Silicon LabsProximity and Ambient Light SensorSi1120
Description
Features
PWM output
Ambient light sensor
Seven precision optical measurement modes:
3 proximity ranges
3 dc ambient light sensing ranges
1 calibration mode
Low-noise ambient cancelling circuit allows maximum sensitivity with 8–12 bit resolution
Works in direct sunlight (100 klux)
Minimum reflectance sensitivity <1 μW/cm2
High EMI immunity without shielded packaging
Power supply: 2.2–3.7 V
Operating temperature range: –40 to +85 °C
Typical 10 μA current consumption
Programmable 400/50 mA LED constant current driver output
Allows independent LED supply voltage
Silicon Labs
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Datasheet
Description
Features
PWM output
Ambient light sensor
Seven precision optical measurement modes:
3 proximity ranges
3 dc ambient light sensing ranges
1 calibration mode
Low-noise ambient cancelling circuit allows maximum sensitivity with 8–12 bit resolution
Works in direct sunlight (100 klux)
Minimum reflectance sensitivity <1 μW/cm2
High EMI immunity without shielded packaging
Power supply: 2.2–3.7 V
Operating temperature range: –40 to +85 °C
Typical 10 μA current consumption
Programmable 400/50 mA LED constant current driver output
Allows independent LED supply voltage
Features
PWM output
Ambient light sensor
Seven precision optical measurement modes:
3 proximity ranges
3 dc ambient light sensing ranges
1 calibration mode
Low-noise ambient cancelling circuit allows maximum sensitivity with 8–12 bit resolution
Works in direct sunlight (100 klux)
Minimum reflectance sensitivity <1 μW/cm2
High EMI immunity without shielded packaging
Power supply: 2.2–3.7 V
Operating temperature range: –40 to +85 °C
Typical 10 μA current consumption
Programmable 400/50 mA LED constant current driver output
Allows independent LED supply voltage
Features
PWM output
Ambient light sensor
Seven precision optical measurement modes:
3 proximity ranges
3 dc ambient light sensing ranges
1 calibration mode
Low-noise ambient cancelling circuit allows maximum sensitivity with 8–12 bit resolution
Works in direct sunlight (100 klux)
Minimum reflectance sensitivity <1 μW/cm2
High EMI immunity without shielded packaging
Power supply: 2.2–3.7 V
Operating temperature range: –40 to +85 °C
Typical 10 μA current consumption
Programmable 400/50 mA LED constant current driver output
