ADS1274

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24-Bit, 144kSPS, 4-Ch Simultaneous-Sampling Delta-Sigma ADC for Wide Bandwidth Applications

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Product details

Parameters

Resolution (Bits) 24 Number of input channels 4 Sample rate (Max) (kSPS) 144 Interface type SPI Architecture Delta-Sigma Input type Differential Multi-channel configuration Simultaneous Sampling Rating Catalog Reference mode Ext Input range (Max) (V) 5.25 Input range (Min) (V) 0 Features Daisy-Chainable Operating temperature range (C) -40 to 125 Power consumption (Typ) (mW) 275 Analog voltage AVDD (Min) (V) 4.75 SNR (dB) 111 Analog voltage AVDD (Max) (V) 5.25 Digital supply (Min) (V) 1.65 Digital supply (Max) (V) 2.2 open-in-new Find other Precision ADCs (<=10MSPS)

Package | Pins | Size

HTQFP (PAP) 64 144 mm² 12 x 12 open-in-new Find other Precision ADCs (<=10MSPS)

Features

  • Simultaneously Measure Four/Eight Channels
  • Up to 144kSPS Data Rate
  • AC Performance:
    70kHz Bandwidth
    111dB SNR (High-Resolution Mode)
    –108dB THD
  • DC Accuracy:
    0.8µV/°C Offset Drift
    1.3ppm/°C Gain Drift
  • Selectable Operating Modes:
    High-Speed: 144kSPS, 106dB SNR
    High-Resolution: 52kSPS, 111dB SNR
    Low-Power: 52kSPS, 31mW/ch
    Low-Speed: 10kSPS, 7mW/ch
  • Linear Phase Digital Filter
  • SPI™ or Frame-Sync Serial Interface
  • Low Sampling Aperture Error
  • Modulator Output Option (digital filter bypass)
  • Analog Supply: 5V
  • Digital Core: 1.8V
  • I/O Supply: 1.8V to 3.3V
  • APPLICATIONS
    • Vibration/Modal Analysis
    • Multi-Channel Data Acquisition
    • Acoustics/Dynamic Strain Gauges
    • Pressure Sensors

    PowerPAD is a trademark of Texas Instruments, Inc.
    SPI is a trademark of Motorola, Inc.
    All other trademarks are the property of their respective owners.

    open-in-new Find other Precision ADCs (<=10MSPS)

    Description

    Based on the single-channel ADS1271, the ADS1274 (quad) and ADS1278 (octal) are 24-bit, delta-sigma (ΔΣ) analog-to-digital converters (ADCs) with data rates up to 144k samples per second (SPS), allowing simultaneous sampling of four or eight channels. The devices are offered in identical packages, permitting drop-in expandability.

    Traditionally, industrial delta-sigma ADCs offering good drift performance use digital filters with large passband droop. As a result, they have limited signal bandwidth and are mostly suited for dc measurements. High-resolution ADCs in audio applications offer larger usable bandwidths, but the offset and drift specifications are significantly weaker than respective industrial counterparts. The ADS1274 and ADS1278 combine these types of converters, allowing high-precision industrial measurement with excellent dc and ac specifications.

    The high-order, chopper-stabilized modulator achieves very low drift with low in-band noise. The onboard decimation filter suppresses modulator and signal out-of-band noise. These ADCs provide a usable signal bandwidth up to 90% of the Nyquist rate with less than 0.005dB of ripple.

    Four operating modes allow for optimization of speed, resolution, and power. All operations are controlled directly by pins; there are no registers to program. The devices are fully specified over the extended industrial range (–40°C to +105°C) and are available in an HTQFP-64 PowerPAD™ package.

    open-in-new Find other Precision ADCs (<=10MSPS)
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    Technical documentation

    = Featured
    No results found. Please clear your search and try again. View all 4
    Type Title Date
    * Datasheet Quad/Octal, Simultaneous Sampling, 24-Bit Analog-to-Digital Converters datasheet (Rev. F) Feb. 17, 2011
    Application notes Digital Filter Types in Delta-Sigma ADCs Jun. 27, 2017
    White papers Voltage-reference impact on total harmonic distortion Aug. 01, 2016
    White papers Best of Baker's Best: Precision Data Converters -- Delta-Sigma ADCs Mar. 19, 2015

    Design & development

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

    Hardware development

    EVALUATION BOARDS Download
    document-generic User guide
    Description

    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 (...)

    Features

    ADCPro software from Texas Instruments will simplify the tasks of collecting and analyzing ADC data, and ease evaluation. With it, you can easily set up an evaluation system that may not exactly replicate the manufacturer's system, but still arrive at meaningful results that can be compared to (...)

    GUIS FOR EVALUATION MODULES (EVM) Download
    document-generic User guide
    Description

    The ADS1274EVM-PDK is a complete evaluation/demonstration kit, which combines ADS1274EVM with the DSP-based MMB0 board as a motherboard. The mother board and the ADCPro™ evaluation software are supplied for use with a personal computer running Microsoft™ Windows XP or Windows 7 operating (...)

    Features
    • Easy-to-use evaluation software for Microsoft™ Windows XP and Windows 7
    • Built-in analysis tools including scope, FFT, and histogram displays
    • Data collection to text files
    • Complete control of board settings
    • Easily expandable with new analysis plug in tools from Texas Instruments

     

    Below are companion (...)

    Design tools & simulation

    SIMULATION TOOLS Download
    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
    CALCULATION TOOLS Download
    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 (...)
    CALCULATION TOOLS Download
    ADS1x7x Excel™ Calculator Tool
    ADS1X7X-EXCEL-CALC-TOOL
      The ADS1x7x Excel calculator tool provides the user with several easy-to-use tools to simplify the configuration of ADS1x7x devices. The tool helps the user understand different settings and operating modes that aid in optimizing a design with ADS1x7x wide-bandwidth analog-to-digital converters (...)
    Features
    • ADC code conversions
    • Digital filter plot
    • Daisy-chain configuration
    • SNR estimator
    CALCULATION TOOLS Download
    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 (...)
    Features
    • 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
    HTQFP (PAP) 64 View options

    Ordering & quality

    Support & training

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