1. Products
  2. A/D Converters (ADC)
  3. Precision A/D Converters
  4. Single Channel A/D Converters
  5. LTC2508-32

Data Sheet
JP
User Guides
1 View All
Evaluation Code
1 View All

Overview

Features and Benefits

  • ±0.5ppm INL (Typ)
  • 145dB Dynamic Range (Typ) at 61sps
  • 131dB Dynamic Range (Typ) at 4ksps
  • Guaranteed 32-Bits No Missing Codes
  • Configurable Digital Filter with Synchronization
    • Relaxed Anti-Aliasing Filter Requirements
  • Dual Output 32-Bit SAR ADC
    • 32-Bit Digitally Filtered Low Noise Output
    • 14-Bit Differential + 8-Bit Common Mode 1Msps No Latency Output
  • Wide Input Common-Mode Range
  • Guaranteed Operation to 85°C
  • 1.8V to 5V SPI-Compatible Serial I/O
  • Low Power: 24mW at 1Msps
  • 24-Lead 7mm × 4mm DFN Package

Product Details

The LTC2508-32 is a low noise, low power, high-performance 32-bit ADC with an integrated configurable digital filter. Operating from a single 2.5V supply, the LTC2508-32 features a fully differential input range up to ±VREF , with VREF ranging from 2.5V to 5.1V. The LTC2508-32 supports a wide common mode range from 0V to VREF simplifying analog signal conditioning requirements.

The LTC2508-32 simultaneously provides two output codes: (1) a 32-bit digitally filtered high precision low noise code, and (2) a 22-bit no latency composite code. The configurable digital filter reduces measurement noise by lowpass filtering and down-sampling the stream of data from the SAR ADC core, giving the 32-bit filtered output code. The 22-bit composite code consists of a 14-bit code representing the differential voltage and an 8-bit code representing the common mode voltage. The 22-bit composite code is available each conversion cycle, with no cycle of latency.

The digital filter can be easily configured for 4 different down-sampling factors by pin strapping. The configurations provide a dynamic range of 131dB at 3.9ksps and 145dB at 61sps. The digital lowpass filter relaxes the requirements for analog anti-aliasing. Multiple LTC2508-32 devices can be easily synchronized using the SYNC pin.

Applications

  • Seismology
  • Energy Exploration
  • Automated Test Equipment (ATE)
  • High-Accuracy Instrumentation

Product Categories

Markets and Technologies

Comparable Parts Click to see all in Parametric Search

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (1)

Documentation & Resources

  • View All (8)
  • Data Sheets (1)
  • Reliability Data (1)
  • User Guides (1)
  • Design Notes (1)
  • Product Selector Card (1)
  • Press Releases (1)
  • Technical Articles (2)
    • Document Type

    Software & Systems Requirements

    Evaluation Code

    ZIP
    201.00K

    FPGA cource code for DC2222A-B

    Evaluation Software

    LinearLab Tools
    A collection of Matlab and Python programs that provide direct access to Linear Technology’s data converter evaluation boards.

    Tools & Simulations

    Linduino

    Linduino is Analog Devices’ Arduino compatible system for developing and distributing firmware libraries and example code for our integrated circuits. Each Linduino-supported product includes an example main program, defined in the LTSketchbook/Part Number folder and driver code, defined in the LTSketchbook/libraries folder.

    Linduino code repository on GitHub and instructions on how to use the code.

    Purchase Linduino

    Linduino

    Code Files

    LTC2508 - Linduino DC2222AB.ino File
    LTC2508 - Linduino Header File
    LTC2508 - Linduino CPP File

    Precision ADC Driver Tool

    The Precision ADC Driver Tool is a web application that simulates the performance of precision ADC and driver combinations. Potential issues with driver selection, kickback settling, and distortion are flagged, and design tradeoffs can be quickly evaluated. Simulations and calculations include system noise, distortion, and settling of the ADC input

    Precision ADC Driver Tool

    Software and Simulation

    Product Recommendations

    LTC2508-32 Companion Parts

    Recommended ADC Drivers

    Recommended External Voltage References

    Recommended Related Parts

    Design Resources

    ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.

    Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
    LTC2508CDKD-32#PBF Material Declaration Reliability Data 24-Lead DFN (7mm x 4mm w/ EP)
    LTC2508CDKD-32#TRPBF Material Declaration Reliability Data 24-Lead DFN (7mm x 4mm w/ EP)
    LTC2508IDKD-32#PBF Material Declaration Reliability Data 24-Lead DFN (7mm x 4mm w/ EP)
    LTC2508IDKD-32#TRPBF Material Declaration Reliability Data 24-Lead DFN (7mm x 4mm w/ EP)
    Wafer Fabrication Data R549 Reliability Data

    Support & Discussions

    LTC2508-32 Discussions

    Cannot load COM Module
    Seismic data acquisition using LTC2508-32 and Arduino IOT microcontroller modules . I need pin diagram interface, and software to read ,display and save data.
    Data Collection Timeout Problem using DC2222A with PScope
    All LTC2508-32 Discussions
    LTC2508-32 Contact ADI Technical Support »
    LTC2508-32 Ask your question »
    LTC2508-32 Contact ADI Technical Support » LTC2508-32 Ask your question »

    Sample & Buy


    Ordering FAQs


    See our Ordering FAQs for answers to questions about online orders, payment options and more.

     

    Buy Now Pricing


    (**) Displayed Buy Now Price and Price Range is based on small quantity orders.

     

    List Pricing


    (*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

     

    Lead Times


    Please see the latest communication from our CCO regarding lead times.

     

    Sampling


    Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.


    Price Table Help

     

    Evaluation Boards

    Pricing displayed is based on 1-piece.

    Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.

    Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

    •