[volt-nuts] Trimming the LTZ1000 tempco

[Bruce Griffiths]

Andreas Jahn wrote:
>
> ----- Original Message ----- From: "m k" <m1k3k1 at hotmail.com>
> To: <volt-nuts at febo.com>
> Sent: Wednesday, October 05, 2011 8:45 PM
> Subject: Re: [volt-nuts] Trimming the LTZ1000 tempco
>
>
>>
>> Looking at the data from various manufacturers of Zeners it seems 
>> that increasing the current makes the tempco become more positive.
>>
> Hi  m k,
>
> But on my LTZ1000A the tempco is positive  around +50 ppm/K at nominal 
> current.
> So you would have to reduce the current. But this would increase noise.
>
> with best regards
>
> Andreas
>
>
Then you can easily trim the tempco as illustrated in the diagram taken 
from  the bottom of page 6 of the current datasheet.

Bruce
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