BPW34 Sensors, Transducers

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The BPW34 is a silicon-based, planar optical sensor from Infineon Technologies. This device offers many advantages over other photodiodes due to its size, accuracy, and increased optical sensitivity. It is typically used in a variety of applications where optical sensors are desired, such as automotive light-sensing, medical imaging, and home and industrial automation.

The BPW34 is a complete unit consisting of a silicon-based detector on a single silicon chip. It consists of a photodiode, associated support circuitry, plus several associated passive elements. The detector has an active area of just 2.2 mm² and a size of only 6.7 mm x 6.7 mm. The planar configuration enables the device to be used in applications that require integration into tight spaces.

The BPW34 is most sensitive to light in the near-infrared range (NIR) and has a high responsivity (0.95 A/W).The sensor is optimised with a spectral response range of 850-940 nm, meaning it can detect most types of infrared light sources. This enables the BPW34 to be used in a wide range of lighting applications, both indoors and outdoors. Additionally, the BPW34 can provide accurate readings in environments filled with fluorescent, halogen, or incandescent lighting.

The primary operating principle of the BPW34 involves the conversion of optical energy into electrical energy. This is accomplished by the photodiode, which is the active element inside the device. The BPW34 converts light energy into electrical current through the action of two pn-junctions connected in series. When light of the appropriate frequency and intensity is incident upon the photodiode, it creates an electric current that is proportional to the intensity of the light. This then produces a varying output voltage that can be read and measured by a suitable control circuit.

The BPW34 is an ideal choice for a variety of applications due to its reliability and ability to detect a wide range of light intensity and wavelengths. It’s small size and enhanced optical sensitivity make it suitable for applications requiring tight integration of the sensor. Additionally, the BPW34’s high-sensitivity photodiode can provide accurate readings in highly illuminated environments.

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