cm3220 is an advanced ambient light sensor that uses the analog cmos process and offers a convenient controlling method by digital pwm output. the duty cycle ofthedigital pwm output can be gradually modulated by the ambient light intensity; the modulated pwm signal simulates real human eye performance for the backlight system. it does not need loadingofsoftware development for backlight dimming control.
  it incorporates a photodiode, amplifiers and analog circuits into a single chip. the best spectral sensitivity is used to closely capture real humaneyeresponses. cm3220 has an excellent temperature compensation capability and the robust refresh rate setting does not need an external rc low pass filter. shutdown mode is provided, which reducespowerconsumption to be less than 20 μa. cm3220’s operating voltage ranges from 2.5 v to 5.5 v and can detect low light power. the maximum detection light strength is 4 klux.
device name: cm3220 ambient light sensor with digital pwm output
package：6 pin oplga, 2.35 x 1.8 x 1.0 mm power supply(v)：2.5v to 5.5v als intensity(lux)：0.625 to 1000 lux
联系人：何小姐   联系方式：18813576091   qq:2658721671

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深圳市政鸿微电子有限公司
何建花
18194085326
布龙路339号鸿生源科技园