LX1972

LX1972 Ambient Light

 

Functional Description

Driver Properties

Driver Specifications

Interface Schematic

 

Functional Description

This is an ambient light detector, using the LX1972, a low cost silicon light sensor with spectral response that closely emulates the human eye. The light input is converted to a 0-100%.

 

Hardware Interface: A PSoC input pin is connected to a high impedance analog input connection to the Analog to Digital Converter (ADC).

 

Software Interface: The ambient light detector status is presented as an 8-bit unsigned char with a value of 0 to 100%.

 

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Driver Properties

This driver has no user-configurable properties.

 

Non-Configurable properties.

Reference: Normal (0-2600mV internal reference).

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Driver Specifications

·  Supply Voltage: 5V

·  Light Level to % Relationship: 100% = 375 mW/cm2 = 2570 Lux @ 550 nm wavelength

·  System Accuracy: 1% of full scale + 28% of measurement

·  Resolution: 1% (typ)

 

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Interface Schematic

 

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