Products
(End-of-life) CM3218 High Sensitivity I2C Ambient Light Sensor
CM3218 is an advanced ambient light sensor with I2C protocol interface and designed by the CMOS process. It is easily operated via a simple I2C command. The active interruption feature within the threshold windows setting offers the benefit of eliminating loading of the controller monitor.
CM3218 incorporates a photodiode, amplifiers and analog circuits into a single chip. The best spectral sensitivity is used to closely capture real human eye responses. CM3218 has excellent temperature compensation. Its robust refresh rate setting does not need an external RC low pass filter. Software shutdown mode is provided which reduces power consumption to be less than 1μA. CM3218's operating voltage ranges from 2.7V to 5V and can detect a wide range of ambient light power. The maximum detective light strength is over 140K Lux.
* Filtron™ technology adoption :
excellent responsivity : close to real human eye responses
* High sensitivity:
minimum detectable intensity 0.00089 Lux/Bit supports low transmittance(dark) lens design
* O-Trim™ technology adoption :
ALS output tolerance: ± 10%
* Excellent temperature compensation: -40 to 85°C
* High dynamic detection resolution
* Standard I2C protocol interface
* Interruption feature (INT) support
Programmable interrupt function with upper and lower thresholds.
Adjustable persistence to prevent false triggers.
* Fluorescent light flicker immunity
* Auto memorization of the last light data before shutdown
* Software shutdown mode control
* Operation voltage from 2.7V to 5V
* Ambient light strength detection range over 140K Lux
* Package:
OPLGA (2.35 x 1.8 x 1.0 mm)
* Lead-free package (RoHS compliant)
