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20 pcs
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20 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
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The Texas Instruments LMP91051MTX/NOPB is a dual-channel programmable Analog Front End (AFE) designed for NDIR sensing applications. It offers a complete signal path from sensor to microcontroller, generating an output voltage proportional to the thermopile voltage.
Key features include a programmable gain amplifier (PGA) with low gain ranges from 167V/V to 1335V/V and high gain ranges from 1002V/V to 7986V/V. It also incorporates "dark phase" offset cancellation and an adjustable common mode generator with 8-bit DAC resolution. The device supports external filtering for noise reduction and is programmable via an onboard SPI interface.
Designed for flexibility, the LMP91051's programmability allows it to support multiple thermopile sensors with a single design. It operates over an industrial temperature range of -40°C to 105°C and is available in a compact 14-pin TSSOP package, suitable for surface mount applications.
This AFE is optimized for thermopile sensors, commonly used in Non-Dispersive Infrared (NDIR) sensing. Its features like offset cancellation and adjustable gain help in optimizing ADC usage and relaxing ADC resolution requirements.
| Qty | Low | High |
|---|---|---|
| 1+ | $2.04 | $2.04 |
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 is available in a 14-TSSOP package.
It uses a Serial SPI interface.
It has 2 input channels.