/blogs_/archives/b/precisionhub/posts/the-self-powering-deviceOther Parts Discussed in Post: OPA192 As a newly hired employee recently out of college, previously known as “ John the intern ”, I thought my learning days were over. However, I quickly found out that is not the case and had a lesson on electro-staticen-USTelligent Community 13https://e2e.ti.com/blogs_/archives/b/precisionhub/posts/the-self-powering-deviceMon, 28 Apr 2014 16:55:15 GMTcb01d8b2-d089-468d-babb-77d1d8683490:b48287cc-a588-416c-b01e-6f1cb58a8603Tim Claycomb0<p>Hi Martin,</p> <p>I do not know of any figures relating to the EOS of a device. Most datasheets recommend limiting the input current to 10mA to prevent any damage to the device. The OPA192 datasheet gives this limitation in the Absolute Maximum Ratings. You could place a resistor in series with the input signal to limit the current but that will not eliminate the possibility of turning on the ESD diodes with the input signal.</p> <img src="https://e2e.ti.com/aggbug?PostID=665971&AppID=930&AppType=Weblog&ContentType=0" width="1" height="1">https://e2e.ti.com/blogs_/archives/b/precisionhub/posts/the-self-powering-deviceMon, 28 Apr 2014 01:49:21 GMTcb01d8b2-d089-468d-babb-77d1d8683490:b48287cc-a588-416c-b01e-6f1cb58a8603Harry0<p>Every newbie had this problem! I think everyone jurst figured a way around it without trying to figure why. good effort. </p> <img src="https://e2e.ti.com/aggbug?PostID=665971&AppID=930&AppType=Weblog&ContentType=0" width="1" height="1">https://e2e.ti.com/blogs_/archives/b/precisionhub/posts/the-self-powering-deviceSun, 27 Apr 2014 16:53:42 GMTcb01d8b2-d089-468d-babb-77d1d8683490:b48287cc-a588-416c-b01e-6f1cb58a8603Martin Steube-Henkel0<p>In Addition this usecase may cause an EOS of the diodes. The current is not limited by series resistors. The d/s do not mention about the current rating of the diodes. Tim, any Figuren about that?</p> <img src="https://e2e.ti.com/aggbug?PostID=665971&AppID=930&AppType=Weblog&ContentType=0" width="1" height="1">https://e2e.ti.com/blogs_/archives/b/precisionhub/posts/the-self-powering-deviceSun, 27 Apr 2014 15:15:59 GMTcb01d8b2-d089-468d-babb-77d1d8683490:b48287cc-a588-416c-b01e-6f1cb58a8603Stephen Scott0<p>The article mentions false inputs to a MCU. In the case that I observed, the voltage from the input signal was sufficient to prevent the MCU from performing a power-down-reset when the power was turned off.</p> <img src="https://e2e.ti.com/aggbug?PostID=665971&AppID=930&AppType=Weblog&ContentType=0" width="1" height="1">