National Semiconductor | High-performance Analog

 

 LMP8601   
60V Common Mode, Bidirectional Precision Current Sensing Amplifier 		Click link to Download

Features

Unless otherwise noted, typical values at TA = 25°C, VS = 5.0V , Gain = 20x

TCVOS

10μV/°C max

CMRR

90 dB min

Input offset voltage

1 mV max

CMVR at VS = 3.3V

−4V to 27V

CMVR at VS = 5.0V

−22V to 60V

Operating ambient temperature range

−40°C to 125°C

LMP8601Q available in Automotive AEC-Q100 Grade 1 qualified version

Single supply bidirectional operation

All Min / Max limits 100% tested

Description

The LMP8601 and LMP8601Q are fixed 20x gain precision amplifiers. The part will amplify and filter small differential signals in the presence of high common mode voltages. The input common mode voltage range is –22V to +60V when operating from a single 5V supply. With 3.3V supply, the input common mode voltage range is from –4V to +27V. The LMP8601 and LMP8601Q are members of the Linear Monolithic Precision (LMP ®) family and are ideal parts for unidirectional and bidirectional current sensing applications. All parameter values of the part that are shown in the tables are 100% tested and all bold values are also 100% tested over temperature.

The part has a precise gain of 20x which is adequate in most targeted applications to drive an ADC to its full scale value. The fixed gain is achieved in two separate stages, a preamplifier with a gain of 10x and an output stage buffer amplifier with a gain of 2x. The connection between the two stages of the signal path is brought out on two pins to enable the possibility to create an additional filter network around the output buffer amplifier. These pins can also be used for alternative configurations with different gain as described in the applications section .

The mid-rail offset adjustment pin enables the user to use these devices for bidirectional single supply voltage current sensing. The output signal is bidirectional and mid-rail referenced when this pin is connected to the positive supply rail. With the offset pin connected to ground, the output signal is unidirectional and ground-referenced .

The LMP8601Q incorporates enhanced manufacturing and support processes for the automotive market, including defect detection methodologies. Reliability qualification is compliant with the requirements and temperature grades defined in the AEC Q100 standard.


Applications

  • High side and low side driver configuration current sensing
  • Bidirectional current measurement
  • Current loop to voltage conversion
  • Automotive fuel injection control
  • Transmission control
  • Power steering
  • Battery management systems

    • Also Recommended
    LMP8602▲Fixed Gain Of 50V/V
    LMP8603▲Fixed Gain Of 100V/V
    LMP8645▲Variable Gain


    3 typical applications

    Parameters / ValuesLMP8601 LMP8602 LMP8603 LMP8645
    Vcm Min-22 Volt -22 Volt -22 Volt -2 Volt
    Vcm Max60 Volt 60 Volt 60 Volt 42, 76 Volt
    Gain Range20 50 100 1 to 100
    Bi-DirectionalYes Yes Yes No
    Offset Voltage max, 25C0.15 mV 0.15 mV 0.15 mV 1 mV
    Bandwidth,60 kHz 60 kHz 60 kHz 850 kHz
    DC CMRR typ105 dB 105 dB 105 dB 95 dB
    Supply Min3 Volt 3 Volt 3 Volt 2.7 Volt
    Supply Max5.5 Volt 5.5 Volt 5.5 Volt 12 Volt
    Supply Current1.3 mA 1.5 mA 1.5 mA 0.61 mA
    Temperature Min-40 deg C -40 deg C -40 deg C -40 deg C
    Temperature Max125 deg C 125 deg C 125 deg C 125 deg C
    Special FeaturesUndefined Undefined Undefined Buffered Out
    TopologyLevel Shift Level Shift Level Shift V to I
    Voltage Noise890 nV/root(Hz) 890 nV/root(Hz) 890 nV/root(Hz) 120 nV/root(Hz)
    Filter OptionYes Yes Yes No
    Gain Error0.5 % 0.5 % 0.375 % 2 %
    TcVos Max10 uV/degC 10 uV/degC 10 uV/degC 7 uV/degC
    Input Resistance typ295 dBm/Hz 295 dBm/Hz 295 dBm/Hz 95 dBm/Hz
    AC CMRR @10kHz typ83 dB 83 dB 83 dB 35 dB
    AEC Q-100 Automotive Grade1 1 1
    PowerWiseNo No No No
    AutomotiveYes Yes Yes No
    Part Number(s)
    (NSID)    		Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LMP8601MA/NOPB


    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    AVNET-EMWorldwide161
    DIGI-KEYWorldwide867
    FARNELLEurope and Asia318
    MOUSERWorldwide220
    NEWARKAmericas318
    		$1.45 each at 1K+ pcsrail
    of
    95
    LMP8601MAX/NOPB


    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    AVNET-EMWorldwide2500
    DIGI-KEYWorldwide0
    		$1.45 each at 1K+ pcsreel
    of
    2500
    LMP8601QMA/NOPB

    Auto Grade 1
    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    AVNET-EMWorldwide95
    DIGI-KEYWorldwide79
    MOUSERWorldwide382
    		$1.85 each at 1K+ pcsrail
    of
    95
    LMP8601QMAX/NOPB

    Auto Grade 1
    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    		$1.85 each at 1K+ pcsreel
    of
    2500

    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 LMP8601.

    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 LMP8601 is located at RoHS Status.

    Part Number(s)
    (NSID)    		DescriptionAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LMP8601MAEVAL/NOPB

    		Evaluation Board for the LP8601 Evaluation BoardFull production
    Lead Free (RoHS)

     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    FARNELLEurope and Asia1
    MOUSERWorldwide1
    NEWARKAmericas1
    		$75.00 each1

    Description:

    The LMP8601 Current Sense Evaluation Board is designed to evaluate the LMP8601, 60V Common Mode, and Bidirectional Precision Current Sensing Amplifier. This board has a LMP8601 part mounted on the PCB together with the required de-coupling capacitor, power supply connections, Input and Output connectors and a 3 pin header for connecting the offset pin to either GND or Vs.

    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
    LMP8601MA/NOPB

    		69.761
    		SOIC NARROW81260DetailDownloadspice file
    		NSZXTT
    LMP86
    01MA
    LMP8601MAX/NOPB

    		69.761
    		SOIC NARROW81260DetailDownloadspice file
    		NSZXTT
    LMP86
    01MA
    LMP8601QMA/NOPB

    		69.761
    		SOIC NARROW81260DetailDownloadspice file
    		NSZXTT
    LMP86
    01QMA
    LMP8601QMAX/NOPB

    		69.761
    		SOIC NARROW81260DetailDownloadspice file
    		NSZXTT
    LMP86
    01QMA

    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 LMP8601.

    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 LMP8601 is located at RoHS Status.

    CAD Symbols and Models
    Download LMP8601 CAD Symbols
    		 Models
    spice file


    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    LMP8601MAVIP50CLZ305670009450004268146330
    LMP8601MAXVIP50CLZ305670009450004268146330
    LMP8601QMAVIP50CLZ305670009450004268146330
    LMP8601QMAXVIP50CLZ305670009450004268146330

    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 LMP8601.

    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 LMP8601 is located at RoHS Status.

    Motor Control Sensing in Factory Automation
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    Data Acquisition In Factory Automation
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    Factory Automation Overview
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    Motor Control Sensing in Factory Automation
    Date: 2009-08-04
    Length: 0:24:21
    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]
    Copyright © 2011 National Semiconductor Corporation