Circuit Design with 0.75V voltage reference

Discussion in 'The Projects Forum' started by 466576266, Apr 11, 2010.

  1. 466576266

    Thread Starter New Member

    Mar 17, 2010
    10
    0
    hello, anyone. Recently, i want to design a circuit of 0.75V reference voltage. i have researched the majority of the IC manufacturers' material, but i still cannt find a suitable design for my circuit.
    could anyone offer some materials about the circuit design? thanks.
     
  2. retched

    AAC Fanatic!

    Dec 5, 2009
    5,201
    312
    Can you us a stable 12v reference, then use 3 voltage dividers to achieve
    6v then
    3v then
    1.5v then
    .75v?
     
  3. Bychon

    Member

    Mar 12, 2010
    469
    41
    I just answered this on Electro-tech.
     
  4. retched

    AAC Fanatic!

    Dec 5, 2009
    5,201
    312
    Bychon! Are you moonlighting? YOU, YOU TWO TIMER!

    What was your answer?
     
  5. Bychon

    Member

    Mar 12, 2010
    469
    41
    LOL!

    lm4040 and 2 resistors.
     
  6. retched

    AAC Fanatic!

    Dec 5, 2009
    5,201
    312
    Should I start dating around? I might loose my job if I try to juggle another forum. Im already on here every waking moment Im not working...And I even check at work..

    The ladies LOVE it..
     
  7. Bychon

    Member

    Mar 12, 2010
    469
    41
    If I had a lady, I wouldn't be here!
     
  8. retched

    AAC Fanatic!

    Dec 5, 2009
    5,201
    312
    Pbbbhhtttt.. You have dogs.. Dont need a lady. My lady is asleep already.

    She is actually only mine a few hours a week..Which is perfect for me. She is addicted to work.

    [ed]
    Ohh..jeez.. So that is how voltage dividers work! Ahem..
    [/ed]
     
    Last edited: Apr 11, 2010
  9. Bychon

    Member

    Mar 12, 2010
    469
    41
    I tracked this guy down on another site and found the answer. Diodes Incorporated makes an adjustable shunt regulator that starts at .6 volts.

    ZXRE060
     
  10. retched

    AAC Fanatic!

    Dec 5, 2009
    5,201
    312
    Good to know. I dont know why, but good to know.

    I guess future devices are going to be operating on lesser voltages.
     
  11. someonesdad

    Senior Member

    Jul 7, 2009
    1,585
    141
    A few years ago I made a simple voltage reference from an LM285Z (per the data sheet) and it output 1.24 volts with a standard deviation of 0.000143 V measured 20 times over about a month over a temperature range of about 10 deg C.

    This could be divided down pretty easily. With the current I measured (10 μA or so if I remember correctly), it would run for about 5 years with the batteries I used. My wife "organized" my bench area and now I don't know where it is anymore (it's within a few meters of me though... :p).
     
  12. Bychon

    Member

    Mar 12, 2010
    469
    41
    The OP specifically rejected the use of resistors to lower a reference voltage. That's why this one was so difficult that I noticed it on another site.
     
  13. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    I feel your pain, brother. :( I can't get my spouse to realize that "tidyng up" is disasterous to my creativity.
     
  14. 466576266

    Thread Starter New Member

    Mar 17, 2010
    10
    0
    hey, thanks for all your replies. now, i have found an approach to solve my problem. the methos using a 1V IC and two resistors is sufficient for my design. anyway, thanks all.
     
Loading...