SI1120 Overview
The Si1120 is a low-power, reflectance-based proximity and ambient light sensor with advanced analog signal processing and analog PWM output. It includes an integrated differential photodiode, signal processor, and LED driver. Proximity sensing is based on the measurement of reflected light from an external, optically-isolated, strobed LED.
SI1120 Key Features
- Typically 50 cm meter proximity
- High EMI immunity without
- Seven precision optical
- Power supply: 2.2-3.7 V
- Operating temperature range
- 3 proximity ranges
- 40 to +85 °C
- 3 dc ambient ranges
- Typical 10 µA current
- 1 calibration mode