/challenges-projects/design-challenges/polymer-capacitors/b/blog/posts/blog-1-brief-on-experimenting-the-performance-of-polymer-capacitors-in-instrumentation-amplifier-for-medicalExperimenting the performance of Polymer Capacitors in Instrumentation Amplifier for Medical 1. IntroducionMedical application like ECG use instrumentation amplifier to condition small signals in the presence of large common-mode voltages ...en-USTelligent Community 12https://community.element14.com/challenges-projects/design-challenges/polymer-capacitors/b/blog/posts/blog-1-brief-on-experimenting-the-performance-of-polymer-capacitors-in-instrumentation-amplifier-for-medicalWed, 22 May 2019 08:19:55 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:a263e166-4f01-4b02-8dfe-052ae6122b69michaelkellett1<p>The feature of polymer caps is usually low ESR. The use of two caps on power supply decoupling (which is not universally recommended) is often</p><p>based on the idea that small cap provides a low ESR but that the large capacitor (the 10uF in your case) should have a fairly high ESR (0.5ohms or more). </p><p>&nbsp;</p><p>How will you compare the performance of the polymer cap compared with a standard aluminum electrolytic, tantalum or ceramic in your circuit ?</p><p>&nbsp;</p><p>The small value caps would normally be MLCC or plastic film - MLCC caps should be used with caution in filter circuits, COG or NPO dielectrics are preferred.</p><p>Other materials have significant voltage/capacity sensitivity and can introduce large amounts of signal distortion in some filter applications.</p><p>&nbsp;</p><p>MK</p><img src="https://community.element14.com/aggbug?PostID=7122&AppID=229&AppType=Weblog&ContentType=0" width="1" height="1">