Broadcom APDS-9309 Miniature Ambient Light Photo Sensor
Broadcom APDS-9309 is a low-voltage digital ambient light photosensor that converts light intensity to digital signal output capable of a direct I2C-bus interface. Each device contains one broadband photodiode (visible plus infrared) and one infrared photodiode. Two integrating ADCs convert the photodiode currents to a digital output. This represents the irradiance measured on each channel. This digital output can be fed to a microprocessor where illuminance (ambient light level) in lux is derived using an empirical formula to approximate the human-eye response.
Features
- Approximate the human-eye response
- Precise Illuminance measurement under diverse lighting conditions
- Programmable Interrupt Function with User-Defined Upper and Lower Threshold Settings
- 16-Bit Digital Output with I2C Fast-mode at 400kHz
- Programmable Analog Gain and Integration Time
- RoHS Compliant
- Miniature ChipLED Package
- Height – 0.65 mm
- Length – 2.00 mm
- Width – 2.00 mm
- 50/60Hz Lighting Ripple Rejection
- Low 2.5V Input Voltage and 1.8V Digital Output
- Low Active Power (0.6mW Typical) with Power Down Mode
Applications
- Detection of ambient light to control display backlighting
- Mobile devices – Cell phones, PDAs, PMP
- Computing devices – Notebooks, Tablet PC, Keyboard
- Consumer devices – LCD Monitor, Flat-panel TVs, Video Cameras, Digital Still Camera
- Automatic Residential and Commercial Lighting Management
- Automotive instrumentation clusters.
- Electronic Signs and Signals
Published: 2015-02-10
| Updated: 2022-03-11