LMP90099MHX/NOPB

Analog Front End (AFE) Overview

The LMP90099MHX/NOPB is a multi-channel, low-power analog front-end (AFE) integrated circuit manufactured by Texas Instruments. It integrates a 24-bit delta-sigma analog-to-digital converter (ADC) with seven input channels and programmable gain amplifiers (PGAs). The device operates on an analog supply voltage ranging from 2.85 V to 5.5 V and a digital supply voltage from 2.7 V to 5.5 V. It features an SPI interface for communication and supports sampling rates up to 214.6 SPS. Designed for precision sensor applications, it offers low power consumption of 1.2 mW and functions within a temperature range of -40°C to +125°C.

Analog Front End (AFE) Feature Summary

• Integrates a 24-bit, 7-channel sigma-delta ADC with programmable gain amplifiers.
• Supports SPI digital interface for data transfer and configuration.
• Low power consumption of 1.2 mW with wide operating temperature range (-40°C to +125°C).
• Operates on dual supplies: 2.85 V to 5.5 V (analog) and 2.7 V to 5.5 V (digital).

Analog Front End (AFE) Applications

• Industrial process control sensor signal conditioning.
• Multi-channel data acquisition systems requiring high resolution.
• Precision measurement instruments utilizing strain gauges or thermocouples.

Analog Front End (AFE) Procurement Notes

Verify the specific suffix 'X' against official Texas Instruments documentation to confirm tape-and-reel packaging versus tube packaging, as datasheets may list variations. Confirm current availability status directly with authorized distributors, as lead times and stock levels fluctuate. Ensure compatibility with system voltage requirements (2.7 V–5.5 V digital, 2.85 V–5.5 V analog) before procurement.

Analog Front End (AFE) Selection Notes

Select this component when seven independent high-resolution channels are required in a single package. The 24-bit resolution and PGA integration simplify external circuitry for low-level sensor signals. Verify that the maximum sampling rate of 214.6 SPS meets application bandwidth needs. Ensure the PCB layout accommodates the HTSSOP-28 package and provides adequate thermal management for operation up to +125°C.

Analog Front End (AFE) Part Context

This part belongs to the LMP90099 family of multi-channel AFEs. It shares architectural similarities with other devices in the series but is distinguished by its seven-channel configuration. It serves as a direct replacement for older multi-channel ADC solutions where board space and power consumption are critical constraints in industrial and instrumentation designs.

Analog Front End (AFE) Replacement Considerations

Check for pin-compatible alternatives within the TI LMP90xxx family if channel count or sampling rate requirements differ. Verify that any substitute maintains the same HTSSOP-28 footprint and SPI protocol compatibility. Cross-reference electrical specifications such as input voltage ranges and noise performance to ensure functional equivalence.