Product details

Resolution (Bits) 24 Number of input channels 8 Sample rate (Max) (kSPS) 2 Interface type SPI Architecture Delta-Sigma Input type Differential, Single-Ended Multi-channel configuration Multiplexed Rating Catalog Reference mode Ext, Int Input range (Max) (V) 2.125, 4.25 Input range (Min) (V) -2.125, 0 Features 50/60 Hz Rejection, Excitation Current Sources (iDACs), GPIO, Oscillator, PGA, Temp Sensor Operating temperature range (C) -40 to 125 Power consumption (Typ) (mW) 2.3 Analog voltage AVDD (Min) (V) 2.7 Analog voltage AVDD (Max) (V) 5.25 Digital supply (Min) (V) 2.7 Digital supply (Max) (V) 5.25
Resolution (Bits) 24 Number of input channels 8 Sample rate (Max) (kSPS) 2 Interface type SPI Architecture Delta-Sigma Input type Differential, Single-Ended Multi-channel configuration Multiplexed Rating Catalog Reference mode Ext, Int Input range (Max) (V) 2.125, 4.25 Input range (Min) (V) -2.125, 0 Features 50/60 Hz Rejection, Excitation Current Sources (iDACs), GPIO, Oscillator, PGA, Temp Sensor Operating temperature range (C) -40 to 125 Power consumption (Typ) (mW) 2.3 Analog voltage AVDD (Min) (V) 2.7 Analog voltage AVDD (Max) (V) 5.25 Digital supply (Min) (V) 2.7 Digital supply (Max) (V) 5.25
TSSOP (PW) 28 62 mm² 9.7 x 6.4
  • 24 Bits, No Missing Codes
  • Programmable Data Rates Up to 2 kSPS
  • Single-Cycle Settling for All Data Rates
  • Simultaneous 50-Hz and 60-Hz Rejection at 20 SPS
  • Analog Multiplexer With 8 (ADS1248) and 4
    (ADS1247) Independently Selectable Inputs
  • Low-Noise PGA: 48 nVRMS at PGA = 128
  • Dual-Matched Programmable Excitation Current Sources
  • Low-Drift Internal 2.048-V Reference:
    10 ppm/°C (Maximum)
  • Sensor Burn-Out Detection
  • 4 or 8 General-Purpose I/Os (ADS1247, ADS1248)
  • Internal Temperature Sensor
  • Power Supply and VREF Monitoring (ADS1247, ADS1248)
  • Self and System Calibration
  • SPI™-Compatible Serial Interface
  • Analog Supply: Unipolar (2.7 V to 5.25 V) and Bipolar (±2.5 V) Operation
  • Digital Supply: 2.7 V to 5.25 V
  • Operating Temperature –40°C to 125°C
  • APPLICATIONS
    • Temperature Sensor Measurements:
      • RTDs, Thermocouples, and Thermistors
    • Pressure Measurements
    • Flow Meters
    • Factory Automation and Process Controls

All other trademarks are the property of their respective owners

  • 24 Bits, No Missing Codes
  • Programmable Data Rates Up to 2 kSPS
  • Single-Cycle Settling for All Data Rates
  • Simultaneous 50-Hz and 60-Hz Rejection at 20 SPS
  • Analog Multiplexer With 8 (ADS1248) and 4
    (ADS1247) Independently Selectable Inputs
  • Low-Noise PGA: 48 nVRMS at PGA = 128
  • Dual-Matched Programmable Excitation Current Sources
  • Low-Drift Internal 2.048-V Reference:
    10 ppm/°C (Maximum)
  • Sensor Burn-Out Detection
  • 4 or 8 General-Purpose I/Os (ADS1247, ADS1248)
  • Internal Temperature Sensor
  • Power Supply and VREF Monitoring (ADS1247, ADS1248)
  • Self and System Calibration
  • SPI™-Compatible Serial Interface
  • Analog Supply: Unipolar (2.7 V to 5.25 V) and Bipolar (±2.5 V) Operation
  • Digital Supply: 2.7 V to 5.25 V
  • Operating Temperature –40°C to 125°C
  • APPLICATIONS
    • Temperature Sensor Measurements:
      • RTDs, Thermocouples, and Thermistors
    • Pressure Measurements
    • Flow Meters
    • Factory Automation and Process Controls

