{"id":905,"date":"2025-12-07T18:53:37","date_gmt":"2025-12-07T18:53:37","guid":{"rendered":"http:\/\/elerain.com\/?p=905"},"modified":"2026-01-11T22:01:06","modified_gmt":"2026-01-11T13:01:06","slug":"high-side-current-sensing-using-dual-current-mirrors-zds1009-example","status":"publish","type":"post","link":"https:\/\/elerain.com\/ko\/high-side-current-sensing-using-dual-current-mirrors-zds1009-example\/","title":{"rendered":"High-Side Current Sensing Using Dual Current Mirrors \u2014 ZDS1009 Example"},"content":{"rendered":"<p><strong>High-Side Current Sensing Using Dual Current Mirrors \u2014 ZDS1009 Example<\/strong><\/p>\n<p>The <strong>ZDS1009 datasheet<\/strong> includes an interesting high-side current sensing schematic that uses two matched current mirrors to translate the voltage drop across a shunt resistor into a ground-referenced output current.<\/p>\n<p>This implementation demonstrates an efficient analog method for high-side current measurement using only discrete transistors and resistors, leveraging precise current mirror matching for linear transfer characteristics.<\/p>\n<p>A neat solution to implement on discrete transistors for high-side sensing applications (above 120 Vdc), where suitable differential amplifier ICs are rarely available.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-906 aligncenter\" src=\"http:\/\/elerain.com\/wp-content\/uploads\/2025\/12\/43634643.jpg\" alt=\"\" width=\"901\" height=\"671\" srcset=\"https:\/\/elerain.com\/wp-content\/uploads\/2025\/12\/43634643.jpg 901w, https:\/\/elerain.com\/wp-content\/uploads\/2025\/12\/43634643-300x223.jpg 300w, https:\/\/elerain.com\/wp-content\/uploads\/2025\/12\/43634643-768x572.jpg 768w, https:\/\/elerain.com\/wp-content\/uploads\/2025\/12\/43634643-600x447.jpg 600w\" sizes=\"auto, (max-width: 901px) 100vw, 901px\" \/><\/p>\n<p>Here is the LTSpice simulation of high side current sensing at power rail voltage 10V:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-908 aligncenter\" src=\"http:\/\/elerain.com\/wp-content\/uploads\/2025\/12\/45754775.jpg\" alt=\"\" width=\"851\" height=\"635\" srcset=\"https:\/\/elerain.com\/wp-content\/uploads\/2025\/12\/45754775.jpg 915w, https:\/\/elerain.com\/wp-content\/uploads\/2025\/12\/45754775-300x224.jpg 300w, https:\/\/elerain.com\/wp-content\/uploads\/2025\/12\/45754775-768x573.jpg 768w, https:\/\/elerain.com\/wp-content\/uploads\/2025\/12\/45754775-600x448.jpg 600w\" sizes=\"auto, (max-width: 851px) 100vw, 851px\" \/><\/p>\n<p>Here is the LTSpice simulation of high side current sensing at power rail voltage 100V:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-910 aligncenter\" src=\"http:\/\/elerain.com\/wp-content\/uploads\/2025\/12\/234523523523.jpg\" alt=\"\" width=\"853\" height=\"638\" srcset=\"https:\/\/elerain.com\/wp-content\/uploads\/2025\/12\/234523523523.jpg 853w, https:\/\/elerain.com\/wp-content\/uploads\/2025\/12\/234523523523-300x224.jpg 300w, https:\/\/elerain.com\/wp-content\/uploads\/2025\/12\/234523523523-768x574.jpg 768w, https:\/\/elerain.com\/wp-content\/uploads\/2025\/12\/234523523523-600x449.jpg 600w\" sizes=\"auto, (max-width: 853px) 100vw, 853px\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>High-Side Current Sensing Using Dual Current Mirrors \u2014 ZDS1009 Example The ZDS1009 datasheet includes an interesting high-side current sensing schematic that uses two matched current mirrors to translate the voltage drop across a shunt resistor into a ground-referenced output current. This implementation demonstrates an efficient analog method for high-side current measurement using only discrete transistors&#8230;<\/p>\n","protected":false},"author":2,"featured_media":906,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[23],"tags":[],"class_list":["post-905","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-articles"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.0 (Yoast SEO v27.2) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>High-Side Current Sensing Using Dual Current Mirrors \u2014 ZDS1009 Example<\/title>\n<meta name=\"description\" content=\"High-Side Current Sensing Using Dual Current Mirrors \u2014 ZDS1009 Example