TSL25721FN

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Ambient
Wavelength:	4000K
Proximity Detection:	No
Output Type:	I²C
Voltage - Supply:	2.4 V ~ 3.6 V
Operating Temperature:	-30°C ~ 70°C
Mounting Type:	Surface Mount
Package / Case:	6-WDFN
Supplier Device Package:	6-DFN (2x2)

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Optical Sensors - Ambient Light, IR, UV Sensors

Optical sensors are used for sensing a variety of physical parameters, such as level, position, distance, and velocity. Optical sensors can measure ambient light, infrared, visible and ultraviolet radiation, as well as chemical composition and temperature. One example of an optical sensor is the TSL25721FN.The TSL25721FN is an ambient light and infrared (IR) sensor with an I2C digital output. It measures the light intensity in both visible and IR wavelengths. The device is configured through register settings that enable the user to define the IR rejection levels and readback configuration. It is capable of measuring a wide range of incident light levels, making it suitable as an ambient light sensor in several different applications.

TSL25721FN Application Field

The TSL25721FN can be used in a wide range of applications that require the measurement of light intensity. In the automotive industry, the TSL25721FN can be used for dimming rearview mirrors, switches, and other lighting components within a car. In consumer electronics, the TSL25721FN can be used to detect ambient light changes and adjust the display brightness accordingly. In medical applications, it can be used to measure light intensity in EXIT signs, medical instruments, or lab equipment. The TSL25721FN is also used in industrial automation for monitoring machine operability or positioning with greater precision.

TSL25721FN Working Principle

The TSL25721FN uses a visible and infrared dual-diode setup composed of two photodiodes, one detecting visible light and the other detecting infrared. The device uses a two-integrator system with an analog-to-digital converter and provides 10-bit, digital output via I2C. The output is linearized and converted to lux or IR output in compliance with JEITA standards. The device is capable of detecting light intensity in a range from 0 to 151k Lux (max).The TSL25721FN has an adjustable sensitivity range using two programmable IR rejection settings, allowing it to reject unwanted IR radiation. By setting the appropriate IR rejection level, the device can more accurately measure visible light while ignoring infrared signals. This can be especially useful in applications where both visible and near-infrared light are present.The TSL25721FN has a wide power supply voltage range of 2.7V to 5.5V and a low power consumption of 0.3mA. It also has a temperature range of -20°C to 60°C and is environmental hardened. The TSL25721FN is housed in an adjustable 2.0x2.0mm DFN package.In conclusion, the TSL25721FN is a dual-diode ambient light and infrared sensor with a digital I2C output. It provides a wide range of incident light levels and adjustable sensitivity with programmable IR rejection settings. It is suitable for use in a variety of applications, ranging from automotive to consumer electronics and industrial automation.

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