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LM321LV: Max. output swing (again)

Genius 3135 points

Replies: 4

Views: 48

Part Number: LM321LV

I'm trying to interpret correctly the specification for output voltage swing, found near the bottom of the table in section 6.7.  The spec is called Voltage output swing from positive supply, and is given as 1 V in the MIN column.  I hope this is saying that the output will always get to within 1 V of the positive rail under the specified load condition.  However, shouldn't this mean that the 1 V should be in the MAX column?  In other words, the maximum distance down from the positive rail is 1 V, and typically it would be less than 1 V from the supply.

Please help me interpret this correctly.

Thanks,

Scott

  • Hi Scott,

    the output voltage swing is "minimum" 4V for 5V supply voltage (3V for 4V supply voltage, a.s.o). But the saturation voltage when trying to emit the positive supply voltage at the output of LM321LV is "maximum" 1V.

    See also figure 6 of datasheet.

    Kai

  • In reply to kai klaas69:

    Hello Scott,

    You and Kai are correct. the maximum is 1V.

    Regards,
    Ronald Michallick
    Linear Applications

    TI assumes no liability for applications assistance or customer product design. Customer is fully responsible for all design decisions and engineering with regard to its products, including decisions relating to application of TI products. By providing technical information, TI does not intend to offer or provide engineering services or advice concerning Customer's design. If Customer desires engineering services, the Customer should rely on its retained employees and consultants and/or procure engineering services from a licensed professional engineer (LPE).

     

  • In reply to kai klaas69:

    Thanks Kai, I'm glad that my interpretation is correct.  I think the datasheet needs to be revised to put the 1 V in the Max. column.

    Regards,
    Scott

  • In reply to Scott Brenneman:

    Scott,

    I put in a request for the limit to change sides. For VOL, I put in a request for test condition load to be >=10k not <=10k. 

    Regards,
    Ronald Michallick
    Linear Applications

    TI assumes no liability for applications assistance or customer product design. Customer is fully responsible for all design decisions and engineering with regard to its products, including decisions relating to application of TI products. By providing technical information, TI does not intend to offer or provide engineering services or advice concerning Customer's design. If Customer desires engineering services, the Customer should rely on its retained employees and consultants and/or procure engineering services from a licensed professional engineer (LPE).

     

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