National Semiconductor | High-performance Analog

 

 ADC081C027   

I2C-Compatible, 8-Bit Analog-to-Digital Converter with Alert Function
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Features

  • I 2C-Compatible 2-wire Interface which supports standard (100kHz), fast (400kHz), and high speed (3.4MHz) modes
  • Extended power supply range (+2.7V to +5.5V)
  • Up to nine pin-selectable chip addresses (MSOP-8 only)
  • Out-of-range Alert Function
  • Automatic Power-down mode while not converting
  • Very small TSOT-6 and MSOP-8 packages
  • ±8kV HBM ESD protection (SDA, SCL)
  • Description

    The ADC081C021 is a low-power, monolithic, 8-bit, analog-to-digital converter (ADC) that operates from a +2.7 to 5.5V supply. The converter is based on a successive approximation register architecture with an internal track-and-hold circuit that can handle input frequencies up to 11MHz. The ADC081C021 operates from a single supply which also serves as the reference. The device features an I 2C-compatible serial interface that operates in all three speed modes, including high speed mode (3.4MHz).

    The ADC's Alert feature provides an interrupt that is activated when the analog input violates a programmable upper or lower limit value. The device features an automatic conversion mode, which frees up the controller and I 2C interface. In this mode, the ADC continuously monitors the analog input for an "out-of-range" condition and provides an interrupt if the measured voltage goes out-of-range.

    The ADC081C021 comes in two packages: a small TSOT-6 package with an alert output, and an MSOP-8 package with an alert output and two address selection inputs. The ADC081C027 comes in a small TSOT-6 package with an address selection input. The ADC081C027 provides three pin-selectable addresses while the MSOP-8 version of the ADC081C021 provides nine pin-selectable addresses. Pin-compatible alternatives to the TSOT-6 options are available with additional address options.

    Normal power consumption using a +3V or +5V supply is 0.26mW or 0.78mW, respectively. The automatic power-down feature reduces the power consumption to less than 1µW while not converting. Operation over the industrial temperature range of −40°C to +105°C is guaranteed. Their low power consumption and small packages make this family of ADCs an excellent choice for use in battery operated equipment.

    The ADC081C021 and ADC081C027 are part of a family of pin-compatible ADCs that also provide 10- and 12-bit resolution. For 10-bit ADCs see the ADC101C021 and ADC101C027. For 12-bit ADCs see the ADC121C021 and ADC121C027.

    Key Specification

    Resolution

    8 bits; no missing codes

    Conversion Time

    1µs (typ)

    INL & DNL

    ±0.2 LSB (max)

    Throughput Rate

    188.9ksps (max)

    Power Consumption (at 22ksps)

    3V Supply

    0.26 mW (typ)

    5V Supply

    0.78 mW (typ)


    Applications

  • System Monitoring
  • Peak Detection
  • Portable Instruments
  • Medical Instruments
  • Test Equipment


  • Typical Application Circuit

     

    ParametersValues
    Pin and Function Compatible Family 1 ch, SOT-6
    Resolution 8 bits
    Input Channels 1
    Sample Rate Range (sps) 5.5k - 189ksps
    Interface Type I2C
    Differential Input No
    INL (LSB) ± 0.2
    DNL (LSB) ± 0.2
    ENOB 7.8 bits
    SINAD 49.8 dB
    SNR 49.8 dB
    Max KSample Rate 189 ksps
    Min Supply Voltage 2.7 Volt
    Max Supply Voltage 5.5 Volt
    Reference Source Supply
    Temperature Min -40 deg C
    Temperature Max 105 deg C
    Power Down Yes
    Input Sample/Hold Yes
    Special Features Address pin
    Data Converter Type ADC
    Max Sample Rate 0.189 MSPS

    Datasheets
    TitleSizeDateOther
    Language
    ADC081C027 I2C-Compatible, 8-Bit Analog-to-Digital Converter with Alert Function790
    Kbytes
    5-Feb-09   

    Part Number(s)
    (NSID)
    Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    ADC081C027CIMK/NOPB


    RoHS Status


    TSOT
    Full production
    Lead Time: 8 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide1978
    AVNET-EMWorldwide7988
    DIGI-KEYWorldwide2931
    FARNELLEurope and Asia762
    MOUSERWorldwide928
    NEWARKAmericas311
    TAYLORAmericas1978
    $0.60 each at 1K+ pcsreel
    of
    1000
    ADC081C027CIMKX/NOPB


    RoHS Status


    TSOT
    Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    $0.60 each at 1K+ pcsreel
    of
    3000

    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 ADC081C027.

    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 ADC081C027 is located at RoHS Status.

    Part Number(s)
    (NSID)
    DescriptionAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    ADC081C02XEB/NOPB

    ADC081C02X Evaluation BoardFull production
    Lead Free (RoHS)

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    TAYLORAmericas1
    $120.00 each1

    Description:

    The ADC081C02XEB Design Kit is designed to ease evaluation and design-in of National Semiconductor`s ADC081C021/ADC081C027 family of 8-bit Analog-to-Digital Converters. The ADCs can operate at speeds up to 188.9 kSPS. The converter features an I2C interface and an Alert function. The LMP7731 Low-noise, Precision Operational Amplifier is included on the ADC081C02XEB for convenient buffering of the analog input. The ADC081C02XEB evaluation board may be used in the Stand Alone mode to capture data with a logic analyzer or third party equipment, or it may be used in the Computer Mode with a WaveVision 4 Data Capture Board (Rev4.1g or later).

    Features:

    • I2C-Compatible 2-wire Interface which supports standard (100kHz), fast (400kHz), and high speed (3.4MHz) modes
    • Extended power supply range (+2.7V to +5.5V)
    • Up to four pin-selectable chip addresses
    • Out-of-range Alert Function
    • Automatic Power-down mode while not converting
    • Very small 6-pin TSOT packages
    • ±8kV HBM ESD protection (SDA, SCL)

    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
    ADC081C027CIMK/NOPB

    13.726
    TSOT61260DetailDownloadN/A
    X35C
    XTT
    ADC081C027CIMKX/NOPB

    13.726
    TSOT61260DetailDownloadN/A
    X35C
    XTT

    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 ADC081C027.

    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 ADC081C027 is located at RoHS Status.

    CAD Symbols and Models
    Download ADC081C027 CAD Symbols
     Models
    N/A


    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    ADC081C027CIMKCMOS70213010015840003449464325
    ADC081C027CIMKXCMOS70213010015840003449464325

    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 ADC081C027.

    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 ADC081C027 is located at RoHS Status.

    Data Acquisition In Factory Automation
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    Factory Automation Overview
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    Sensing Solutions In Factory Automation
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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
    Sensing Solutions In Factory Automation
    Date: 2009-07-10
    Length: 0:50:00
    [Information as of 9-Feb-2012]