{"id":5257,"date":"2025-05-20T12:58:30","date_gmt":"2025-05-20T12:58:30","guid":{"rendered":"https:\/\/webprojects.cloud\/wordpress\/splatco\/?page_id=5257"},"modified":"2025-05-26T12:03:19","modified_gmt":"2025-05-26T12:03:19","slug":"analog-accuracy-is-expensive-resolution-is-cheap","status":"publish","type":"page","link":"https:\/\/webprojects.cloud\/wordpress\/splatco\/analog-accuracy-is-expensive-resolution-is-cheap\/","title":{"rendered":"Analog: Accuracy is expensive, Resolution is cheap"},"content":{"rendered":"\n<p>One of the most common misconceptions we see is the belief that high resolution in an analog measurement is the same as high accuracy. That is simply not so. For example, you might buy a thermistor that is accurate to \u00b12\u00b0C and use it in a circuit that can resolve 0.1\u00b0C changes. The 0.1\u00b0C resolution does nothing to improve the accuracy, it simply allows you to detect small changes (which may be very useful indeed).<br>\u00a0<br>In digital systems resolution is usually measured in\u00a0<em>bits<\/em>. 8 bits is 0.4% of full scale, 10 bits is 0.1%, 12 bits is 0.025%. You can buy an analog to digital converter chip with 12 bit\u00a0<em>resolution<\/em>\u00a0for a few dollars. A little more will buy you 18-bits (0.0004%). It&#8217;s no big deal as such things go. But to achieve 18-bit\u00a0<em>accuracy<\/em>\u00a0you would have to talk to the good folks at the national standards laboratories and probably mortgage your house.<br>\u00a0<br>The corollary is that you need to be careful when specifying the analog accuracy you need in a system. Over-specify and you may at best waste money and at worst price your product out of the market. Perform a careful analysis of what you need to measure and the bad things that may happen if the measurement is not accurate enough. Then source a solution that will provide sufficient performance with a modest margin of safety. If it looks as though you need a very expensive analog solution, ask yourself if your should find a different way of getting the result you want.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>One of the most common misconceptions we see is the belief that high resolution in an analog measurement is the same as high accuracy. That&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-5257","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Analog: Accuracy is expensive, Resolution is cheap - SPLat Controls<\/title>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Analog: Accuracy is expensive, Resolution is cheap - SPLat Controls\" \/>\n<meta property=\"og:description\" content=\"One of the most common misconceptions we see is the belief that high resolution in an analog measurement is the same as high accuracy. 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