LMP91200MTX/NOPB

Sensor And Detector Interfaces Overview

The LMP91200MTX/NOPB is an analog front-end integrated circuit designed for low-power pH sensing applications. It integrates a high-impedance electrometer amplifier, a precision voltage reference, and a current source to facilitate direct interfacing with pH sensors. The device operates on a single supply voltage ranging from 1.8 V to 5.5 V. It features a built-in 16-bit sigma-delta analog-to-digital converter with an SPI digital interface, eliminating the need for external ADCs. The component is housed in a TSSOP-16 package and supports an operating temperature range from -40°C to +125°C.

Sensor And Detector Interfaces Feature Summary

• Integrates a high-input impedance electrometer amplifier suitable for high-impedance sensor sources
• Includes an internal 16-bit sigma-delta ADC with serial peripheral interface output
• Provides integrated precision voltage reference and programmable current source

Sensor And Detector Interfaces Applications

• Low-power pH sensing systems
• Industrial process control monitoring
• Environmental water quality analysis

Sensor And Detector Interfaces Procurement Notes

Verify the complete part number including the suffix before ordering, as variations may exist. Confirm that the specific revision matches the design requirements. Check for moisture sensitivity level indicators on the packaging. Ensure the supplier provides valid traceability documentation. Validate that the component meets RoHS compliance standards required for the target market.

Sensor And Detector Interfaces Selection Notes

Select this component when a compact solution for pH measurement is required without external signal conditioning. It is appropriate for battery-operated devices due to its low power consumption profile. Consider the TSSOP-16 package constraints during PCB layout. Verify that the system microcontroller supports the required SPI communication protocol. Evaluate the thermal performance within the specified operating temperature range.

Sensor And Detector Interfaces Part Context

This device belongs to the LMP91200 series of analog front-ends specialized for chemical sensing. It is manufactured by Texas Instruments and is often evaluated using the LMP91200EVAL/NOPB development kit. The component falls under the category of data converter ICs and is distinct from general-purpose operational amplifiers due to its integrated digitization capabilities.

Sensor And Detector Interfaces Replacement Considerations

No publicly confirmed substitute part numbers are available in the provided documentation. Direct replacements should be verified against pin compatibility and electrical specifications.