{"id":1554,"date":"2018-04-23T10:49:28","date_gmt":"2018-04-23T10:49:28","guid":{"rendered":"https:\/\/www.tina.com\/resources\/?page_id=1554"},"modified":"2018-06-21T10:28:00","modified_gmt":"2018-06-21T10:28:00","slug":"10-amplifiers-with-balanced-inputs-or-outputs","status":"publish","type":"page","link":"https:\/\/www.tina.com\/resources\/home\/practical-operational-amplifiers\/10-amplifiers-with-balanced-inputs-or-outputs\/","title":{"rendered":"10. Amplifiers with balanced Inputs or Outputs"},"content":{"rendered":"<div class=\"top-navigation\">\n<div class=\"current-page\"><img decoding=\"async\" src=\"https:\/\/www.tina.com\/images\/resource\/people-location-30.png\" \/>CURRENT &#8211; 10. Amplifiers with balanced Inputs or Outputs<\/div>\n<div class=\"previous-page\"><a href=\"https:\/\/www.tina.com\/resources\/home\/9-differential-summing\/\"><img decoding=\"async\" src=\"https:\/\/www.tina.com\/images\/resource\/leftarrow5.png\" \/>PREVIOUS- 9. Differential Summing<\/a><\/div>\n<div class=\"next-page\"><a href=\"https:\/\/www.tina.com\/resources\/practical-operational-amplifiers\/11-coupling-between-multiple-inputs\/\">NEXT- 11. Coupling between Multiple Inputs<img decoding=\"async\" src=\"https:\/\/www.tina.com\/images\/resource\/rightarrow5.png\" \/><\/a><\/div>\n<\/div>\n<p><script>\nfunction setStyle(){ \nheight = document.getElementsByClassName('entry-header')[0].clientHeight;\ndocument.getElementsByClassName('entry-header')[0].style.marginTop = height +\"px\";\ndocument.getElementsByClassName('top-navigation')[0].style.top = Math.round(-(height-20)*2) +\"px\";\n}\nsetStyle();\nwindow.onresize = function(event) {\nsetStyle();\n};\n<\/script><\/p>\n<div>\n<h6><em>Amplifiers with balanced Inputs or Outputs<\/em><\/h6>\n<p>The op-amp systems presented so far in this text are driven by voltages where one side of the source is grounded. Numerous op-amp applications require that we deal with voltages that are balanced; that is, neither side of the voltage source can be grounded. Op-amps are useful for converting a balanced input to a grounded (or unbalanced) output.<\/p>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-1566 size-full\" src=\"https:\/\/www.tina.com\/resources\/wp-content\/uploads\/2018\/04\/Practical-op-ampFigure9-44AB.png\" alt=\"Amplifiers with balanced Inputs or Outputs, operational amplifiers\" width=\"798\" height=\"221\" srcset=\"https:\/\/www.tina.com\/resources\/wp-content\/uploads\/2018\/04\/Practical-op-ampFigure9-44AB.png 798w, https:\/\/www.tina.com\/resources\/wp-content\/uploads\/2018\/04\/Practical-op-ampFigure9-44AB-300x83.png 300w, https:\/\/www.tina.com\/resources\/wp-content\/uploads\/2018\/04\/Practical-op-ampFigure9-44AB-768x213.png 768w\" sizes=\"auto, (max-width: 798px) 100vw, 798px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-1568 size-full\" src=\"https:\/\/www.tina.com\/resources\/wp-content\/uploads\/2018\/04\/Practical-op-ampFigure9-44CD.png\" alt=\"op-amps, operational amplifiers, circuit simulation\" width=\"802\" height=\"221\" srcset=\"https:\/\/www.tina.com\/resources\/wp-content\/uploads\/2018\/04\/Practical-op-ampFigure9-44CD.png 802w, https:\/\/www.tina.com\/resources\/wp-content\/uploads\/2018\/04\/Practical-op-ampFigure9-44CD-300x83.png 300w, https:\/\/www.tina.com\/resources\/wp-content\/uploads\/2018\/04\/Practical-op-ampFigure9-44CD-768x212.png 768w\" sizes=\"auto, (max-width: 802px) 100vw, 802px\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-1571 