National Semiconductor | High-performance Analog

 

 DAC122S085   

12-Bit Micro Power DUAL Digital-to-Analog Converter with Rail-to-Rail Output from the PowerWise® Family
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Features

  • Guaranteed Monotonicity
  • Low Power Operation
  • Rail-to-Rail Voltage Output
  • Power-on Reset to 0V
  • Simultaneous Output Updating
  • Wide power supply range (+2.7V to +5.5V)
  • Industry's Smallest Package
  • Power Down Modes
  • Description

    The DAC122S085 is a full-featured, general purpose DUAL 12-bit voltage-output digital-to-analog converter (DAC) that can operate from a single +2.7V to 5.5V supply and consumes 0.6 mW at 3V and 1.6 mW at 5V. The DAC122S085 is packaged in 10-lead LLP and MSOP packages. The 10-lead LLP package makes the DAC122S085 the smallest DUAL DAC in its class. The on-chip output amplifier allows rail-to-rail output swing and the three wire serial interface operates at clock rates up to 40 MHz over the entire supply voltage range. Competitive devices are limited to 25 MHz clock rates at supply voltages in the 2.7V to 3.6V range. The serial interface is compatible with standard SPI, QSPI, MICROWIRE and DSP interfaces.

    The reference for the DAC122S085 serves all four channels and can vary in voltage between 1V and VA, providing the widest possible output dynamic range. The DAC122S085 has a 16-bit input shift register that controls the outputs to be updated, the mode of operation, the powerdown condition, and the binary input data. Both outputs can be updated simultaneously or individually depending on the setting of the two mode of operation bits.

    A power-on reset circuit ensures that the DAC output powers up to zero volts and remains there until there is a valid write to the device. A power-down feature reduces power consumption to less than a microWatt with three different termination options.

    The low power consumption and small packages of the DAC122S085 make it an excellent choice for use in battery operated equipment.

    The DAC122S085 is one of a family of pin compatible DACs, including the 8-bit DAC082S085 and the 10-bit DAC102S085. The DAC122S085 operates over the extended industrial temperature range of −40°C to +105°C.

    Key Specification

    Resolution

    12 bits

    INL

    ±8 LSB (max)

    DNL

    +0.7 / −0.5 LSB (max)

    Settling Time

    8.5 µs (max)

    Zero Code Error

    +15 mV (max)

    Full-Scale Error

    −0.75 %FS (max)

    Supply Power

    Normal

    0.6 mW (3V) / 1.6 mW (5V) typ

    Power Down

    0.3 µW (3V) / 0.8 µW (5V) typ


    Applications

  • Battery-Powered Instruments
  • Digital Gain and Offset Adjustment
  • Programmable Voltage & Current Sources
  • Programmable Attenuators
  • Also Recommended
    DAC082S085For 8 Bits
    DAC102S085For 10 Bits
    DAC121S101For 12 Bit 1 Channel
    DAC124S085For 12 Bit 4 Channel
    DAC128S085For 12 Bit 8 Channel



    Typical Application
    *click for larger image


    Block Diagram
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    Typical Performance
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    Parameters / ValuesDAC122S085 DAC082S085 DAC102S085 DAC121S101 DAC124S085 DAC128S085
    Resolution12 bits 8 bits 10 bits 12 bits 12 bits 12 bits
    Pin and Function Compatible Family2/4 ch, LLP-10, 2/4 ch, MSOP-10 2/4 ch, LLP-10, 2/4 ch, MSOP-10 2/4 ch, LLP-10, 2/4 ch, MSOP-10 1 ch, SOT-6 2/4 ch, LLP-10, 2/4 ch, MSOP-10 None
    Channels2 Channels 2 Channels 2 Channels 1 Channels 4 Channels 8 Channels
    Interface TypeSPI/Microwire SPI/Microwire SPI/Microwire Serial SPI/Microwire SPI/QSPI/Microwire
    Settling Time8500 ns 4500 ns 6000 ns 8000 ns 8500 ns 8000 ns
    INL (LSB)+/-2.4 +/-0.14 +/-0.7 +/-2.6 +/-2.4 +/-8
    DNL (LSB)+2.0, -0.15 +0.04, -0.02 +0.08, -0.03 +0.25, -0.1 +2.0, -0.15 +0.75, -0.4
    Power Down, typ. at 3.6V0.3 uW 0.3 uW 0.3 uW 0.14 uW 0.3 uW 0.3 uW
    Oper Pwr typ, 3.6V, 30/0.4MHz SPI/I2C0.6 mW 0.6 mW 0.6 mW 0.64 mW 1.1 mW 1.95 mW
    PowerWise Rating 12.99 pJ/conv 1.48 pJ/conv 2.46 pJ/conv 6.5 pJ/conv 2.74 pJ/conv 7.62 pJ/conv
    Reference SourceExternal External External Supply External External
    Max Supply Voltage5.5 Volt 5.5 Volt 5.5 Volt 5.5 Volt 5.5 Volt 5.5 Volt
    Min Supply Voltage2.7 Volt 2.7 Volt 2.7 Volt 2.7 Volt 2.7 Volt 2.7 Volt
    Temperature Min-40 deg C -40 deg C -40 deg C -40 deg C -40 deg C -40 deg C
    Temperature Max105 deg C 105 deg C 105 deg C 125, 105 deg C 105 deg C 125 deg C
    OtherSupply Voltage4.5V to 5.5V 4.5V to 5.5V 4.5V to 30V 4.5V to 5.5V 4.5V to 5.5V Undefined
    Tsettling Conditionscode change 400h to C00h code change 40h to C0h code change 100h to 300h code change 400h to C00h code change from 100h to 300h 5.5V
    Data Converter TypeDAC DAC DAC DAC DAC DAC
    AutomotiveYes Yes Yes Yes Yes Yes
    PowerWiseYes Yes Yes Yes Yes Yes

