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In 1800 Count Alassandro Volta made the "voltaic pile", a battery. His experiments,along with Luigi Galvani, applying electricity to frogs legs and making them jump when touched by an electric wire prompted Mary Wollstonecraft Shelley to write FRANKENSTEIN in 1818.
 

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Maxim Integrated-MAX44009-Ambient-Light-Sensor-with-ADCThe Maxim Integrated MAX44009 is the industry's lowest power ambient light sensor with analog to digital converter (ADC). The Maxim Integrated MAX44009 ambient light sensor features an operating current of less than 1µA and an ultra-wide 22-bit dynamic range of 0.045 lux to 188,000 lux.

Low-light operation allows easy operation in dark-glass applications. The on-chip photodiode's spectral response is optimized to mimic the human eye's perception of ambient light and incorporates IR and UV blocking capability. The adaptive gain block automatically selects the correct lux range to optimize the counts/lux. The Maxim Integrated MAX44009 ambient light sensor is designed to operate from a 1.7V to 3.6V supply voltage range and consumes only 0.65μA in full operation. The MAX44009 is designed for use in a variety of applications, including tablet PCs/notebook computers, TVs/projectors/displays, digital lighting management, portable devices, and more. The MAX44009EVKIT evaluation kit is a fully assembled and tested surface-mount PCB that evaluates the MAX44009.

Features:
    Wide 0.045 Lux to 188,000 Lux Range
    Small, 2mm x 2mm x 0.6mm UTDFN-Opto Package
    VCC = 1.7V to 3.6V
    ICC = 0.65μA Operating Current
    -40ºC to +85ºC Temperature Range
    Device Address Options
        1001 010x and 1001 011x
Applications:
    Tablet PCs/Notebook Computers
    TVs/Projectors/Displays
    Digital Lighting Management
    Portable Devices
    Cellular Phones/Smartphones
    Security Systems

Block Diagram

max44009block

Additional Resources
    MAX44009 Datasheet