Product details


Resolution (Bits) 24 Number of input channels 7 Sample rate (Max) (kSPS) 0.215 Interface type SPI Architecture Delta-Sigma Input type Differential, Single-Ended Multi-channel configuration Multiplexed Rating Catalog Reference mode Ext Input range (Max) (V) 5.5 Input range (Min) (V) 0 Features Excitation Current Sources (iDACs), PGA Operating temperature range (C) -40 to 125 Power consumption (Typ) (mW) 1.2 Analog voltage AVDD (Min) (V) 2.85 Analog voltage AVDD (Max) (V) 5.5 Digital supply (Min) (V) 2.7 Digital supply (Max) (V) 5.5 open-in-new Find other Precision ADCs (<=10MSPS)

Package | Pins | Size

HTSSOP (PWP) 28 43 mm² 9.7 x 4.4 open-in-new Find other Precision ADCs (<=10MSPS)


  • 24-Bit, Low-Power Sigma-Delta ADC
  • True Continuous Background Calibration at all
  • In-Place System Calibration Using Expected
    Value Programming
  • Low-Noise Programmable Gain (1x to 128x)
  • Continuous Background Open / Short and Out-of-
    Range Sensor Diagnostics
  • 8 Output Data Rates (ODR) With Single-Cycle
  • 2 Matched Excitation Current Sources From 100
    µA to 1000 µA (LMP90100/LMP90098)
  • 4-DIFF / 7-SE Inputs (LMP90100/LMP90099)
  • 2-DIFF / 4-SE Inputs (LMP90098/LMP90097)
  • 7 General-Purpose Input/Output Pins
  • Chopper-Stabilized Buffer for Low Offset
  • SPI 4/3-wire With CRC Data Link Error Detection
  • 50-Hz to 60-Hz Line Rejection at ODR
    ≤13.42 SPS
  • Independent Gain and ODR Selection per
  • Supported by WEBENCHR Sensor AFE Designer
  • Automatic Channel Sequencer
  • Key Specifications
    • ENOB/NFR Up to 21.5/19 Bits
    • Offset Error (Typical) 8.4 nV
    • Gain Error (Typical) 7 ppm
    • Total Noise < 10 µV-rms
    • Integral Nonlinearity (INL Maximum) ± 15 ppm
      of FSR
    • Output Data Rates (ODR) 1.6775 - 214.65
    • Analog Voltage, VA 2.85 to 5.5 V
    • Operating Temp Range –4°C to 125°C
    • 28-Pin HTSSOP Exposed Pad
open-in-new Find other Precision ADCs (<=10MSPS)


The LMP90xxx is a highly integrated, multichannel, low-power, 24-bit Sensor AFEs. The devices features a precision, 24-bit Sigma-Delta analog-to-digital converter (ADC) with a low-noise programmable gain amplifier and a fully differential high-impedance analog input multiplexer. A true continuous background calibration feature allows calibration at all gains and output data rates without interrupting the signal path. The background calibration feature essentially eliminates gain and offset errors across temperature and time, providing measurement accuracy without sacrificing speed and power consumption.

Another feature of the LMP90100/LMP90099/LMP90098/LMP90097 is continuous background sensor diagnostics, allowing the detection of open and short-circuit conditions and out-of-range signals, without requiring user intervention, resulting in enhanced system reliability.

Two sets of independent external reference voltage pins allow multiple ratiometric measurements. In addition, two matched programmable current sources are available in the LMP90100/LMP90098 to excite external sensors such as resistive temperature detectors and bridge sensors. Furthermore, seven GPIO pins are provided for interfacing to external LEDs and switches to simplify control across an isolation barrier.

Collectively, these features make the LMP90100/LMP90099/LMP90098/LMP90097 complete analog front-ends for low-power, precision sensor applications such as temperature, pressure, strain gauge, and industrial process control. The LMP90100/LMP90099/LMP90098/LMP90097 are ensured over the extended temperature range of –40°C to +125°C and are available in a 28-pin HTSSOP package with an exposed pad.

open-in-new Find other Precision ADCs (<=10MSPS)
Similar products you might be interested in
open-in-new Compare products
Similar but not functionally equivalent to the compared device:
ADS124S08 ACTIVE 24-bit, 4-kSPS, 12-ch delta-sigma ADC with PGA and voltage reference for sensor measurement This device has more analog inputs (12), faster sample rate (4kSPS), lower power, smaller package, better DC accuracy, integrated VREF

Technical documentation

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

document-generic User guide

Already own the LMP90100EB and SPIO-4 boards?
Download the
LMP90100 Evaluation Platform Software
(version 2.0.1, zip)

The LMP90100EB is the evaluation board for the LMP90XXX family. In order to interface this board to a PC, a SPIO-4 digital controller board (order both boards separately) is required (...)



  • LMP90100 Evaluation Board

Additional Tools required for evaluation:

  • Temperature, pressure, or strain-gauge sensor of your choice (optional)
  • SPI0-4 digital controller board (order this board separately)
  • LMP90100EB User's Guide
  • WEBENCH® Sensor AFE Design Software and LMP90100 Evaluation (...)
document-generic User guide

The SPIO-4 Digital Controller board is used to read registers, write registers, and capture data from various TI's Sensor AFE and other signal path products. The device evaluation board (for example: LMP90100EB) should be equipped with the GPSI-16 or GPSI-32 header to connect to the SPIO-4 board (...)

Software development

SNAC006.ZIP (28317 KB)
SNAC029.ZIP (115 KB)

Design tools & simulation

SPICE-based analog simulation program
TINA-TI TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
document-generic User guide
Analog-to-digital converter (ADC) input driver design tool supporting multiple input types
ADC-INPUT-CALC ADC-INPUT-CALC is an online tool that provides support for designing the input buffer to an analog-to-digital converter (ADC). It offers 24 different op-amp based buffer circuits that can be used to drive an ADC input. The available topologies cover differential, single-ended and transformer-coupled (...)
Analog engineer's calculator
ANALOG-ENGINEER-CALC — The Analog Engineer’s Calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting op-amp gain with feedback (...)
  • Expedites circuit design with analog-to-digital converters (ADCs) and digital-to-analog converters (DACs)
    • Noise calculations
    • Common unit translation
  • Solves common amplifier circuit design problems
    • Gain selections using standard resistors
    • Filter configurations
    • Total noise for common amplifier configurations
  • (...)

CAD/CAE symbols

Package Pins Download
HTSSOP (PWP) 28 View options

Ordering & quality

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​


Related videos