https://devzone.nordicsemi.com/f/nordic-q-a/1940/is-st-s-bal-nrf01d3-balun-compatible-with-the-nrf8001In the past I&#39;ve used the Johanson 2450BM14A0002 balun with the nRF8001 with great success. Unfortunately, it&#39;s now out of stock throughout the US at component retailers, and more supply isn&#39;t expected for a couple of months. Do you know if the BALen-USTelligent Community 13Thu, 20 Mar 2014 20:47:27 GMThttps://devzone.nordicsemi.com/thread/8330?ContentTypeID=1Thu, 20 Mar 2014 20:47:27 GMT137ad170-7792-4731-bb38-c0d22fbe4515:fd951fa2-9ac8-41e4-a7b1-e2688ca47013Garth Snyder<p>Thanks for being willing to speculate - this is very helpful.</p> <p>If I try this out, I&#39;ll report back here how it goes. Unfortunately, I don&#39;t have quantitative RF test equipment, so all I will be able to say is that it seemed to work (or didn&#39;t :-).</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/8329?ContentTypeID=1Thu, 20 Mar 2014 10:54:18 GMT137ad170-7792-4731-bb38-c0d22fbe4515:67144189-7da7-48b3-8a3b-2b8cbf80e35eketiljo<p>The Johanson balun was originally developed for the nRF24L01(+). Since the radio part of the nRF24-series is similar, the balun could also be used for other devices as well. But the length of the internal bonding wires are different. So that&#39;s why the distance between the chip and the balun are not the same. The nRF24LE1 and nRF8001 have shorter bonding wires than the nRF24L01 so the missing inductance must be compensated for by adding some track length in between.</p> <p>Now, the nRF8001 have longer bonding wires than the nRF24LE1. So a balun made for the nRF24LE1 should be placed closer to the nRF8001. The difference isn&#39;t large, so I guess you can place the ST balun as close as possible to the nRF8001 and make it work. I have&#39;t tried this though. But you should get decent output power by doing so.</p><div style="clear:both;"></div>