The ZDS1009 datasheet includes an interesting high-side current sensing schematic\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/elerain.com\/ko\/high-side-current-sensing-using-dual-current-mirrors-zds1009-example\/\" \/>\n<meta property=\"og:locale\" content=\"ko_KR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"High-Side Current Sensing Using Dual Current Mirrors \u2014 ZDS1009 Example\" \/>\n<meta property=\"og:description\" content=\"High-Side Current Sensing Using Dual Current Mirrors \u2014 ZDS1009 Example The ZDS1009 datasheet includes an interesting high-side current sensing schematic\" \/>\n<meta property=\"og:url\" content=\"https:\/\/elerain.com\/ko\/high-side-current-sensing-using-dual-current-mirrors-zds1009-example\/\" \/>\n<meta property=\"og:site_name\" content=\"Elerain\" \/>\n<meta property=\"article:published_time\" content=\"2025-12-07T18:53:37+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-01-11T13:01:06+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/elerain.com\/wp-content\/uploads\/2025\/12\/43634643.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"901\" \/>\n\t<meta property=\"og:image:height\" content=\"671\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Elerain\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\uae00\uc4f4\uc774\" \/>\n\t<meta name=\"twitter:data1\" content=\"Elerain\" \/>\n\t<meta name=\"twitter:label2\" content=\"\uc608\uc0c1 \ub418\ub294 \ud310\ub3c5 \uc2dc\uac04\" \/>\n\t<meta name=\"twitter:data2\" content=\"2\ubd84\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/elerain.com\/ko\/high-side-current-sensing-using-dual-current-mirrors-zds1009-example\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/elerain.com\/ko\/high-side-current-sensing-using-dual-current-mirrors-zds1009-example\/\"},\"author\":{\"name\":\"Elerain\",\"@id\":\"https:\/\/elerain.com\/ko\/#\/schema\/person\/f42aeac0d8a141dd15cb72614e72fc0e\"},\"headline\":\"High-Side Current Sensing Using Dual Current Mirrors \u2014 ZDS1009 Example\",\"datePublished\":\"2025-12-07T18:53:37+00:00\",\"dateModified\":\"2026-01-11T13:01:06+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/elerain.com\/ko\/high-side-current-sensing-using-dual-current-mirrors-zds1009-example\/\"},\"wordCount\":126,\"commentCount\":0,\"image\":{\"@id\":\"https:\/\/elerain.com\/ko\/high-side-current-sensing-using-dual-current-mirrors-zds1009-example\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/elerain.com\/wp-content\/uploads\/2025\/12\/43634643.jpg\",\"articleSection\":[\"Articles\"],\"inLanguage\":\"ko-KR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/elerain.com\/ko\/high-side-current-sensing-using-dual-current-mirrors-zds1009-example\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/elerain.com\/ko\/high-side-current-sensing-using-dual-current-mirrors-zds1009-example\/\",\"url\":\"https:\/\/elerain.com\/ko\/high-side-current-sensing-using-dual-current-mirrors-zds1009-example\/\",\"name\":\"High-Side Current Sensing Using Dual Current Mirrors \u2014 ZDS1009 Example\",\"isPartOf\":{\"@id\":\"https:\/\/elerain.com\/ko\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/elerain.com\/ko\/high-side-current-sensing-using-dual-current-mirrors-zds1009-example\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/elerain.com\/ko\/high-side-current-sensing-using-dual-current-mirrors-zds1009-example\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/elerain.com\/wp-content\/uploads\/2025\/12\/43634643.jpg\",\"datePublished\":\"2025-12-07T18:53:37+00:00\",\"dateModified\":\"2026-01-11T13:01:06+00:00\",\"author\":{\"@id\":\"https:\/\/elerain.com\/ko\/#\/schema\/person\/f42aeac0d8a141dd15cb72614e72fc0e\"},\"description\":\"High-Side Current Sensing Using Dual Current Mirrors \u2014 ZDS1009 Example The ZDS1009 datasheet includes an interesting high-side current sensing