    Datasheets
    TitleSizeDateOther
    Language
    DAC122S085 12-Bit Micro Power DUAL Digital-to-Analog Converter with Rail-to-Rail Output428
    Kbytes
    20-Nov-08   


    Application Notes
    TitleSizeDateOther
    Language
    AN-2001: Application Note 2001 Daisy Chaining Precision DACs141
    Kbytes
    25-Sep-09 


    Other Technical Documents
    TitleTypeDate
    Optimizing Portable Applications with D/A ConvertersTechnology Edge 2006-09-01
    Bridging the Divide: A DAC Applications Tutorial (Precision Signal Path)Signal Path Designer 2010-09-23
    Bridging the Divide: Designing with DACs (Part 3)External Article 2010-07-06

    Part Number(s)
    (NSID)
    Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    DAC122S085CIMM/NOPB

    DAC122S085CIMM

    RoHS Status


    MINI SOIC
    Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide1000
    AVNET-EMWorldwide1899
    DIGI-KEYWorldwide912
    FARNELLEurope and Asia19
    MOUSERWorldwide990
    NEWARKAmericas19
    RS COMPONENTSWorldwide820
    TAYLORAmericas1000
    $1.85 each at 1K+ pcsreel
    of
    1000
    DAC122S085CIMMX/NOPB

    DAC122S085CIMMX

    RoHS Status


    MINI SOIC
    Full production
    Lead Time: 8 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $1.85 each at 1K+ pcsreel
    of
    3500
    DAC122S085CISD/NOPB

    DAC122S085CISD

    RoHS Status


    LLP
    Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide1000
    DIGI-KEYWorldwide2000
    MOUSERWorldwide875
    TAYLORAmericas1000
    $1.85 each at 1K+ pcsreel
    of
    1000
    DAC122S085CISDX/NOPB

    DAC122S085CISDX

    RoHS Status


    LLP
    Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $1.85 each at 1K+ pcsreel
    of
    4500

    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 DAC122S085.

    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 DAC122S085 is located at RoHS Status.

    Part Number(s)
    (NSID)
    DescriptionAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    DAC122S085EB/NOPB

    12-Bit Micro Power DUAL Digital-to-Analog Converter with Rail-to-Rail OutputFull production
    Lead Free (RoHS)

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    TAYLORAmericas3
    $120.00 each1

    Description:

    This Design Kit (consisting of an Evaluation Board and this manual) is designed to ease evaluation and design-in of National Semiconductor's DAC122S085 12-bit Digital-to-Analog Converter.

    The DAC122S085 features a voltage output with an SPI interface that operates at clock rates up to 40 MHz. The supply voltage can range from +2.7V to +5.5V and consumes just 0.6mW at 3V and 1.6mW at 5V. A power-down feature reduces the power consumption to 0.3 uW at 3V and 0.8 uW at 5V. The reference voltage for the DAC122S085 serves all channels and can vary in voltage between 1.0V and VA.

    Features:

    • Board comes fully assembled and tested
    • Choice of board mounted or external reference
    • Jumper-selectable load conditions
    • Operates from a single (+5V) supply voltage
    • Convenient 14-pin header for easy digital programming

    Contents:

    • Evaluation Board
    • Evaluation Board User's Guide
    • DAC122S085 Data Sheet



    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
    DAC122S085CIMM/NOPB

    DAC122S085CIMM
    29.841
    30.002
    MINI SOIC101
    1
    260
    260
    DetailDownloadN/A
    ZXTT
    X72C
    DAC122S085CIMMX/NOPB

    DAC122S085CIMMX
    29.841
    30.002
    MINI SOIC101
    1
    260
    260
    DetailDownloadN/A
    ZXTT
    X72C
    DAC122S085CISD/NOPB

    DAC122S085CISD
    21.112
    21.182
    LLP101
    1
    260
    260
    DetailDownloadN/A
    ZXYTT
    X73C
    DAC122S085CISDX/NOPB

    DAC122S085CISDX
    21.112
    21.182
    LLP101
    1
    260
    260
    DetailDownloadN/A
    ZXYTT
    X73C

    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 DAC122S085.

    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 DAC122S085 is located at RoHS Status.

    CAD Symbols and Models
    Download DAC122S085 CAD Symbols
     Models
    N/A


    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    DAC122S085CIMMCMOS70213010015840003449464325
    DAC122S085CIMMXCMOS70213010015840003449464325
    DAC122S085CISDCMOS70213010015840003449464325
    DAC122S085CISDXCMOS70213010015840003449464325

    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 DAC122S085.

    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 DAC122S085 is located at RoHS Status.

    Data Acquisition In Factory Automation
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    Factory Automation Overview
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    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]