LMP90098MHX/NOPB

Analog Front End (AFE) Overview

The LMP90098MHX/NOPB is a 24-bit, four-channel delta-sigma analog-to-digital converter (ADC) from Texas Instruments. It features an integrated programmable gain amplifier (PGA) and excitation current sources (iDACs). The device operates on a single supply voltage ranging from 2.85 V to 5.5 V for the analog section and 2.7 V to 5.5 V for the digital section. It supports a maximum sampling rate of 214 samples per second and communicates via an SPI interface. The component is housed in a 28-lead HTSSOP package and functions within a temperature range of -40°C to +125°C.

Analog Front End (AFE) Feature Summary

• 24-bit resolution with 4 independent input channels
• Integrated PGA and excitation current sources (iDACs)
• Low power consumption of 1.2 mW
• SPI serial interface compatibility

Analog Front End (AFE) Applications

• Industrial process control sensor interfaces
• High-resolution data acquisition systems
• Precision measurement instrumentation

Analog Front End (AFE) Procurement Notes

Verify the specific suffix 'MHX' against official Texas Instruments documentation to confirm tape-and-reel packaging details. Ensure that the ordering part number matches the exact pinout and electrical specifications required for the target design. Cross-reference with the latest datasheet revision to confirm compliance with RoHS standards and environmental operating limits.

Analog Front End (AFE) Selection Notes

Select this component when high-resolution, multi-channel signal conditioning is required without external amplifiers. The integrated iDACs simplify the drive of resistive sensors such as RTDs or strain gauges. Verify that the system's noise floor is compatible with the 24-bit resolution and that the SPI bus speed does not exceed the ADC's conversion rate capabilities.

Analog Front End (AFE) Part Context

This part belongs to the LMP90098 series of precision sensor AFEs. It is designed to replace discrete solutions involving separate ADCs, PGAs, and current sources. The MHX variant typically denotes a reel-packaged version suitable for automated surface-mount assembly processes.

Analog Front End (AFE) Replacement Considerations

Direct pin-compatible replacements may include other members of the LMP900xx family, such as the LMP90096 or LMP90097, depending on channel count and feature requirements. Verify register compatibility and electrical parameters before substitution.