All other trademarks are the property of their respective owners

The ADS1246, ADS1247, and ADS1248 are highly-integrated, precision, 24-bit analog-to-digital converters (ADCs). The devices feature an onboard, low-noise, programmable gain amplifier (PGA), a precision delta-sigma (ΔΣ) ADC with a single-cycle settling digital filter, and an internal oscillator. The ADS1247 and ADS1248 also provide a built-in, very low drift voltage reference with 10-mA output capacity, and two matched programmable current digital-to-analog converters (DACs). The devices provide a complete front-end solution for temperature sensor applications including thermal couples, thermistors, and resistance temperature detectors (RTDs).

An input multiplexer supports four differential inputs for the ADS1248, two for the ADS1247, and one for the ADS1246. In addition, the multiplexer has a sensor burn-out detect, voltage bias for thermocouples, system monitoring, and general-purpose digital I/Os (ADS1247 and ADS1248). The onboard, low-noise PGA provides selectable gains of 1 to 128. The ΔΣ modulator and adjustable digital filter settle in only one cycle, for fast channel cycling when using the input multiplexer, and support data rates up to 2 kSPS. For data rates of 20 SPS or less, both 50-Hz and 60-Hz interference are rejected by the filter.

The ADS1246, ADS1247, and ADS1248 are highly-integrated, precision, 24-bit analog-to-digital converters (ADCs). The devices feature an onboard, low-noise, programmable gain amplifier (PGA), a precision delta-sigma (ΔΣ) ADC with a single-cycle settling digital filter, and an internal oscillator. The ADS1247 and ADS1248 also provide a built-in, very low drift voltage reference with 10-mA output capacity, and two matched programmable current digital-to-analog converters (DACs). The devices provide a complete front-end solution for temperature sensor applications including thermal couples, thermistors, and resistance temperature detectors (RTDs).

An input multiplexer supports four differential inputs for the ADS1248, two for the ADS1247, and one for the ADS1246. In addition, the multiplexer has a sensor burn-out detect, voltage bias for thermocouples, system monitoring, and general-purpose digital I/Os (ADS1247 and ADS1248). The onboard, low-noise PGA provides selectable gains of 1 to 128. The ΔΣ modulator and adjustable digital filter settle in only one cycle, for fast channel cycling when using the input multiplexer, and support data rates up to 2 kSPS. For data rates of 20 SPS or less, both 50-Hz and 60-Hz interference are rejected by the filter.

Download

Similar products you might be interested in

open-in-new Compare products
Similar functionality 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 noise & power, smaller package, and better VREF drift, OSC accuracy & IDAC matching

Technical documentation

star = Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 16
Type Title Date
* Data sheet ADS124x 24-Bit, 2-kSPS, Analog-To-Digital Converters With Programmable Gain Amplifier (PGA) For Sensor Measurement datasheet (Rev. H) 31 Mar 2016
User guide ADS1x48EVM Evaluation Module 10 Sep 2021
Application note ADS124S08 3-Wire PT100 RTD Measurement Circuit w/ Low-Side Reference and 1 IDAC (Rev. B) 09 Sep 2021
Application note Three-Wire PT100 RTD Measurement Circuit With Low-Side Reference (Rev. C) 24 Aug 2021
E-book Fundamentals of Precision ADC Noise Analysis 19 Jun 2020
Application note K-type thermocouple measurement circuit with precision ADC 19 Mar 2019
Application note A Basic Guide to Thermocouple Measurements 28 Sep 2018
Application note A Basic Guide to RTD Measurements 19 Jun 2018
Application note Digital Filter Types in Delta-Sigma ADCs 27 Jun 2017
Technical article Delta-sigma ADC digital filter types: sinc filters 10 Jun 2016
Technical article The impact of voltage reference noise on delta-sigma ADC resolution 11 Dec 2015
Technical article Help! My data converter’s giving bad data! What’s wrong? 07 Aug 2015
Technical article Understanding input range requirements for Precision ADCs with integrated PGAs 21 Jul 2015
E-book Best of Baker's Best: Precision Data Converters -- Delta-Sigma ADCs 19 Mar 2015
Application note RTD Ratiometric Measurements and Filtering Using the ADS1148 and ADS1248 13 Mar 2013
User guide ADS1148/ADS1248EVM and ADS1148/ADS1248EVM-PDK User's Guide (Rev. B) 11 May 2011

