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Help identifying and IC chip. — Parallax Forums

Help identifying and IC chip.

jdoleckijdolecki Posts: 726
edited 2010-02-21 17:27 in General Discussion
Its a 4 pin surface mount used in a motor for counting rpm.

There is a magnet that spins over the chip each rotation.

Im looking for a wiring or data sheet on how to hook it up.

Or a way to figure out which pins do what.

The only writing in it says 486?

Thanks John

Comments

  • Phil Pilgrim (PhiPi)Phil Pilgrim (PhiPi) Posts: 23,514
    edited 2010-02-21 04:39
    Please post a sharp close-up photo of the chip. That will help a lot to ID it.

    -Phil
  • jdoleckijdolecki Posts: 726
    edited 2010-02-21 06:10
    Here is a picture
    DSC_2129.JPG
    659 x 321 - 33K
  • Phil Pilgrim (PhiPi)Phil Pilgrim (PhiPi) Posts: 23,514
    edited 2010-02-21 06:35
    It could be a Panasonic Hall effect sensor, like this one: search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=DN6849S-ND.

    -Phil
  • jdoleckijdolecki Posts: 726
    edited 2010-02-21 07:28
    Looks like the right chip

    I tried all the example in the Understanding micro controller book for switches but cant get it to work

    How would i hook it up to an input

    Thanks again
  • sam_sam_samsam_sam_sam Posts: 2,286
    edited 2010-02-21 15:26


    1. Change of the operation magnetic flux density does not depend on the supply voltage, because the stabilization power supply is built-in. (only for the range ;· VCC= 4.5 to 16V)
    Electrical Characteristics (Ta=25°C) when I·read the speck what I get out of it that the output has at least 10 millamps

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    ··Thanks for any·idea.gif·that you may have and all of your time finding them smile.gif

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    Sam
  • jdoleckijdolecki Posts: 726
    edited 2010-02-21 17:10
    How do i wire that to an input?

    Also the Vdd and Vss on the homework board is only 5 v is that· to low to power the chip?

    thanks
  • sam_sam_samsam_sam_sam Posts: 2,286
    edited 2010-02-21 17:27
    The Data sheet say 4.5 to 16 volts how ever· it looks like 12 volts might me ideal

    Hook a volt meter to Vss to output and also try ·Vcc to output and see which one changes on some sensor I have seen it where Vcc to output is where you see the change not Vss to output

    Are you using a magnet on top of the chip .....>>>> ·try > to the right < >·to left·<> ·to top <> bottom <·· ·as well




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    ··Thanks for any·idea.gif·that you may have and all of your time finding them smile.gif

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    Sam
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