I've trawled the net and seen various requests for an LM3914 spice model, but not found a working one.
So here's one which I've devised which has no bells and whistles but which simulates, to a first order, the main IC functions including:- a) bar/dot mode selection, b) dot mode carry for cascaded ICs, c) resistor-programmed hi/lo reference voltages, d) output current selection, e) non-grounded V- and divider ladder, f) independent V+ and Vled, g) leakage current of outputs, h) segment overlap and i) supply current variation with V+ and Vref output load.
I'd appreciate a peer review of the model here at ETO prior to my uploading it to the Yahoo LTS user group. Constructive criticism and bug reports welcome.
Attached are two zip files: LM3914.zip contains a .sub model file, its .sym symbol file and a .asc test jig file. LM3914asc.zip contains similar files for a .asc hierarchical version of the model, in case anyone wants to modify it.
So here's one which I've devised which has no bells and whistles but which simulates, to a first order, the main IC functions including:- a) bar/dot mode selection, b) dot mode carry for cascaded ICs, c) resistor-programmed hi/lo reference voltages, d) output current selection, e) non-grounded V- and divider ladder, f) independent V+ and Vled, g) leakage current of outputs, h) segment overlap and i) supply current variation with V+ and Vref output load.
I'd appreciate a peer review of the model here at ETO prior to my uploading it to the Yahoo LTS user group. Constructive criticism and bug reports welcome.
Attached are two zip files: LM3914.zip contains a .sub model file, its .sym symbol file and a .asc test jig file. LM3914asc.zip contains similar files for a .asc hierarchical version of the model, in case anyone wants to modify it.
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