National Semiconductor | High-performance Analog

 

 ADC0820   
8-Bit High Speed µP Compatible A/D Converter with Track/Hold Function 		Click link to Download

Features
  • Built-in track-and-hold function
  • No missing codes
  • No external clocking
  • Single supply-5 VDC
  • Easy interface to all microprocessors, or operates stand-alone
  • Latched TRI-STATE output
  • Logic inputs and outputs meet both MOS and T2L voltage level specifications
  • Operates ratiometrically or with any reference value equal to or less than VCC
  • 0V to 5V analog input voltage range with single 5V supply
  • No zero or full-scale adjust required
  • Overflow output available for cascading
  • 0.3" standard width 20-pin DIP
  • 20-pin molded chip carrier package
  • 20-pin small outline package
  • 20-pin shrink small outline package (SSOP)

    • Description

    By using a half-flash conversion technique, the 8-bit ADC0820 CMOS A/D offers a 1.5 µs conversion time and dissipates only 75 mW of power. The half-flash technique consists of 32 comparators, a most significant 4-bit ADC and a least significant 4-bit ADC.

    The input to the ADC0820 is tracked and held by the input sampling circuitry eliminating the need for an external sample-and-hold for signals moving at less than 100 mV/µs.

    For ease of interface to microprocessors, the ADC0820 has been designed to appear as a memory location or I/O port without the need for external interfacing logic.

    Key Specification
    Resolution8 Bits
    Conversion Time2.5 µs Max (RD Mode)
     1.5 µs Max (WR-RD Mode)
    Low Power75 mW Max
    Total Unadjusted Error±½ LSB and ± 1 LSB

    Also Recommended
    ADC088S022▲Sample Rate Up To 200 KSPS
    ADC088S052▲Sample Rate Up To 500 KSPS
    ADC088S102▲Sample Rate Up To 1 MSPS



    Typical Application
    click for larger image


    		Block Diagram
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    Typical Performance
    click for larger image


    Parameters / ValuesADC0820 ADC088S022 ADC088S052 ADC088S102
    Resolution8 bits 8 bits 8 bits 8 bits
    Input Channels1 8 8 8
    Interface TypeParallel SPI / QSPI / Microwire SPI / QSPI / Microwire SPI / QSPI / Microwire
    Differential InputNo No No No
    Max KSample Rate667 ksps 200 ksps 500 ksps 1000 ksps
    Min Supply Voltage4.5 Volt 2.7 Volt 2.7 Volt 2.7 Volt
    Max Supply Voltage8 Volt 5.25 Volt 5.25 Volt 5.25 Volt
    Reference SourceExternal Supply Supply Supply
    Temperature Min-40 deg C -40 deg C -40 deg C -40 deg C
    Temperature Max85 deg C 105 deg C 105 deg C 105 deg C
    Power DownNo Yes Yes Yes
    Input Sample/HoldYes Yes Yes Yes
    Special FeaturesTotal unadjusted error is +/-0.5 LSB Undefined Undefined Undefined
    Data Converter TypeADC ADC ADC ADC
    Max Sample Rate0.667 MSPS 0.2 MSPS 0.5 MSPS 1 MSPS

    Datasheets
    TitleSizeDateOther
    Language
    ADC0820 8-Bit High Speed µP Compatible A/D Converter with Track/Hold Function540
    Kbytes    		30-Mar-04日本語  

    Part Number(s)
    (NSID)    		Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    ADC0820BCWMX/NOPB

    ADC0820BCWMX

    RoHS Status

    SOIC WIDE    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    MOUSERWorldwide999
    RSL MICROAsia Pacific3000
    		$2.93 each at 1K+ pcsreel
    of
    1000
    ADC0820CCN/NOPB

    ADC0820CCN

    RoHS Status

    MDIP    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    ARROWWorldwide198
    AVNET-EMWorldwide287
    DIGI-KEYWorldwide221
    FARNELLEurope and Asia54
    MOUSERWorldwide31
    NEWARKAmericas184
    TAYLORAmericas198
    		$1.73 each at 1K+ pcsrail
    of
    18
    ADC0820CCWM/NOPB

