National Semiconductor | High-performance Analog

 

 LMH7322   
Dual 700 ps High Speed Comparator with RSPECL Outputs from the PowerWise® Family		 Click link to Download

Features

(VCCI = +5V, VCCO = +5V)

Propagation delay

700 ps

Overdrive dispersion 20 mV-1V

75 ps

Fast rise and fall times

160 ps

Wide supply range

2.7V to 12V

  • Input common mode range extends 200 mV below negative rail
  • Adjustable hysteresis
  • (RS)PECL outputs (see application note)
  • (RS)PECL latch inputs (see application note)

    • Description

    The LMH7322 is a dual comparator with 700 ps propagation delay, low dispersion of 75 ps and an input voltage range that extends from VCC-1.5V to VEE. The devices can be operated from a wide supply voltage range of 2.7V to 12V. The adjustable hysteresis adds flexibility and prevents oscillations. Both the outputs and latch inputs of the LMH7322 are RSPECL compatible. When used in combination with a VCCO supply voltage of 2.5V the outputs have LVDS compatible levels.

    The LMH7322 is available in a 24-pin LLP package.


    Applications

  • Digital receivers
  • High-speed signal restoration
  • Zero-crossing detectors
  • High-speed sampling
  • Window comparators
  • High-speed signal triggering

    • Also Recommended
    LMH7220▲For A Single LVDS 2.9nS Prop Delay High Speed Comparator
    LMH7324▲For A Quad Version- Also Has Enhanced Dispersion Specs


    ECL to PECL converter

    Parameters / ValuesLMH7322 LMH7220 LMH7324
    Response Time0.0007 us 0.0029 us 0.0007 us
    Output BusLVDS/RSPECL LVDS LVDS/RSPECL
    Supply Min2.7 Volt 2.7 Volt 5 Volt
    Supply Max12 Volt 12 Volt 12 Volt
    Channels2 Channels 1 Channels 4 Channels
    Offset Voltage max, 25C8 mV 2.7 mV 9.5 mV
    Output Current50 mA 5 mA 25 mA
    Input RangeVcm to V- Vcm to V- Vcm to V-
    Supply Current Per Channel30 mA 7.5 mA 25 mA
    PowerWise Rating 321 uA x us 22 uA x us 18 uA x us
    Max Input Bias Current5000 nA 7000 nA 5000 nA
    Special FeaturesAdj Output Swing, Adj Hysteresis LVDS Out LVDS/RSPECL Out
    Temperature Min-40 deg C -40 deg C -40 deg C
    Temperature Max125 deg C 125 deg C 85 deg C
    FunctionComparator Comparator Comparator
    PowerWiseYes Yes Yes

    Datasheets
    TitleSizeDateOther
    Language
    LMH7322 Dual 700 ps High Speed Comparator with RSPECL Outputs605
    Kbytes    		11-May-11日本語  


    Application Notes
    TitleSizeDateOther
    Language
    AN-1602: Application Note 1602 LMH7322 Dual Comparator Evaluation Board1838
    Kbytes    		30-Mar-07 

    Part Number(s)
    (NSID)    		Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LMH7322SQ/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide2939
    FARNELLEurope and Asia1023
    NEWARKAmericas77
    		$3.50 each at 100+ pcsreel
    of
    1000
    LMH7322SQE/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$3.50 each at 100+ pcsreel
    of
    250
    LMH7322SQX/NOPB


    RoHS Status

    LLP    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$3.50 each at 100+ 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 LMH7322.

    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 LMH7322 is located at RoHS Status.

    Part Number(s)
    (NSID)    		DescriptionAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LMH7322EVAL/NOPB

    		LMH7322 Dual 700ps High Speed Comparator with RSPECL Outputs Evaluation BoardFull production
    Lead Free (RoHS)

     
    DistributorRegionQty
    AVNET-EMWorldwide1
    DIGI-KEYWorldwide0
    MOUSERWorldwide2
    		$151.00 each1

    Description:

    This board is designed to demonstrate the LMH7322 Dual Comparator with RSPECL outputs. It will facilitate the evaluation of the LMH7322 in most of the possible configurations. There is one part containing two comparators mounted onto this board. The intention of this board is to demonstrate the conversion of an analog signal to a digital presentation at LVDS levels and to translate this LVDS signal to RSECL levels. The LATCH function can be evaluated using the two switches mounted on the edge of the board. Two test points located between the comparators allows checking the LVDS levels while the output signals are fed to two SMA connectors that feed the signals on a 50? basis to any scope or analyzer. To demonstrate the hysteresis functionality both hysteresis resistors are mounted on header pins, which makes them changeable in a convenient manner. Only two supply voltages are needed to make this setup work. The positive supply is +2.5V and the negative supply is −5.2V.

    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
    LMH7322SQ/NOPB

    		39.849
    		LLP243260DetailDownloadN/A
    		NS
    UZXYTT
    L7322SQ
    LMH7322SQE/NOPB

    		39.849
    		LLP243260DetailDownloadN/A
    		NS
    UZXYTT
    L7322SQ
    LMH7322SQX/NOPB

    		39.849
    		LLP243260DetailDownloadN/A
    		NS
    UZXYTT
    L7322SQ

    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 LMH7322.

    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 LMH7322 is located at RoHS Status.

    CAD Symbols and Models
    Download LMH7322 CAD Symbols
    		 Models
    N/A


    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    LMH7322SQVIP 100134110012450003353272149
    LMH7322SQEVIP 100134110012450003353272149
    LMH7322SQXVIP 100134110012450003353272149

    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 LMH7322.

    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 LMH7322 is located at RoHS Status.

    [Information as of 6-Feb-2012]
    Copyright © 2011 National Semiconductor Corporation