Pyroelectric infrared sensor

17 March 2010 Opto-Electronics

The latest version of Murata’s pyroelectric infrared (PIR) sensor is claimed to be the world’s smallest at just 5,0 x 4,7 x 2,4 mm, enabling its use in compact, low-profile electronic devices and equipment. The surface-mount IRS-B210ST01-R1 features high sensitivity and signal to noise ratio, excellent stability against temperature changes, and white light and enhanced RFI immunity.

The IRS-B210ST01-R1 series is suitable for person detection for security and proximity sensing applications, since it detects infrared at the wavelength emitted by the human body. Its small package size makes it suitable for consumer devices. The device features dual 0,85 x 1,2 mm electrodes with a field of vision of ±70° (horizontal) and ±50° (vertical). Its operating temperature range is -40°C to +70°C and the device is driven by a supply voltage in the range of 2 to 15 V.

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