21-07-2015, 16:25
Hi,
That particular chip (MCP6241) has an input offset voltage of +/- 5mV which may produce a rather large offset (error) of the "zero" luminance level, with the positive gain configuration used by Werk. It would be less of an issue if using a "virtual earth" negative feeback configuration as described earlier.
Cheers, Alan.
That particular chip (MCP6241) has an input offset voltage of +/- 5mV which may produce a rather large offset (error) of the "zero" luminance level, with the positive gain configuration used by Werk. It would be less of an issue if using a "virtual earth" negative feeback configuration as described earlier.
Cheers, Alan.