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Electronics => Metrology => Topic started by: RandallMcRee on November 02, 2018, 04:42:25 pm

Title: Schematic for: "Filter Trims Ultra-Precision Voltage Reference" article
Post by: RandallMcRee on November 02, 2018, 04:42:25 pm

Hi folks,
 
This article:
www.electronicdesign.com/energy/filter-trims-ultra-precision-voltage-reference (http://www.electronicdesign.com/energy/filter-trims-ultra-precision-voltage-reference)
is intriguing, but the links to the figures do not work. Could not find in the wayback machine, either (probably pilot error).

Has anyone archived the schematic??

Thanks,
Randall

Title: Re: Schematic for: "Filter Trims Ultra-Precision Voltage Reference" article
Post by: Kleinstein on November 02, 2018, 05:34:44 pm

I am not absolutely sure it is the picture from the article, but I think I have local copy.

However the use of low pass filtering is limited to a voltage reference, as the interesting part is the very low frequency part, like below 0.01 Hz and this is hard to filter.

Title: Re: Schematic for: "Filter Trims Ultra-Precision Voltage Reference" article
Post by: Echo88 on November 02, 2018, 05:44:30 pm

This particular circuit was already discussed here, if its of interest to you:
https://www.eevblog.com/forum/metrology/(ft)-ltz1000a-fairy-tale-or-the-story-of-little-jumper/msg1190460/#msg1190460 (https://www.eevblog.com/forum/metrology/(ft)-ltz1000a-fairy-tale-or-the-story-of-little-jumper/msg1190460/#msg1190460)