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  1. #1
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    Trimming offset voltage

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    I found in book this circuit for trimming offset voltage. Laser cutting is not used for this. How can realise this circuit? I need use extra transistor to switch to supply raill or triming with zener-zapping?

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  2. #2
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    Re: Trimming offset voltage

    Fuse trim is one you can do anywhere (but maybe or maybe not
    "production qualified"). Poly or aluminum neck and a bond pad
    per "cut" (unless you go to on chip trim switches, which can be
    even larger than a bond pad and then you need a programming
    -interface- as well).

    NVM controlling a switch FET gate is another common option.
    Not my fave as in some applications NVM is not nonvolatile, and
    you may be pushed onto a more expensive flow to get the EEx
    element.

    Zener zap and gate zap are also nonvolatile (OTP) options,
    can work as a direct element or a gate control.


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  3. #3
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    Re: Trimming offset voltage

    thank for you reply. What is NVM ? How it look like?



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  4. #4
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    "Try SCE to AUX." /John Aaron/


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