    ADC0820CCWM

    RoHS Status

    SOIC WIDE    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide319
    AVNET-EMWorldwide406
    DIGI-KEYWorldwide234
    FARNELLEurope and Asia51
    MOUSERWorldwide282
    NEWARKAmericas93
    RS COMPONENTSWorldwide62
    TAYLORAmericas2398
    		$1.48 each at 1K+ pcsrail
    of
    36
    ADC0820CCWMX/NOPB

    ADC0820CCWMX

    RoHS Status

    SOIC WIDE    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    MOUSERWorldwide996
    TECHMOSAAsia Pacific9000
    		$1.48 each at 1K+ pcsreel
    of
    1000

    Obsolete Versions
    Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
    ADC0820BCN
    		NONE
    		NONE
    		03 Jun 2003
    ADC0820BCV
    		ADC0820
    		TEXAS INSTRUMENTS
    		25 Oct 2005
    ADC0820BCVX
    		LTC1099
    		LINEAR TECHNOLOGY
    		25 Oct 2005
    ADC0820BCWM
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    ADC0820CCMSA
    		NONE
    		NONE
    		08 Sep 1998
    ADC0820CCMSAX
    		NONE
    		NONE
    		08 Sep 1998
    ADC0820CCV
    		NONE
    		NONE
    		08 Dec 1998
    ADC0820CIWM
    		NONE
    		NONE
    		08 Sep 1998
    ADC0820CIWMX
    		NONE
    		NONE
    		08 Sep 1998

    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 ADC0820.

    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 ADC0820 is located at RoHS Status.

    Part Number(s)
    (NSID)    		Weight
    (milligrams)    		TypePinsMSL RatingPeak ReflowRoHS
    Status    		CAD SymbolsModelsPackage
    Marking
    Format
    ADC0820BCWMX/NOPB

    ADC0820BCWMX
    		518.972
    520.002
    		SOIC WIDE203
    2A    		260
    220    		DetailDownloadN/A
    		NSUZXYTT
    ADC0820
    BCWM
    ADC0820CCN/NOPB

    ADC0820CCN
    		1424.649
    1429.999
    		MDIP201
    1    		NA
    NA    		DetailDownloadN/A
    		NSUZXYYTTE#
    ADC0820CCN
    ADC0820CCWM/NOPB

    ADC0820CCWM
    		518.972
    520.002
    		SOIC WIDE203
    2A    		260
    220    		DetailDownloadN/A
    		NSUZXYTTE#
    ADC0820
    CCWM
    ADC0820CCWMX/NOPB

    ADC0820CCWMX
    		518.972
    520.002
    		SOIC WIDE203
    2A    		260
    220    		DetailDownloadN/A
    		NSUZXYTTE#
    ADC0820
    CCWM

    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 ADC0820.

    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 ADC0820 is located at RoHS Status.

    CAD Symbols and Models
    Download ADC0820 CAD Symbols
    		 Models
    N/A


    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    ADC0820BCWMXP2CMOS0508600145035002578995367
    ADC0820CCNP2CMOS0508600145035002578995367
    ADC0820CCWMP2CMOS0508600145035002578995367
    ADC0820CCWMXP2CMOS0508600145035002578995367

    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 ADC0820.

    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 ADC0820 is located at RoHS Status.

    Obsolete Versions
    Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
    ADC0820BCN
    		NONE
    		NONE
    		03 Jun 2003
    ADC0820BCV
    		ADC0820
    		TEXAS INSTRUMENTS
    		25 Oct 2005
    ADC0820BCVX
    		LTC1099
    		LINEAR TECHNOLOGY
    		25 Oct 2005
    ADC0820BCWM
    		NONE
    		NATIONAL SEMICONDUCTOR
    		01 Dec 2009
    ADC0820CCMSA
    		NONE
    		NONE
    		08 Sep 1998
    ADC0820CCMSAX
    		NONE
    		NONE
    		08 Sep 1998
    ADC0820CCV
    		NONE
    		NONE
    		08 Dec 1998
    ADC0820CIWM
    		NONE
    		NONE
    		08 Sep 1998
    ADC0820CIWMX
    		NONE
    		NONE
    		08 Sep 1998

    [Information as of 9-Feb-2012]
    Copyright © 2011 National Semiconductor Corporation