LMP90080QMHX/NOPB

Analog Front End (AFE) Overview

The LMP90080QMHX/NOPB is a single-channel, high-precision analog front-end (AFE) integrated circuit manufactured by Texas Instruments. Designed for resistance temperature detector (RTD) applications, it integrates a 24-bit delta-sigma analog-to-digital converter (ADC), programmable gain amplifier (PGA), and precision current sources. The device operates within an extended industrial temperature range of -40°C to +125°C and supports supply voltages from 2.7V to 5.5V. It utilizes a 20-pin HTSSOP package and communicates via an SPI interface, providing accurate digital conversion for industrial sensing tasks.

Analog Front End (AFE) Feature Summary

• Integrated 24-bit Delta-Sigma ADC with selectable data rates up to 320 SPS
• On-chip precision current sources for RTD excitation
• Programmable Gain Amplifier (PGA) with gains from 1 to 128
• SPI-compatible digital interface for configuration and data readout

Analog Front End (AFE) Applications

• Industrial process control temperature monitoring
• Factory automation sensor interfaces
• HVAC system temperature measurement

Analog Front End (AFE) Procurement Notes

Verify the specific suffix 'Q' indicates automotive qualification status against the official datasheet. Confirm the package type is HTSSOP-20 and check RoHS compliance details in the manufacturer's documentation before procurement.

Analog Front End (AFE) Selection Notes

Select this component when a single-channel RTD solution with high resolution is required. Ensure the application needs only one channel, as other variants may offer multiple channels. Verify that the SPI interface compatibility matches the host microcontroller.

Analog Front End (AFE) Part Context

This part belongs to the LMP90080 family of analog front-ends designed specifically for RTD signal conditioning. It simplifies design by integrating ADC, PGA, and reference components into a single package, reducing board space compared to discrete solutions.

Analog Front End (AFE) Replacement Considerations

Check for LM96080 or similar TI AFEs if multi-channel or different sensor types are needed. Verify pin-out compatibility with existing designs before substituting.