LMP90080QMH/NOPB

Analog Front End (AFE) Overview

The LMP90080QMH/NOPB is a multi-channel, low-power 16-bit Analog Front End (AFE) from Texas Instruments. It integrates a Sigma-Delta ADC with programmable gain amplifiers and excitation current sources. The device supports differential or single-ended inputs across multiple channels, operating on analog supply voltages from 2.85 V to 5.5 V and digital supplies from 2.7 V to 5.5 V. It features a 28-lead HTSSOP package and offers sampling rates up to 214 S/s. Designed for industrial applications, it operates within a temperature range of -40°C to +125°C.

Analog Front End (AFE) Feature Summary

• Integrates a 16-bit Sigma-Delta ADC with programmable gain amplifiers ranging from 1x to 128x gain.
• Includes built-in excitation current sources (iDACs) for direct sensor interfacing.
• Supports both differential and single-ended input configurations for flexible signal acquisition.

Analog Front End (AFE) Applications

• Industrial process control systems requiring high-resolution sensor data acquisition
• Multi-point temperature monitoring using RTDs or thermocouples
• Strain gauge and load cell measurement in weighing scales

Analog Front End (AFE) Procurement Notes

Verify the specific suffix 'Q' indicates automotive qualification requirements against your design specifications. Confirm the package type matches your PCB footprint, as variations exist between standard and qualified versions. Ensure power supply rails align with the specified voltage ranges for both analog and digital domains before integration.

Analog Front End (AFE) Selection Notes

Select this component when high channel count and precision are required in a compact form factor. The integrated iDACs simplify circuit design by eliminating external excitation sources. Consider the thermal performance and power consumption constraints, as the device is optimized for low-power operation while maintaining 16-bit resolution accuracy.

Analog Front End (AFE) Part Context

This part belongs to the LMP90080 family of sensor AFEs designed for robust industrial environments. It shares architectural similarities with other members but differs in channel count and packaging options. The Q-series designation typically denotes enhanced reliability standards suitable for automotive or harsh industrial deployments compared to standard commercial variants.

Analog Front End (AFE) Replacement Considerations

Direct substitutes include the LMP90080MH/NOPB for non-automotive applications. For single-channel requirements, consider the LMP90081 series. Verify pin compatibility and software register settings when migrating between different channel counts within the same family.