{"id":432,"date":"2022-01-05T22:08:10","date_gmt":"2022-01-05T14:08:10","guid":{"rendered":"https:\/\/ezblog.cn\/?p=432"},"modified":"2026-10-20T20:32:30","modified_gmt":"2026-10-20T12:32:30","slug":"bandgap","status":"publish","type":"post","link":"https:\/\/ezblog.cn\/?p=432","title":{"rendered":"\u5e26\u9699\u4e0e\u4e9a\u9608\u503c CMOS \u57fa\u51c6"},"content":{"rendered":"\n<p>\u5728\u6570\u636e\u8f6c\u6362\u5668\uff08ADC\/DAC\uff09\u548c\u7ebf\u6027\u7a33\u538b\u5668\uff08LDO\uff09\u4e2d\uff0c\u57fa\u51c6\u7535\u538b\u6e90\u76f4\u63a5\u5f71\u54cd\u6574\u4e2a\u7cfb\u7edf\u7684\u7cbe\u5ea6\u3002\u5e26\u9699\u57fa\u51c6\u7684\u6838\u5fc3\u601d\u60f3\u5e76\u975e\u5bfb\u627e\u4e00\u79cd\u201c\u65e0\u6e29\u6f02\u5668\u4ef6\u201d\uff0c\u800c\u662f\u7528\u6b63\u6e29\u5ea6\u7cfb\u6570\uff08PTAT\uff09\u62b5\u6d88\u8d1f\u6e29\u5ea6\u7cfb\u6570\uff08CTAT\uff09\uff0c\u5728\u7279\u5b9a\u6e29\u5ea6\u70b9\u5b9e\u73b0\u4e00\u9636\u96f6\u6e29\u6f02\u3002<\/p>\n<h2>\u6e29\u5ea6\u8865\u507f\u7684\u57fa\u672c\u601d\u8def<\/h2>\n<p>\u6052\u5b9a\u7535\u6d41\u4e0b\uff0cBJT \u7684\u57fa\u6781\u2014\u53d1\u5c04\u6781\u7535\u538b VBE \u968f\u6e29\u5ea6\u4e0a\u5347\u800c\u4e0b\u964d\u3002\u5b83\u7684\u8d1f\u6e29\u5ea6\u7cfb\u6570\u5e76\u975e\u4e00\u4e2a\u5e38\u6570\uff0c\u8fd9\u662f\u5e26\u9699\u57fa\u51c6\u5b58\u5728\u9ad8\u9636\u6e29\u5ea6\u975e\u7ebf\u6027\uff08\u66f2\u7387\u8bef\u5dee\uff09\u7684\u7269\u7406\u6839\u6e90\u3002<\/p>\n<p>\u5c06\u4e24\u4e2a BJT \u504f\u7f6e\u5728\u4e0d\u540c\u7684\u96c6\u7535\u6781\u7535\u6d41\u5bc6\u5ea6\u4e0b\uff0c\u5b83\u4eec\u7684\u7ed3\u7535\u538b\u4e4b\u5dee \u0394VBE \u4e3a\u6b63\u6e29\u5ea6\u7cfb\u6570\u7535\u538b\u3002\u5c06 VBE \u4e0e\u52a0\u6743\u540e\u7684 \u0394VBE \u76f8\u52a0\uff0c\u5373\u53ef\u62b5\u6d88\u4e00\u9636\u6e29\u6f02\uff1a<\/p>\n<p class=\"formula\">V<sub>ref<\/sub> = V<sub>BE<\/sub> + K\u0394V<sub>BE<\/sub><\/p>\n<p>\u9664\u4e86\u7535\u538b\u6c42\u548c\u6a21\u5f0f\uff0c\u5728\u4f4e\u538b\u8bbe\u8ba1\u4e2d\u8fd8\u53ef\u91c7\u7528\u7535\u6d41\u6a21\uff1a\u5206\u522b\u4ea7\u751f\u8d1f\u6e29\u6f02\u7535\u6d41\u4e0e\u6b63\u6e29\u6f02\u7535\u6d41\uff0c\u5728\u8f93\u51fa\u8d1f\u8f7d\u7535\u963b\u4e0a\u6c42\u548c\u5f97\u5230\u53ef\u7f29\u653e\u7684\u57fa\u51c6\u7535\u538b\u3002\u4e00\u9636\u8865\u507f\u5e76\u4e0d\u6d88\u9664\u66f2\u7387\u8bef\u5dee\u3002<\/p>\n<h2>Brokaw \u7535\u538b\u57fa\u51c6<\/h2>\n<p>\u8fd0\u653e\u5229\u7528\u76f8\u7b49\u96c6\u7535\u6781\u8d1f\u8f7d\u7535\u963b\uff0c\u5f3a\u5236\u4e24\u7ba1\u7684\u96c6\u7535\u6781\u7535\u6d41\u4e0e\u96c6\u7535\u6781\u2014\u53d1\u5c04\u6781\u7535\u538b\u76f8\u7b49\uff0c\u51cf\u5c0f\u5384\u5229\u6548\u5e94\u5f15\u8d77\u7684\u8bef\u5dee\uff1b\u4e24\u7ba1\u53d1\u5c04\u6781\u9762\u79ef\u4e0d\u540c\uff0c\u4ea7\u751f\u6240\u9700\u7684\u7535\u6d41\u5bc6\u5ea6\u5dee\u3002<\/p>\n<figure><img decoding=\"async\" style=\"max-width:100%;height:auto;\" src=\"https:\/\/ezblog.cn\/wp-content\/uploads\/2026\/10\/01_brokaw_circuit.png\" alt=\"Brokaw \u7535\u538b\u57fa\u51c6\u6838\u5fc3\u7535\u8def\" loading=\"lazy\"><\/figure>\n<p>\u56fe\uff1aBrokaw \u7535\u538b\u57fa\u51c6\u3002<\/p>\n<p>\u8fd9\u4e00\u7ed3\u6784\u9700\u8981\u72ec\u7acb\u96c6\u7535\u6781\u8282\u70b9\u7684 BJT\u3002\u6709\u9650\u7535\u6d41\u589e\u76ca\u5f15\u8d77\u7684\u57fa\u6781\u7535\u6d41\u4e5f\u4f1a\u5e26\u6765\u8bef\u5dee\uff0c\u9700\u8981\u5728\u7535\u8def\u8bbe\u8ba1\u4e2d\u8003\u8651\u8865\u507f\u3002<\/p>\n<h2>\u6807\u51c6 CMOS \u7eb5\u5411 BJT \u57fa\u51c6<\/h2>\n<p>\u6807\u51c6 CMOS \u5de5\u827a\u53ef\u4ee5\u5229\u7528\u7eb5\u5411\u5bc4\u751f BJT \u5b9e\u73b0\u5e26\u9699\u57fa\u51c6\u3002\u4ee5 n-well \u5de5\u827a\u4e3a\u4f8b\uff0c\u5229\u7528\u9631\u4f5c\u57fa\u6781\u3001\u886c\u5e95\u4f5c\u96c6\u7535\u6781\u6784\u6210\u7eb5\u5411\u5bc4\u751f PNP\u3002<\/p>\n<p>\u8fd9\u7c7b\u5668\u4ef6\u7684\u4e00\u4e2a\u9650\u5236\u662f\u57fa\u6781\u4e32\u8054\u7535\u963b\u8f83\u5927\u3002\u4e3a\u51cf\u5c0f\u57fa\u6781\u7535\u963b\u538b\u964d\u8bef\u5dee\uff0c\u9700\u8981\u9650\u5236\u504f\u7f6e\u7535\u6d41\uff0c\u5e76\u7ed3\u5408\u5de5\u827a\u5668\u4ef6\u6a21\u578b\u4e0e\u7248\u56fe\u8fdb\u884c\u68c0\u67e5\uff1b\u8fd0\u653e\u8f93\u5165\u5931\u8c03\u7535\u538b\u540c\u6837\u4f1a\u5f71\u54cd\u57fa\u51c6\u7cbe\u5ea6\u3002<\/p>\n<h2>\u4e9a\u9608\u503c CMOS \u57fa\u51c6<\/h2>\n<p>\u4e9a\u9608\u503c CMOS \u57fa\u51c6\u91c7\u7528\u5168 MOS \u5b9e\u73b0\uff0c\u5de5\u4f5c\u5728\u5f31\u53cd\u578b\u533a\uff0c\u9002\u5408\u4f4e\u529f\u8017\u5e94\u7528\u3002\u5176\u57fa\u672c\u601d\u8def\u4ecd\u662f\u5229\u7528\u4e0d\u540c\u6e29\u5ea6\u7279\u6027\u7684\u7535\u538b\u8fdb\u884c\u8865\u507f\u3002<\/p>\n<figure><img decoding=\"async\" style=\"max-width:100%;height:auto;\" src=\"https:\/\/ezblog.cn\/wp-content\/uploads\/2026\/10\/subthreshold.png\" alt=\"\u4e9a\u9608\u503c CMOS \u57fa\u51c6\u7535\u8def\" loading=\"lazy\"><\/figure>\n<p>\u56fe\uff1a\u4e9a\u9608\u503c CMOS \u57fa\u51c6\u3002<\/p>\n<p>\u5f31\u53cd\u578b\u533a\u7684\u7535\u6d41\u5448\u6307\u6570\u5173\u7cfb\uff0c\u53ef\u7528\u8f83\u5c0f\u7684\u504f\u7f6e\u7535\u6d41\u5de5\u4f5c\uff0c\u4f46\u5bf9\u5de5\u827a\u9608\u503c\u7535\u538b\u6f02\u79fb\u53ca\u6f0f\u7535\u6d41\u8f83\u654f\u611f\u3002\u9009\u62e9\u57fa\u51c6\u67b6\u6784\u65f6\uff0c\u9700\u8981\u5728\u7cbe\u5ea6\u3001\u4f9b\u7535\u7535\u538b\u3001\u529f\u8017\u4e0e\u5de5\u827a\u6761\u4ef6\u4e4b\u95f4\u6298\u4e2d\uff1b\u9ad8\u7cbe\u5ea6\u8bbe\u8ba1\u8fd8\u9700\u8003\u8651\u5931\u8c03\u6d88\u9664\u4e0e\u9ad8\u9636\u66f2\u7387\u8865\u507f\u3002<\/p>\n<p>\u6b64\u5916\uff0c\u81ea\u504f\u7f6e\u57fa\u51c6\u53ef\u80fd\u5b58\u5728\u96f6\u7535\u6d41\u5e73\u8861\u70b9\uff0c\u542f\u52a8\u7535\u8def\u9700\u8981\u4fdd\u8bc1\u4e0a\u7535\u540e\u8fdb\u5165\u76ee\u6807\u5de5\u4f5c\u70b9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u6570\u636e\u8f6c\u6362\u5668\uff08ADC\/DAC\uff09\u548c\u7ebf\u6027\u7a33\u538b\u5668\uff08LDO\uff09\u4e2d\uff0c\u57fa\u51c6\u7535\u538b\u6e90\u76f4\u63a5\u5f71\u54cd\u6574\u4e2a\u7cfb\u7edf\u7684\u7cbe\u5ea6\u3002\u5e26\u9699\u57fa\u51c6\u7684\u6838\u5fc3\u601d\u60f3\u5e76\u975e\u5bfb\u627e\u4e00\u79cd\u201c\u65e0\u6e29\u6f02\u5668\u4ef6\u201d\uff0c\u800c\u662f\u7528\u6b63\u6e29\u5ea6\u7cfb\u6570\uff08PTAT\uff09\u62b5\u6d88\u8d1f\u6e29\u5ea6\u7cfb\u6570\uff08CTAT\uff09\uff0c\u5728\u7279\u5b9a\u6e29&#8230; <a href=\"https:\/\/ezblog.cn\/?p=432\" class=\"readmore\">Read more<span class=\"screen-reader-text\">\u5e26\u9699\u4e0e\u4e9a\u9608\u503c CMOS \u57fa\u51c6<\/span><span class=\"fa fa-angle-double-right\" aria-hidden=\"true\"><\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[12],"tags":[],"views":2233,"_links":{"self":[{"href":"https:\/\/ezblog.cn\/index.php?rest_route=\/wp\/v2\/posts\/432"}],"collection":[{"href":"https:\/\/ezblog.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ezblog.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ezblog.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ezblog.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=432"}],"version-history":[{"count":4,"href":"https:\/\/ezblog.cn\/index.php?rest_route=\/wp\/v2\/posts\/432\/revisions"}],"predecessor-version":[{"id":574,"href":"https:\/\/ezblog.cn\/index.php?rest_route=\/wp\/v2\/posts\/432\/revisions\/574"}],"wp:attachment":[{"href":"https:\/\/ezblog.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=432"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ezblog.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=432"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ezblog.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=432"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}