National Semiconductor | High-performance Analog

 

 ADC122S655   

Dual 12-Bit, 200 kSPS to 500 kSPS, Simultaneous Sampling A/D Converter
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Features

  • True Simultaneous Sampling Differential Inputs
  • Guaranteed performance from 200 kSPS to 500 kSPS
  • External Reference
  • Wide Input Common-Mode Voltage Range
  • Single High-Speed Serial Data Output
  • Operating Temperature Range of −40°C to +105°C
  • SPI™/QSPI™/MICROWIRE™/DSP compatible Serial Interface
  • Description

    The ADC122S655 is a dual 12-bit, 200 kSPS to 500 kSPS simultaneous sampling Analog-to-Digital (A/D) converter. The analog inputs on both channels are sampled simultaneously to preserve their relative phase information to each other. The converter is based on a successive-approximation register architecture where the differential nature of the analog inputs is maintained from the internal track-and-hold circuits throughout the A/D converter to provide excellent common-mode signal rejection. The ADC122S655 features an external reference that can be varied from 1.0V to VA.

    The ADC122S655's serial data output is binary 2's complement and is compatible with several standards, such as SPI™, QSPI™, MICROWIRE™, and many common DSP serial interfaces. The serial clock (SCLK) and chip select bar ( ^CS) are shared by both channels.

    Operating from a single 5V analog supply and a reference voltage of 2.5V, the total power consumption while operating at 500 kSPS is typically 11 mW. With the ADC122S655 operating in power-down mode, the power consumption reduces to 3 µW. The differential input, low power consumption, and small size make the ADC122S655 ideal for direct connection to sensors in motor control applications.

    Operation is guaranteed over the industrial temperature range of −40°C to +105°C and clock rates of 6.4 MHz to 16 MHz. The ADC122S655 is available in a 10-lead MSOP package.

    Key Specification

    Conversion Rate

    200 kSPS to 500 kSPS

    INL

    ±1 LSB (max)

    DNL

    ±0.95 LSB (max)

    SNR

    71 dBc (min)

    THD

    -72 dBc (min)

    ENOB

    11.25 bits (min)

    Power Consumption at 500 kSPS

     Converting, VA = 5V, VREF = 2.5V

    11 mW (typ)

     Power-Down, VA = 5V, VREF = 2.5V

    3 µW (typ)


    Applications

  • Motor Control
  • Power Meters/Monitors
  • Multi-Axis Positioning Systems
  • Instrumentation and Control Systems
  • Data Acquisition Systems
  • Medical Instruments
  • Direct Sensor Interface


  • current transducer application

     

    ParametersValues
    Pin and Function Compatible Family 2 ch, MSOP-10
    Resolution 12 bits
    Input Channels 2
    Sample Rate Range (sps) 200k to 500k
    Interface Type SPI/QSPI/Microwire
    Differential Input Yes
    INL (LSB) ±1.0
    DNL (LSB) ± 0.95
    ENOB 11.25 bits
    SINAD 69.5 dB
    SNR 71 dB
    Max KSample Rate 500 ksps
    Min Supply Voltage 4.5 Volt
    Max Supply Voltage 5.5 Volt
    Reference Source External
    Temperature Min -40 deg C
    Temperature Max 105 deg C
    Power Down Yes
    Input Sample/Hold Yes
    Special Features dual simultaneous input
    Data Converter Type ADC
    Max Sample Rate 0.5 MSPS

    Datasheets
    TitleSizeDateOther
    Language
    ADC122S655 Dual 12-Bit, 200 kSPS to 500 kSPS, Simultaneous Sampling A/D Converter501
    Kbytes
    25-Feb-08   

    Part Number(s)
    (NSID)
    Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    ADC122S655CIMM/NOPB


    RoHS Status


    MINI SOIC
    Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    DIGI-KEYWorldwide1000
    FARNELLEurope and Asia59
    MOUSERWorldwide750
    NEWARKAmericas589
    $2.94 each at 1K+ pcsreel
    of
    1000
    ADC122S655CIMMX/NOPB


    RoHS Status


    MINI SOIC
    Full production
    Lead Time: 8 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $2.94 each at 1K+ pcsreel
    of
    3500

    All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

    Moisture Sensitivity Level Data for ADC122S655.

    A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

    National's certificate of product compliance for ADC122S655 is located at RoHS Status.

    Part Number(s)
    (NSID)
    DescriptionAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    ADC122S655EB/NOPB

    Dual 12-Bit, 200 kSPS to 500 kSPS, Simultaneous Sampling A/D ConverterFull production
    Lead Free (RoHS)

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $120.00 each1
    Description:

    The ADC122S655EB features a dual 12-bit, 200kSPS to 500kSPS simultaneous sampling Analog-to-Digital (A/D) converter. The ADC122S655EB can be used in manual or computer mode. In manual mode, a pattern generator or controller is used to interface with the ADC122S655. In order to interface this board to a PC, a WaveVision (WV) Data Capture Board, version 4.1 or higher, is required. The WV Data Capture Board requires WaveVision software version 4.4 or higher for the ADC122S655EB to be recognized automatically by the WV software.

    Features:
    • True Simultaneous Sampling Differential Inputs
    • Guaranteed performance from 200kSPS to 500kSPS
    • External Reference
    • Wide Input Common-Mode Voltage Range
    • Operating Temperature Range of -40&#;C to 105°C
    • Single High-Speed Serial Data Output
    • 10?Lead MSOP
    Eval Board Kit Contents:
    • Evaluation Board
    • Users Guide



    National Semiconductor follows the provisions of the Product Stewardship Guide for Customers (CSP-9-111C1) and Banned Substances and Materials of Interest Specification (CSP-9-111S2) for regulatory environmental compliance. Details may be found at: www.national.com/en/packaging/greennopb.html. Lead free products are RoHS compliant.

    Lead Free product status is available through the search tool located here

    Part Number(s)
    (NSID)
    Weight
    (milligrams)
    TypePinsMSL RatingPeak ReflowRoHS
    Status
    CAD SymbolsModelsPackage
    Marking
    Format
    ADC122S655CIMM/NOPB

    29.841
    MINI SOIC101260DetailDownloadN/A
    ZXTT
    X96C
    ADC122S655CIMMX/NOPB

    29.841
    30.002
    MINI SOIC101260DetailDownloadN/A
    ZXTT
    X96C

    All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

    Moisture Sensitivity Level Data for ADC122S655.

    A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

    National's certificate of product compliance for ADC122S655 is located at RoHS Status.

    CAD Symbols and Models
    Download ADC122S655 CAD Symbols
     Models
    N/A


    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    ADC122S655CIMMCMOS70213010015840003449464325
    ADC122S655CIMMXCMOS70213010015840003449464325

    Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

    For more information on Reliability Metrics, please click here.


    All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

    Moisture Sensitivity Level Data for ADC122S655.

    A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

    National's certificate of product compliance for ADC122S655 is located at RoHS Status.

    Motor Control Sensing in Factory Automation
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    Data Acquisition In Factory Automation
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    Factory Automation Overview
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    Motor Control Sensing in Factory Automation
    Date: 2009-08-04
    Length: 0:24:21
    Data Acquisition In Factory Automation
    Date: 2009-08-24
    Length: 0:31:29
    Factory Automation Overview
    Date: 2009-08-04
    Length: 0:32:30
    [Information as of 9-Feb-2012]