PH5503A2NA1-Y-A

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Optical Sensors - Ambient Light, IR, UV Sensors

The PH5503A2NA1-Y-A is an ambient light, IR, and UV Sensor designed for a range of applications. This device features a 3.3V supply voltage, digital and analog output, and an operating temperature range of -25°C to +85°C.

Application Field

The PH5503A2NA1-Y-A is suitable for a variety of applications, from interior lighting such as footwell lights to monitoring solar UV exposure in outdoor applications. The digital output provides a convenient and easy-to-use interface, while the analog output can be used for precision measurements. In addition to light levels, the device can detect human presence in its vicinity and can be used as a motion sensor.

Working Principle

The PH5503A2NA1-Y-A utilizes a light-to-frequency converter, along with a reference oscillator circuit, to measure ambient light levels. The device continuously counts the number of cycles of the reference oscillator for a set number of samples of the incoming light level. This counted value is then discarded and replaced with the next sample, and this process is repeated until the desired number of samples has been taken.

The device also features an on-chip optical filter and programmable digital filters. The optical filter helps to eliminate “noise” from outside sources, while the digital filters help to ensure accuracy in the measurements taken. In addition, the on-chip microcontroller also helps to detect movement and to provide an output when motion is detected.

Conclusion

The PH5503A2NA1-Y-A is a highly advanced ambient light, IR, and UV Sensor designed for a variety of applications. It features a 3.3V supply voltage, digital and analog outputs, and an operating temperature range of -25°C to +85°C. The device utilizes a light-to-frequency converter, along with a reference oscillator circuit, to measure ambient light levels. In addition, the on-chip optical filter and digital filters help to ensure accuracy in the readings taken, while the onboard microcontroller helps to detect motion and provide an output when motion is detected.

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