The R&D team at LASER COMPONENTS Pyro Group reached deep into their bag of tricks to produce a pyroelectric detector that not only gives you double the signal compared to a single ended detector when used with a differential amplifier, but the noise only increases by √2.
This produces an improvement in signal to noise ratio of around 1.4. Pyroelectric detectors with a differential amplifier have two additional advantages: External interference signals are eliminated by signal subtraction. Thus, they can be used in critical environments with electric fields.
Furthermore, the LD2100 series makes simple wiring possible, with which the signal outputs are connected directly to the inputs of the differential AD converter.
Pyroelectric detectors are used in NDIR and FTIR spectroscopy, IR laser-based measurement technology, pyrometry, and in flame and fire detection: The components are inexpensive, reliable, robust, and are highly sensitive from short to long IR wavelengths as thermal detectors.