DESCRIPTION

· The LMP91050 is a programmable integrated Sensor Analog Front End (AFE) optimized for thermopile sensors, typically used in NDIR applications.

· It provides a complete signal path solution between a sensor and microcontroller, generating an output voltage proportional to the thermopile voltage.

· The device supports multiple thermopile sensors with a single design, featuring a programmable gain amplifier (PGA), dark phase offset cancellation, and an adjustable common-mode generator.

FEATURES

· Programmable Gain Amplifier with a range of 167 to 7986 V/V.

· Dark Signal Offset Cancellation and supports external filtering.

· Common-Mode Generator and 8-Bit DAC.

· Low Noise (0.1 to 10Hz) at 0.1μVRMS and Gain Drift of 100ppm/°C (Maximum).

· Phase Delay Drift of 500ns (Maximum) and operates with a Power Supply Voltage Range of 2.7 to 5.5V.

APPLICATIONS

· NDIR Sensing and Demand Control Ventilation.

· Building Monitoring and CO2 Cabin Control in Automotive.

· Alcohol Detection in Automotive and Industrial Safety and Security.

· GHG and Freons Detection Platforms.