LMP90080MH/NOPB

Analog Front End (AFE) Overview

The LMP90080MH/NOPB is a single-channel, 24-bit delta-sigma analog-to-digital converter (ADC) from Texas Instruments. It features an integrated programmable gain amplifier (PGA), excitation current sources, and a precision voltage reference, designed for high-accuracy sensor signal conditioning. The device operates with a sampling rate of up to 214 samples per second and supports SPI digital interface communication. It accepts single-ended inputs and functions within an analog supply voltage range of 2.85 V to 5.5 V and a digital supply voltage range of 2.7 V to 5.5 V. Packaged in a 28-pin HTSSOP, it is rated for operation between -40°C and +125°C.

Analog Front End (AFE) Feature Summary

• 24-bit resolution with sigma-delta architecture
• Integrated PGA, excitation current sources, and voltage reference
• Single-ended input configuration
• SPI digital interface

Analog Front End (AFE) Applications

• RTD temperature sensing
• Strain gauge measurements
• High-precision industrial sensor interfaces

Analog Front End (AFE) Procurement Notes

Verify the specific suffix 'MH' against the manufacturer's official datasheet to confirm package type and temperature grade. Ensure compatibility with system power supplies within the specified 2.85 V–5.5 V analog and 2.7 V–5.5 V digital ranges. Confirm availability status through authorized distributors as supply levels may vary.

Analog Front End (AFE) Selection Notes

Select this component when a single-channel, high-resolution ADC with built-in signal conditioning is required. The integrated current sources simplify RTD circuit designs by eliminating external excitation components. Compare channel count and resolution requirements against multi-channel alternatives like the LMP90098 if multiple sensors are needed.

Analog Front End (AFE) Part Context

This part belongs to the LMP900xx family of sensor front-end ADCs from Texas Instruments. These devices combine data conversion with analog front-end functions to reduce bill-of-materials complexity in precision measurement applications. The LMP90080 specifically targets single-channel applications requiring high accuracy without external amplification or reference circuits.

Analog Front End (AFE) Replacement Considerations

The LMP90098MHE/NOPB offers similar functionality but provides four channels instead of one. Verify pinout compatibility and software register mapping differences before substitution.