National Semiconductor | High-performance Analog

 

 ADC122S021   

2 Channel, 50 ksps to 200 ksps 12-Bit A/D Converter from the PowerWise® Family
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Features

  • Specified over a range of sample rates.
  • Two input channels
  • Variable power management
  • Single power supply with 2.7V - 5.25V range
  • Description

    The ADC122S021 is a low-power, two-channel CMOS 12-bit analog-to-digital converter with a high-speed serial interface. Unlike the conventional practice of specifying performance at a single sample rate only, the ADC122S021 is fully specified over a sample rate range of 50 ksps to 200 ksps. The converter is based on a successive-approximation register architecture with an internal track-and-hold circuit. It can be configured to accept one or two input signals at inputs IN1 and IN2.

    The output serial data is straight binary, and is compatible with several standards, such as SPI™, QSPI™, MICROWIRE, and many common DSP serial interfaces.

    The ADC122S021 operates with a single supply that can range from +2.7V to +5.25V. Normal power consumption using a +3V or +5V supply is 2.2 mW and 7.9 mW, respectively. The power-down feature reduces the power consumption to just 0.14 µW using a +3V supply, or 0.32 µW using a +5V supply.

    The ADC122S021 is packaged in an 8-lead MSOP package. Operation over the industrial temperature range of −40°C to +85°C is guaranteed.

    Key Specification

    DNL

    +0.4 / −0.2 LSB (typ)

    INL

    ± 0.35 LSB (typ)

    SNR

    72.0 dB (typ)

    Power Consumption

    3V Supply

    2.2 mW (typ)

    5V Supply

    7.9 mW (typ)


    Applications

  • Portable Systems
  • Remote Data Acquisition
  • Instrumentation and Control Systems
  • Also Recommended
    ADC082S021For 8 Bits
    ADC102S021For 10 Bits
    ADC122S051For Speeds From 200Ksps To 500Ksps
    ADC122S101For Speeds From 500Ksps To 1Msps



    Typical Application
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    Block Diagram
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    Typical Performance
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    Parameters / ValuesADC122S021 ADC082S021 ADC102S021 ADC122S051 ADC122S101
    Pin and Function Compatible Family2 ch, MSOP-8 2 ch, MSOP-8 2 ch, MSOP-8 2 ch, MSOP-8 2 ch, MSOP-8
    Resolution12 bits 8 bits 10 bits 12 bits 12 bits
    Input Channels2 2 2 2 2
    Sample Rate Range (sps)50k to 200k 50k to 200k 50k to 200k 200k to 500k 500k to 1M
    Interface TypeSPI / QSPI / Microwire SPI / QSPI / Microwire SPI / QSPI / Microwire SPI / QSPI / Microwire SPI / QSPI / Microwire
    Differential InputNo No No No No
    Power Down, typ. at 3.6V0.14 uW 0.72 uW 0.12 uW 0.14 uW 0.14 uW
    Operating Power, typ at 3.6V, max ksps0.018 mW 0.016 mW 0.013 mW 0.009 mW 0.006 mW
    Operating Power, 3.6V, 1ksps, max. PwrDn2.2 mW 1.6 mW 1.9 mW 3.0 mW 4.3 mW
    PowerWise Rating 11.65 pJ/conv 16.75 pJ/conv 5.08 pJ/conv 0.9 pJ/conv 0.65 pJ/conv
    INL (LSB)+/-0.35 +/-0.04 +/-0.13 +/-0.5 +/-0.64
    DNL (LSB)+0.4; -0.2 +/-0.04 +/-0.13 +0.7; -0.4 +0.9; -0.6
    ENOB11.7 bits 7.9 bits 9.9 bits 11.7 bits 11.7 bits
    SINAD72 dB 49.6 dB 61.8 dB 72 dB 72 dB
    SNR72 dB 49.6 dB 61.8 dB 72.5 dB 72.4 dB
    Max KSample Rate200 ksps 200 ksps 200 ksps 500 ksps 1000 ksps
    Min Supply Voltage2.7 Volt 2.7 Volt 2.7 Volt 2.7 Volt 2.7 Volt
    Max Supply Voltage5.25 Volt 5.25 Volt 5.25 Volt 5.25 Volt 5.25 Volt
    Reference SourceSupply Supply Supply Supply Supply
    Temperature Min-40 deg C -40 deg C -40 deg C -40 deg C -40 deg C
    Temperature Max85 deg C 85 deg C 85 deg C 85 deg C 85 deg C
    Power DownYes Yes Yes Yes Yes
    Input Sample/HoldYes Yes Yes Yes Yes
    Special FeaturesUndefined Undefined Undefined Undefined Undefined
    Data Converter TypeADC ADC ADC ADC ADC
    Max Sample Rate0.2 MSPS 0.2 MSPS 0.2 MSPS 0.5 MSPS 1 MSPS
    AutomotiveYes Yes Yes
    PowerWiseYes Yes Yes Yes Yes

