+ Reply to Thread
Results 1 to 4 of 4

Thread: New ultra low power opamp

  1. #1
    RBW Member steevke has a spectacular aura about steevke has a spectacular aura about steevke has a spectacular aura about steevke has a spectacular aura about steevke has a spectacular aura about steevke has a spectacular aura about steevke's Avatar
    Join Date
    Jul 2005
    Location
    Belgium
    Posts
    327

    New ultra low power opamp

    Hey guys,

    seems that National semiconductor markets a new ultra low power op amp, well suited for O2 sensors in battery powered applications...

    Datasheet can be found here.
    http://www.national.com/ds/LP/LPV521.pdf

    Haven't played around with it but at 345nA current draw it seems an excellent choice.

    Regards

    Steven

  2. #2
    rEvo combat swimmer fireman has a reputation beyond repute fireman has a reputation beyond repute fireman has a reputation beyond repute fireman has a reputation beyond repute fireman has a reputation beyond repute fireman has a reputation beyond repute fireman has a reputation beyond repute fireman has a reputation beyond repute fireman has a reputation beyond repute fireman has a reputation beyond repute fireman has a reputation beyond repute fireman's Avatar
    Join Date
    Nov 2006
    Location
    chicago
    Posts
    850
    rEvo

    Orca

    Re: New ultra low power opamp

    Does anyone have a link for a general education on Opamps?

  3. #3
    Closed Account Art Greenberg will become famous soon enough Art Greenberg will become famous soon enough Art Greenberg will become famous soon enough Art Greenberg's Avatar
    Join Date
    Oct 2007
    Location
    Gainesville, FL
    Posts
    270
    Classic KISS

    Re: New ultra low power opamp

    Quote Originally Posted by fireman  View Original Post
    Does anyone have a link for a general education on Opamps?
    This should get you started:

    Operational amplifier - Wikipedia, the free encyclopedia

    Art

  4. #4
    Darlene Starr - DIY Diva Scuba_Vixen has a brilliant future Scuba_Vixen has a brilliant future Scuba_Vixen has a brilliant future Scuba_Vixen has a brilliant future Scuba_Vixen has a brilliant future Scuba_Vixen has a brilliant future Scuba_Vixen has a brilliant future Scuba_Vixen has a brilliant future Scuba_Vixen has a brilliant future Scuba_Vixen has a brilliant future Scuba_Vixen has a brilliant future Scuba_Vixen's Avatar
    Join Date
    May 2005
    Location
    St. Croix USVI
    Posts
    1,119

    Re: New ultra low power opamp

    Quote Originally Posted by steevke  View Original Post
    Hey guys,

    seems that National semiconductor markets a new ultra low power op amp, well suited for O2 sensors in battery powered applications...

    Datasheet can be found here.
    http://www.national.com/ds/LP/LPV521.pdf

    Haven't played around with it but at 345nA current draw it seems an excellent choice.

    Regards

    Steven

    I'm thinking that maybe it's best use for PO2 monitoring / control systems may be for managing a start-up circuit, where everything else is powered off but that, allowing a sensor to activate the turn on cycle.

    The greatest percentage of battery capacity is used for display and backlighting if applicable, when the unit is in use, but long or frequent periods of non-use can zap sizable reserves if the unit uses a sleep mode, as opposed to a hard " powered off " mode.

    Ultra low power op amps on the cell inputs may save a tiny bit of battery over the usual low power op amps of today, but since they only really function when the unit is in operation, the difference wouldn't be a significant percentage of the whole. .. though it's true that everything does add up

    Having a system that hard powered off, but kept one of those op amps alive to trigger turn on might indeed have an incredible shelf life.



    Darlene

+ Reply to Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts