Si114x Optical Sensor Common Specs
- Ultra-sensitive photodiodes with up to 3 independent LED drivers enable multiple functions
- Heart rate and blood oximetry measurements
- Over 50 cm proximity detection
- Advanced 2D and 3D gesture detection
- Cheek detection for handsets
- Ambient light sensor
- Enables accurate light level monitoring under mixed lighting
- Automatic backlight control for improved end user visual experience and reduced backlight energy
- Optional digital UV Index sensor
- Determine real-time UV sun exposure and cumulative UV sun exposure
- Low-power sensors, signal processor, and ADC enable long battery life
- As little as 1.2 µA average current with once per second UV Index measurements
- Innovative single-pulse proximity sensor minimizes on-time of IrLED to 25.6 µs – the primary energy consumer
- 9 µA average proximity sensing current (LED pulsed 25.6 µs every 800 ms at 180 mA plus 3 µA Si114x supply)
- Dynamic adjustment of LED currents minimizes power consumption and optimizes performance
- 1.7 to 3.6 V supply voltage
- < 500 nA standby current
- I²C interface for ease of communication with host MCU
- 0.1 to 128 kLux dynamic range enables operation in direct sunlight
- Minimum reflectance sensitivity of <1 uW/cm2
- Tiny 2x2 mm clear QFN package
- Operating temperature: – 40 to 85 °C
Find the Right Si114x Device
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Part Number | Description | UV Index | LEDs | Proximity | Ambient Light Sensor | Interface | Package Type | Package Size (mm) |
---|---|---|---|---|---|---|---|---|
Proximity + Ambient Light Sensor | 1 | Motion Sensing | I2C | QFN10 | 2x2 | |||
Proximity + Ambient Light Sensor | 3 | 3D Gesture Sensing | I2C | QFN10 | 2x2 |
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Si1140 Optical Sensor Development Kit
The Si1140DK is an advanced development platform for the Si114x infrared proximity and ambient light sensors. Controlled by an advanced C8051F800 ultra low-power microcontroller (MCU) , the Si1140DK contains an Si1143 sensor connected to three IR-LEDs.
Si1140 Optical Sensor Development Kit
The Si1140DK is an advanced development platform for the Si114x infrared proximity and ambient light sensors. Controlled by an advanced C8051F800 ultra low-power microcontroller (MCU) , the Si1140DK contains an Si1143 sensor connected to three IR-LEDs.