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Home » NEWEST Products » New by Manufacturer » Texas Instruments » LMP91050 Configurable AFE - TI
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National Products from Texas Instruments LMP91050 Configurable AFE for NDIR Sensing Applications

TI LMP91050 Configurable AFE

Texas Instruments LMP91050 Configurable AFE for NDIR Sensing Applications is a programmable integrated Sensor Analog Front End optimized for thermopile sensors, as typically used in Nondispersive Infrared (NDIR) applications. TI LMP91050 AFE provides a complete signal path solution between a sensor and microcontroller that generates an output voltage proportional to the thermopile voltage. The LMP91050's programmability enables it to support multiple thermopile sensors with a single design as opposed to the multiple discrete solutions. TI LMP91050 features a programmable gain amplifier (PGA), "dark phase" offset cancellation, and an adjustable common mode generator (1.15V or 2.59V) that increases output dynamic range.

Features
  • Programmable gain amplifier
  • "Dark Signal" offset cancellation
  • Supports external filtering
  • Common mode generator and 8 bit DAC
  • 10 pin MSOP package

Key Specifications
  • Programmable gain: 167V/V to 7986V/V
  • Low noise (0.1 to 10 Hz): 0.1μVRMS
  • Gain Drift: 100 ppm/°C (max)
  • Phase Delay Drift: 500ns (max)
  • Power supply voltage range: 2.7V to 5.5V
Applications
  • NDIR sensing
  • Demand control ventilation
  • Building monitoring
  • CO2 cabin control — Automotive
  • Alcohol detection — Automotive
  • Industrial safety and security
  • GHG & Freons detection platforms

Block Diagram

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  • Texas Instruments