size-full\" src=\"https:\/\/www.tina.com\/resources\/wp-content\/uploads\/2018\/04\/Practical-op-ampFigure9-44EF.png\" alt=\"op-amps, operational amplifiers, circuit simulation\" width=\"802\" height=\"316\" srcset=\"https:\/\/www.tina.com\/resources\/wp-content\/uploads\/2018\/04\/Practical-op-ampFigure9-44EF.png 802w, https:\/\/www.tina.com\/resources\/wp-content\/uploads\/2018\/04\/Practical-op-ampFigure9-44EF-300x118.png 300w, https:\/\/www.tina.com\/resources\/wp-content\/uploads\/2018\/04\/Practical-op-ampFigure9-44EF-768x303.png 768w\" sizes=\"auto, (max-width: 802px) 100vw, 802px\" \/><\/p>\n<p>Figure 44 illustrates various configurations of balanced inputs and outputs. These configurations use the second method of balancing, that of cascading two op-amps.<\/p>\n<p>As an example, in the configuration shown in Figure 44(b) if <em>v<sub>in<\/sub><\/em> is supplied from a high-impedance source, the 5k\u03a9 resistors are no longer useful. Bias current may not be balanced in each amplifier. However, the effects of equal offsets due to unbalanced bias currents in the two input amplifiers should cancel one another. The alternative arrangement shown in the figure avoids this problem.<\/p>\n<p>&nbsp;<\/p>\n<\/div>\n<div class=\"previous-page\"><a href=\"https:\/\/www.tina.com\/resources\/home\/9-differential-summing\/\"><img decoding=\"async\" src=\"https:\/\/www.tina.com\/images\/resource\/leftarrow5.png\" \/>PREVIOUS- 9. Differential Summing<\/a><\/div>\n<div class=\"next-page\"><a href=\"https:\/\/www.tina.com\/resources\/practical-operational-amplifiers\/11-coupling-between-multiple-inputs\/\">NEXT- 11. Coupling between Multiple Inputs<img decoding=\"async\" src=\"https:\/\/www.tina.com\/images\/resource\/rightarrow5.png\" \/><\/a><\/div>\n<div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>CURRENT &#8211; 10. Amplifiers with balanced Inputs or Outputs PREVIOUS- 9. Differential Summing NEXT- 11. Coupling between Multiple Inputs Amplifiers with balanced Inputs or Outputs The op-amp systems presented so far in this text are driven by voltages where one side of the source is grounded. Numerous op-amp applications require that we deal with voltages [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":917,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"yst_prominent_words":[230,355,351,357,353,350,365,366,352,356,70,362,361,354,360,359,270,364,358,363],"class_list":["post-1554","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.tina.com\/resources\/wp-json\/wp\/v2\/pages\/1554","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.tina.com\/resources\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.tina.com\/resources\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.tina.com\/resources\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tina.com\/resources\/wp-json\/wp\/v2\/comments?post=1554"}],"version-history":[{"count":23,"href":"https:\/\/www.tina.com\/resources\/wp-json\/wp\/v2\/pages\/1554\/revisions"}],"predecessor-version":[{"id":3400,"href":"https:\/\/www.tina.com\/resources\/wp-json\/wp\/v2\/pages\/1554\/revisions\/3400"}],"up":[{"embeddable":true,"href":"https:\/\/www.tina.com\/resources\/wp-json\/wp\/v2\/pages\/917"}],"wp:attachment":[{"href":"https:\/\/www.tina.com\/resources\/wp-json\/wp\/v2\/media?parent=1554"}],"wp:term":[{"taxonomy":"yst_prominent_words","embeddable":true,"href":"https:\/\/www.tina.com\/resources\/wp-json\/wp\/v2\/yst_prominent_words?post=1554"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}