Differential Pyroelectric Detectors

Laser Components Canada Inc., Laser Components USA Inc.Request Info
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Differential Pyroelectric DetectorsLaser Components’ LD21xx series of Differential Pyroelectric Detectors is now available as a Diff|2 version with a classic three-pin housing.

Like the four-pin models, the charge carriers on the top and bottom of the chip are amplified separately, which leads to a 50 percent improvement of the signal-to-noise ratio. With the new Diff|2 (LD2120) detectors, both signals are fed into a differential amplifier within the housing. Thus, the outward design of the component matches the familiar appearance with single supply, ground, and output pins.

Since the signals of both chip sides are amplified separately, the detector signal is doubled, while the background noise increases only by a factor of 1.4. This leads to significant improvements in the sensibility of IR analysis devices. The separate signal outputs of the four-pin LD2100 detector render it insensitive to interference currents.

Published: July 2018
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