AD7674:  18-Bit, 2.5 LSB INL, 800 kSPS SAR ADC

The AD7674 is an 18-bit, 800 kSPS, charge redistribution SAR, fully differential analog-to-digital converter that operates on a single 5 V power supply. The part contains a high speed 18-bit sampling ...More

AD7674:  18-Bit, 2.5 LSB INL, 800 kSPS SAR ADC

Product Description

The AD7674 is an 18-bit, 800 kSPS, charge redistribution SAR, fully differential analog-to-digital converter that operates on a single 5 V power supply. The part contains a high speed 18-bit sampling ADC, an internal conversion clock, an internal reference buffer, error correction circuits, and both serial and parallel system interface ports.

The part is available in 48-lead LQFP or 48-lead LFCSP packages with operation specified from –40°C to +85°C.


Applications
  • CT scanners
  • High dynamic data acquisition
  • Geophone and hydrophone sensors
  • Σ-Δ replacement (low power, multichannel)
  • Instrumentation
  • Spectrum analysis
  • Medical instruments

    • Features

    • 18 Bits Resolution with No Missing Codes
    • No Pipeline Delay ( SAR architecture )
    • Differential input range: ±VREF (VREF up to 5 V)
    • Throughput:
      800 kSPS (Warp Mode)
      666 kSPS (Normal Mode)
      500 kSPS (Impulse Mode)
    • INL: ±2.5 LSB Max (±9.5 ppm of Full-Scale)
    • Dynamic range : 103 dB typ (VREF = 5 V)
    • S/(N+D): 100 dB typ @ 2 kHz (VREF = 5 V)
    • Parallel (18-,16-, or 8-bit bus) and serial 5 V/3 V interface
    • SPI®/QSPI™/MICROWIRE™/DSP compatible
    • On-board reference buffer
    • Single 5 V supply operation
    • See data sheet for additional features

    Diagrams

    AD7674 Diagram
    Functional Block Diagram for AD7674

    Specifications

    Resolution (Bits) 18bit
    T-Put Rate 800kSPS
    # Chan 1
    Supply V Single(+5)
    Pwr Diss 138mW
    Interface Byte,Par,Ser,SPI
    Ain Range (2Vref) p-p
    SNR (dB) 101dB
    Pkg Type CSP,QFP

    AD7780 - 24-Bit Pin-Programmable Low Power Σ−Δ ADC

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    AD7192 - 4.8 kHz Ultra-Low Noise 24-Bit Sigma-Delta ADC with PGA

    AD7357 - Differential Input, Dual, Simultaneous Sampling, 4.25 MSPS, 14-Bit, SAR ADC

    Subscribe to New Products Feed More
    Part# Bits Throughput Rate # of Inputs Operating Pwr Diss
    AD7641 18 2MSPS 1 92mW
    AD7643 18 1.25MSPS 1 80mW
    AD7674 18 800KSPS 1 138mW
    AD7984 18 1.33MSPS 1 14mW
    AD7982 18 1MSPS 1 8.6mW
    AD7621 16 3MSPS 1 86mW
    AD7622 16 2MSPS 1 85mW
    AD7623 16 1.33MSPS 1 55mW
    AD7980 16 1MSPS 1 10mW
    AD7671 16 1MSPS 1 125mW
    AD7677 16 1MSPS 1 130mW
    Pricing, Packaging & Availability

    Help

    Model
    The model number is a specific version of a generic that can be purchased or sampled.

    Status
    Status indicates the current lifecycle of the product. This can be one of 4 stages:
    • Pre-Release: The model has not been released to general production, but samples may be available.
    • Production: The model is currently being produced, and generally available for purchase and sampling.
    • Last Time Buy: The model has been scheduled for obsolescence, but may still be purchased for a limited time.
    • Obsolete: The specific part is obsolete and no longer available. Other models listed in the table may still be available (if they have a status that is not obsolete).
    Package Description
    The package for this IC (i.e. DIP, SOIC, BGA). An Evaluation Board is a board engineered to show the performance of the model, the part is included on the board.

    For detailed drawings and chemical composition please consult our  Package Site

    Pin Count
    Pin Count is the number of pins, balls, or pads on the device. Pin-out diagrams & pin function descriptions may be found in the datasheet.

    Temperature Range
    This is the acceptable operating range of the device. The various ranges specified are as follows:
    • Commercial: 0 to +70 degrees Celsius
    • Military : -55 to +125 degrees Celsius
    • Industrial: Temperature ranges may vary by model. Please consult the datasheet for more information.
    • Automotive: -40 to +125 degrees Celsius
    Price
    The USA 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. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

    Production Availability
    This is the date Analog Devices, Inc. anticipates that the product will ship from the warehouse. Most orders ship within 48 hours of this date.Once an order has been placed, Analog Devices, Inc. will send an Order Acknowledgement email to confirm your delivery date. It is important to note the scheduled dock date on the order entry screen. We do take orders for items that are not in stock, so delivery may be scheduled at a future date. Also, please note the warehouse location for the product ordered. We have warehouses in the United States, Europe and Southeast Asia. Transit times from these sites may vary.
    Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.

    RoHS Compliant
    Due to environmental concerns, ADI offers many of our products in lead-free versions. For more information about lead-free parts, please consult our Pb (Lead) free information page.

    *The USA 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. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
    **Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.

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