| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
|---|---|---|---|---|---|---|---|---|---|
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15,067 pcs
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15067 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
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| Automotive Grade | |
| Industrial Grade | |
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| Medical Grade | |
| Military Grade | |
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| Tape & Reel | |
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The LMP91051MT/NOPB from Texas Instruments is a dual-channel, programmable Analog Front End (AFE) designed for NDIR sensing applications. This device offers a comprehensive signal path, interfacing directly between a sensor and a microcontroller to generate an output voltage proportional to the sensor's input.
Key features include a programmable gain amplifier (PGA) with both low and high gain ranges, "dark phase" offset cancellation for improved ADC utilization, and an adjustable common mode generator. The PGA supports sensitivities from 167V/V up to 7986V/V, with low gain drift, output offset drift, and phase delay drift. The offset cancellation circuitry effectively removes the "dark signal" offset, relaxing ADC resolution requirements.
Additional capabilities include support for external filtering (high-pass, low-pass, or band-pass) via dedicated pins and an 8-bit DAC for offset cancellation. The device communicates via a serial SPI interface. It operates over a wide temperature range of -40°C to 105°C and is available in a compact 14-pin TSSOP package, suitable for surface mounting.
This AFE is optimized for thermopile sensors, enabling a single design to support multiple sensor types, reducing the need for multiple discrete solutions. Its programmability and integrated features make it a versatile component for various sensing applications.
| Qty | Low | High |
|---|---|---|
| 1+ | $2.71 | $2.71 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The operating temperature range is -40°C to 105°C.
The supply voltage range is 2.7V to 5.5V.
It uses a Serial SPI interface.
It has 2 input channels.
The package type is 14-TSSOP.
The low gain range is 167 V/V to 1335 V/V, and the high gain range is 1002 V/V to 7986 V/V.
Yes, it features "dark phase" offset cancellation and an 8-bit DAC for this purpose.