Design & development

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

Evaluation board

ADCPRO — Analog-to-digital converter pro (ADCPro™) evaluation software

ADCPro™ is a modular software system for evaluating analog-to-digital converters (ADCs) without the need for expensive logic analyzers and complex analysis routines. Used alone it is suitable for performing analysis on data sets captured from ADC testing; when paired with a Texas Instruments (...)

Evaluation board

ADS1248EVM-PDK — ADS1248 Performance Demonstration Kit

The ADS1248EVM-PDK is a complete evaluation/demonstration kit, which combines the ADS1248EVM with the MSP430-based MMB3 motherboard for use with a personal computer. The MMB3 motherboard allows the ADS1248EVM to connect to a computer via a USB port. The ADS1248EVM-PDK is controlled by the (...)

Support software

ADS1x4x Firmware Example Code

SBAC144.ZIP (572 KB)
Support software

ADS1248EVM-PDK Software

SBAC239.ZIP (15577 KB)
Simulation model

ADS1x4x IBIS Model

SBAM010.ZIP (120 KB) - IBIS Model
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Simulation tool

TINA-TI — SPICE-based analog simulation program

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 (...)
Calculation tool

ADC-INPUT-CALC — Analog-to-digital converter (ADC) input driver design tool supporting multiple input types

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 (...)
Calculation tool

ANALOG-ENGINEER-CALC — Analog engineer's calculator

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 (...)
Reference designs

TIPD120 — 3-wire RTD Acquisition System Accurately Measures Temperature From -200°C - 850°C

This TI Precision Verified Design provides the theory, component selection, simulation, complete PCB schematic & layout, bill of materials, and measured performance of a single-supply, 3-wire RTD acquisition system that accurately measures temperature from  -200°C - 850°C.  The (...)
Reference designs

PMP40280 — Bi-Directional Battery Initialization System Control Board Reference Design

The PMP40280 is a battery initialization reference design solution for automotive and battery applications. The MCU TM4C123GH6PZ sets charging/discharging current and real time monitors battery voltage and charging/discharging current. It will calibrate system gain error to meet (...)
Reference designs

TIDA-00463 — Fluxgate Based Displacement Sensor Reference Design

The TIDA-00463 showcases a displacement sensor for linear distance measurements in a BoosterPack form factor for TI LaunchPad.  The design is suitable for any application where a distance measurement, even through non-magnetic materials, is needed and non-contact, wear-free measurements are (...)
Reference designs

TIDA-00110 — Analog Front End (AFE) for Sensing Temperature in Smart Grid Applications Using RTD Reference Design

This reference design enables up to 4 Resistor Temperature Detectors (RTD) to be connected through one ADC in manner such that the solution is both compact and modular. Communication from the ADC to the processor is though an SPI interface. If 8 RTDs are required for an application, simply connect (...)
Reference designs

TIPD164 — Analog Input Module for Industrial Outputs and Temperature Sensors Reference Design

This reference design that is precision verified implements an analog input module for industrial voltages, currents and temperature sensors.  For industrial outputs, the possible input ranges include: 4 to 20 mA, 0 to 20 mA, +/-25 mA, 0 to 5 V, 0 to 10 V, +/-5 V and +/-10 V. The design (...)
Package Pins Download
TSSOP (PW) 28 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

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. ​​​​​​​​​​​​​​

Videos