schematic\",\"breadcrumb\":{\"@id\":\"https:\/\/elerain.com\/ko\/high-side-current-sensing-using-dual-current-mirrors-zds1009-example\/#breadcrumb\"},\"inLanguage\":\"ko-KR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/elerain.com\/ko\/high-side-current-sensing-using-dual-current-mirrors-zds1009-example\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"ko-KR\",\"@id\":\"https:\/\/elerain.com\/ko\/high-side-current-sensing-using-dual-current-mirrors-zds1009-example\/#primaryimage\",\"url\":\"https:\/\/elerain.com\/wp-content\/uploads\/2025\/12\/43634643.jpg\",\"contentUrl\":\"https:\/\/elerain.com\/wp-content\/uploads\/2025\/12\/43634643.jpg\",\"width\":901,\"height\":671},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/elerain.com\/ko\/high-side-current-sensing-using-dual-current-mirrors-zds1009-example\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\ud648\",\"item\":\"https:\/\/elerain.com\/ko\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"\uae30\uc0ac\",\"item\":\"https:\/\/elerain.com\/ko\/category\/articles\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"High-Side Current Sensing Using Dual Current Mirrors \u2014 ZDS1009 Example\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/elerain.com\/ko\/#website\",\"url\":\"https:\/\/elerain.com\/ko\/\",\"name\":\"Elerain\",\"description\":\"Elerain\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/elerain.com\/ko\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"ko-KR\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/elerain.com\/ko\/#\/schema\/person\/f42aeac0d8a141dd15cb72614e72fc0e\",\"name\":\"Elerain\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"ko-KR\",\"@id\":\"https:\/\/elerain.com\/wp-content\/uploads\/2025\/10\/favicon-100x100.png\",\"url\":\"https:\/\/elerain.com\/wp-content\/uploads\/2025\/10\/favicon-100x100.png\",\"contentUrl\":\"https:\/\/elerain.com\/wp-content\/uploads\/2025\/10\/favicon-100x100.png\",\"caption\":\"Elerain\"},\"description\":\"Experienced electronics engineers with up to 30+ years in analog, digital, and power electronics. Based in South Korea.\",\"url\":\"https:\/\/elerain.com\/ko\/author\/elerain\/\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"High-Side Current Sensing Using Dual Current Mirrors \u2014 ZDS1009 Example","description":"High-Side Current Sensing Using Dual Current Mirrors \u2014 ZDS1009 Example The ZDS1009 datasheet includes an interesting high-side current sensing schematic","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/elerain.com\/ko\/high-side-current-sensing-using-dual-current-mirrors-zds1009-example\/","og_locale":"ko_KR","og_type":"article","og_title":"High-Side Current Sensing Using Dual Current Mirrors \u2014 ZDS1009 Example","og_description":"High-Side Current Sensing Using Dual Current Mirrors \u2014 ZDS1009 Example The ZDS1009 datasheet includes an interesting high-side current sensing schematic","og_url":"https:\/\/elerain.com\/ko\/high-side-current-sensing-using-dual-current-mirrors-zds1009-example\/","og_site_name":"Elerain","article_published_time":"2025-12-07T18:53:37+00:00","article_modified_time":"2026-01-11T13:01:06+00:00","og_image":[{"width":901,"height":671,"url":"https:\/\/elerain.com\/wp-content\/uploads\/2025\/12\/43634643.jpg","type":"image\/jpeg"}],"author":"Elerain","twitter_card":"summary_large_image","twitter_misc":{"\uae00\uc4f4\uc774":"Elerain","\uc608\uc0c1 \ub418\ub294 \ud310\ub3c5 \uc2dc\uac04":"2\ubd84"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/elerain.com\/ko\/high-side-current-sensing-using-dual-current-mirrors-zds1009-example\/#article","isPartOf":{"@id":"https:\/\/elerain.com\/ko\/high-side-current-sensing-using-dual-current-mirrors-zds1009-example\/"},"author":{"name":"Elerain","@id":"https:\/\/elerain.com\/ko\/#\/schema\/person\/f42aeac0d8a141dd15cb72614e72fc0e"},"headline":"High-Side Current Sensing Using Dual Current Mirrors \u2014 ZDS1009 Example","datePublished":"2025-12-07T18:53:37+00:00","dateModified":"2026-01-11T13:01:06+00:00","mainEntityOfPage":{"@id":"https:\/\/elerain.com\/ko\/high-side-current-sensing-using-dual-current-mirrors-zds1009-example\/"},"wordCount":126,"commentCount":0,"image":{"@id":"https:\/\/elerain.com\/ko\/high-side-current-sensing-using-dual-current-mirrors-zds1009-example\/#primaryimage"},"thumbnailUrl":"https:\/\/elerain.com\/wp-content\/uploads\/2025\/12\/43634643.jpg","articleSection":["Articles"],"inLanguage":"ko-KR","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/elerain.com\/ko\/high-side-current-sensing-using-dual-current-mirrors-zds1009-example\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/elerain.com\/ko\/high-side-current-sensing-using-dual-current-mirrors-zds1009-example\/","url":"https:\/\/elerain.com\/ko\/high-side-current-sensing-using-dual-current-mirrors-zds1009-example\/","name":"High-Side