{"id":2586,"date":"2015-08-10T17:00:59","date_gmt":"2015-08-10T17:00:59","guid":{"rendered":"http:\/\/41j.com\/blog\/?p=2586"},"modified":"2015-08-10T21:54:00","modified_gmt":"2015-08-10T21:54:00","slug":"15v-and-5v-ref-board","status":"publish","type":"post","link":"https:\/\/41j.com\/blog\/2015\/08\/15v-and-5v-ref-board\/","title":{"rendered":"+\/- 15V and 5V REF board"},"content":{"rendered":"<p><a href=\"http:\/\/41j.com\/blog\/wp-content\/uploads\/2015\/08\/pwr.png\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/41j.com\/blog\/wp-content\/uploads\/2015\/08\/pwr.png\" alt=\"pwr\" width=\"500\" height=\"233\" class=\"aligncenter size-full wp-image-2593\" \/><\/a><\/p>\n<p>This is a first pass at a power supply board for use with the <a href=\"http:\/\/41j.com\/blog\/2015\/08\/ad5791-arduino-shield\/\">AD5791 DAC board<\/a>. It should run from 3v up. It uses an LM3224 to boost the 3v to +\/- 16V and a MAX889 to invert this to give -16V. TPS7A3001 and TPS7A4901 linear regulators are used in an effort to avoid any switching noise and regulate down to +\/- 15V. The board also contains an ADR445 5V reference for the DAC. The switching components sit under an RF shield. I&#8217;m hoping that helps reduce noise in the system.<\/p>\n<p>Out to fab, fingers crossed it works!<\/p>\n<p>[UPDATE] Already found out the MAX889 is the wrong part. Only goes to 8V. Will be trying a LT1054.<\/p>\n<p>New LT1054 version: <a href=\"http:\/\/41j.com\/blog\/wp-content\/uploads\/2015\/08\/powerbrd.tar1.gz\">powerbrd.tar<\/a><\/p>\n<p>Old MAX889 version: <a href=\"http:\/\/41j.com\/blog\/wp-content\/uploads\/2015\/08\/powerbrd.tar.gz\">powerbrd.tar<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>This is a first pass at a power supply board for use with the AD5791 DAC board. It should run from 3v up. It uses an LM3224 to boost the 3v to +\/- 16V and a MAX889 to invert this to give -16V. TPS7A3001 and TPS7A4901 linear regulators are used in an effort to avoid [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[1],"tags":[],"class_list":["post-2586","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p1RRoU-FI","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/posts\/2586","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/comments?post=2586"}],"version-history":[{"count":4,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/posts\/2586\/revisions"}],"predecessor-version":[{"id":2594,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/posts\/2586\/revisions\/2594"}],"wp:attachment":[{"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/media?parent=2586"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/categories?post=2586"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/tags?post=2586"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}