controls a three Ir-LED configuration in combination with the Si1143 sensor. The three Ir-LED configuration allows for advanced 3-axis touchless object proximity and motion sensing. Development of advanced motion and gesture sensing is assisted with the QuickSense Studio development environment. Within the Studio environment is a powerful performance analysis tool that enables real-time reflectivity monitoring.
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Silicon Labs IrSlider2EK Touchless Slider Evaluation Kit
The IrSlider2EK QuickSense Si114x Touchless Slider Evaluation Kit is a Silicon Labs infrared touchless slider kit that boasts excellent range, visible LED tracking, and both swipe and set gesture recognition. The USB powered demonstration is controlled by an ultra-low power Silicon Labs C8051F800 MCU and incorporates an Si1142, two infrared LEDs, and eight visible LEDs. The QuickSense Studio development environment supports this unique demonstration board with a powerful performance analysis tool that enables real-time reflectivity monitoring.
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