Current Sensing Using Dual Current Mirrors \u2014 ZDS1009 Example","isPartOf":{"@id":"https:\/\/elerain.com\/ko\/#website"},"primaryImageOfPage":{"@id":"https:\/\/elerain.com\/ko\/high-side-current-sensing-using-dual-current-mirrors-zds1009-example\/#primaryimage"},"image":{"@id":"https:\/\/elerain.com\/ko\/high-side-current-sensing-using-dual-current-mirrors-zds1009-example\/#primaryimage"},"thumbnailUrl":"https:\/\/elerain.com\/wp-content\/uploads\/2025\/12\/43634643.jpg","datePublished":"2025-12-07T18:53:37+00:00","dateModified":"2026-01-11T13:01:06+00:00","author":{"@id":"https:\/\/elerain.com\/ko\/#\/schema\/person\/f42aeac0d8a141dd15cb72614e72fc0e"},"description":"High-Side Current Sensing Using Dual Current Mirrors \u2014 ZDS1009 Example The ZDS1009 datasheet includes an interesting high-side current sensing schematic","breadcrumb":{"@id":"https:\/\/elerain.com\/ko\/high-side-current-sensing-using-dual-current-mirrors-zds1009-example\/#breadcrumb"},"inLanguage":"ko-KR","potentialAction":[{"@type":"ReadAction","target":["https:\/\/elerain.com\/ko\/high-side-current-sensing-using-dual-current-mirrors-zds1009-example\/"]}]},{"@type":"ImageObject","inLanguage":"ko-KR","@id":"https:\/\/elerain.com\/ko\/high-side-current-sensing-using-dual-current-mirrors-zds1009-example\/#primaryimage","url":"https:\/\/elerain.com\/wp-content\/uploads\/2025\/12\/43634643.jpg","contentUrl":"https:\/\/elerain.com\/wp-content\/uploads\/2025\/12\/43634643.jpg","width":901,"height":671},{"@type":"BreadcrumbList","@id":"https:\/\/elerain.com\/ko\/high-side-current-sensing-using-dual-current-mirrors-zds1009-example\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\ud648","item":"https:\/\/elerain.com\/ko\/"},{"@type":"ListItem","position":2,"name":"\uae30\uc0ac","item":"https:\/\/elerain.com\/ko\/category\/articles\/"},{"@type":"ListItem","position":3,"name":"High-Side Current Sensing Using Dual Current Mirrors \u2014 ZDS1009 Example"}]},{"@type":"WebSite","@id":"https:\/\/elerain.com\/ko\/#website","url":"https:\/\/elerain.com\/ko\/","name":"Elerain","description":"Elerain","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/elerain.com\/ko\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"ko-KR"},{"@type":"Person","@id":"https:\/\/elerain.com\/ko\/#\/schema\/person\/f42aeac0d8a141dd15cb72614e72fc0e","name":"Elerain","image":{"@type":"ImageObject","inLanguage":"ko-KR","@id":"https:\/\/elerain.com\/wp-content\/uploads\/2025\/10\/favicon-100x100.png","url":"https:\/\/elerain.com\/wp-content\/uploads\/2025\/10\/favicon-100x100.png","contentUrl":"https:\/\/elerain.com\/wp-content\/uploads\/2025\/10\/favicon-100x100.png","caption":"Elerain"},"description":"Experienced electronics engineers with up to 30+ years in analog, digital, and power electronics. Based in South Korea.","url":"https:\/\/elerain.com\/ko\/author\/elerain\/"}]}},"_links":{"self":[{"href":"https:\/\/elerain.com\/ko\/wp-json\/wp\/v2\/posts\/905","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/elerain.com\/ko\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/elerain.com\/ko\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/elerain.com\/ko\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/elerain.com\/ko\/wp-json\/wp\/v2\/comments?post=905"}],"version-history":[{"count":0,"href":"https:\/\/elerain.com\/ko\/wp-json\/wp\/v2\/posts\/905\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/elerain.com\/ko\/wp-json\/wp\/v2\/media\/906"}],"wp:attachment":[{"href":"https:\/\/elerain.com\/ko\/wp-json\/wp\/v2\/media?parent=905"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/elerain.com\/ko\/wp-json\/wp\/v2\/categories?post=905"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/elerain.com\/ko\/wp-json\/wp\/v2\/tags?post=905"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}