Silicon Labs Si1153 Ambient Light Sensor IC
Silicon Labs Si1153 Ambient Light Sensor ICs are touchless sensor ICs that include dual 23-bit analog-to-digital converters. The Si1153 has an integrated high-sensitivity array of visible and infrared photodiodes, a digital signal processor, and three integrated LED drivers with programmable drive levels.
The Si1153 offers excellent performance under a wide dynamic range and various light sources, including direct sunlight. The ICs also work under dark glass covers. The photodiode response and associated digital conversion circuitry provide excellent immunity to artificial light flicker noise and natural light flutter noise. With two or more LEDs, the Si1153 is capable of supporting multiple-axis proximity motion detection.
The Silicon Labs Si1153 is provided in a 10-lead 2x2mm DFN package or a 10-lead 2.9x4.9mm module with an integrated LED. They are capable of operation from 1.62 to 3.6V over the -40 to +85°C temperature range.
Features
- Proximity detector
- Proximity detection is adjustable from under 1cm up to 200cm
- Up to three independent LED drivers
- 30 current settings from 5.6mA to 360mA for each LED driver
- Operates in direct sunlight with optional on-die 940nm passband filter
- On die 940 bandpass filter that rejects unwanted visible light and IR from daylight and other sources (Si1153-AA09)
- Heart rate and blood oxygen monitor
- Broad sensitivity from green to 940nm (Si1153-AA09)
- Three LED drivers ideal for wrist applications
- Ambient light sensor
- Up to 128klx dynamic range possible across two ADC range settings
- I2C Serial communications
- Up to 3.4Mbps data rate
- Slave mode hardware address decoding
- Industry's lowest power consumption
- 1.62 to 3.6V supply voltage
- 9µA average current (LED pulsed 25.6µs every 800ms at 180mA plus 3µA Si1153 supply)
- 25.6µs LED "on" time keeps total power consumption duty cycle low without compromising performance or noise community
- Internal and external wake support
- Built-in voltage supply monitor and power-on reset controller
- Trim-able internal oscillator with typical 1% accuracy
- Two package options
- 10-lead 2x2x0.65mm QFN
- 10-lead 2.9x4.9x1.2mm module with integrated 940nm LED
- Temperature Range
- -40 to +85°C
Applications
- Wearables
- Handsets
- Display backlighting central
- Consumer electronics
Related Products
Silicon Labs Si1151 & Si1152近接/周囲光センサ
低消費電力、長距離近接、環境光、ジェスチャ・センサで、I2Cデジタル・インターフェイスが搭載されています。
Function Block Diagram
公開: 2015-11-16
| 更新済み: 2025-09-11