Texas Instruments LMP91050 Configurable AFE for Nondispersive Infrared (NDIR) Sensing Applications LMP91050MMX/NOPB

The LMP91050MMX/NOPB is a programmable analog front end (AFE) designed for nondispersive infrared (NDIR) sensing applications, particularly optimized for thermopile sensors. It features a programmable gain amplifier with a gain range from 167 V/V to 7986 V/V, allowing compatibility with various thermopile sensitivities. The device includes dark signal offset cancellation to enhance signal accuracy and supports external filtering through dedicated pins for noise reduction. Operating within a supply voltage range of 2.7 to 5.5 V, the LMP91050MMX/NOPB is capable of low noise performance, with a noise specification of 0.1 OºVRMS from 0.1 to 10 Hz. It also incorporates an adjustable common-mode generator, which can be set to either 1.15 V or 2.59 V, improving the output dynamic range. The device is housed in a compact 10-pin VSSOP package and is rated for operation in temperatures from -40¬8C to 105¬8C, making it suitable for a variety of environmental conditions.