    Datasheets
    TitleSizeDateOther
    Language
    ADC122S021 2 Channel, 50 ksps to 200 ksps 12-Bit A/D Converter451
    Kbytes
    30-Jan-10日本語  


    Other Technical Documents
    TitleTypeDate
    Thermopiles Raise Heat on Gas DetectionExternal Article 2008-06-12

    Part Number(s)
    (NSID)
    Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    ADC122S021CIMM/NOPB

    ADC122S021CIMM

    RoHS Status


    MINI SOIC
    Full production
    Lead Time: 8 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide950
    AVNET-EMWorldwide1000
    DIGI-KEYWorldwide1446
    FARNELLEurope and Asia1135
    MOUSERWorldwide629
    NEWARKAmericas773
    RS COMPONENTSWorldwide980
    TAYLORAmericas950
    $1.45 each at 1K+ pcsreel
    of
    1000
    ADC122S021CIMMX/NOPB

    ADC122S021CIMMX

    RoHS Status


    MINI SOIC
    Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $1.45 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 ADC122S021.

    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 ADC122S021 is located at RoHS Status.

    Part Number(s)
    (NSID)
    DescriptionAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    ADC122S021EVAL
    2 Channel, 200 KSPS 12-Bit A/D ConverterFull production


     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $120.00 each1

    Description:

    The ADC122S021 is a 2.2 mW, CMOS 12-bit, 200 KSPS Analog-to-Digital converter offered in a 8-lead SOT-23 package.

    This ADC Design Kit, consisting of one ADC122S021 evaluation board and WaveVision4 hardware, is designed to ease the evaluation and design-in of these National Semiconductor Analog-to-Digital Converters. These evaluation boards allow the designer to evaluate product performance in a choice of two ways: in standalone mode with a logic analyzer and appropriate software (including National`s WaveVision software), or with a personal computer and WaveVision4 hardware and software.

    Features:

    • Specified over a range of sample rates.
    • Two input channels
    • Variable power management
    • Single power supply with 2.7V - 5.25V range

    Contents:




    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
    ADC122S021CIMM/NOPB

    ADC122S021CIMM
    29.851
    30.002
    MINI SOIC81
    1
    260
    260
    DetailDownloadN/A
    ZXTT
    X18C
    ADC122S021CIMMX/NOPB

    ADC122S021CIMMX
    29.851
    30.002
    MINI SOIC81
    1
    260
    260
    DetailDownloadN/A
    ZXTT
    X18C

    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 ADC122S021.

    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 ADC122S021 is located at RoHS Status.

    Design Tools
    TitleSizeDate
    Evaluation Boards & Development Systems  

    CAD Symbols and Models
    Download ADC122S021 CAD Symbols
     Models
    N/A


    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    ADC122S021CIMMCMOS70213010015840003449464325
    ADC122S021CIMMXCMOS70213010015840003449464325

    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 ADC122S021.

    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 ADC122S021 is located at RoHS Status.

    Data Acquisition In Factory Automation
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    Data Acquisition In Factory Automation
    Date: 2009-08-24
    Length: 0:31:29
    [Information as of 9-Feb-2012]