NFCのトピックTDA8954 problem https://community.nxp.com/t5/NFC/TDA8954-problem/m-p/858083#M4813 <HTML><HEAD></HEAD><BODY><P>Hello,</P><P>I have a problem with the TDA8954TH amplifier, after connecting the power supply, I burn the R2 resistor and DC appears on both outputs.</P><P>I tested on 7 IC, pcb checked several times for assembly errors.</P><P>Power supply +/- 40V</P><P>Integrated circuits ordered on ebay from china in August 2017. I suspect TDA8954 fakes. This offer is no longer available on eBay, but the title was:</P><P>10PCS TDA8954TH Encapsulation: HSOP24,2X150W class-D power amplifier # Q1186 ZX</P><P>In the annex, schematic diagram, pcb scheme and photo from the auction from tda8954.</P><P>Please check the correctness of the paths on the pcb.<BR />Thank you in advance and best regards<BR />Kamil</P></BODY></HTML> Mon, 07 Jan 2019 12:31:35 GMT kgaudio1 2019-01-07T12:31:35Z TDA8954 problem https://community.nxp.com/t5/NFC/TDA8954-problem/m-p/858083#M4813 <HTML><HEAD></HEAD><BODY><P>Hello,</P><P>I have a problem with the TDA8954TH amplifier, after connecting the power supply, I burn the R2 resistor and DC appears on both outputs.</P><P>I tested on 7 IC, pcb checked several times for assembly errors.</P><P>Power supply +/- 40V</P><P>Integrated circuits ordered on ebay from china in August 2017. I suspect TDA8954 fakes. This offer is no longer available on eBay, but the title was:</P><P>10PCS TDA8954TH Encapsulation: HSOP24,2X150W class-D power amplifier # Q1186 ZX</P><P>In the annex, schematic diagram, pcb scheme and photo from the auction from tda8954.</P><P>Please check the correctness of the paths on the pcb.<BR />Thank you in advance and best regards<BR />Kamil</P></BODY></HTML> Mon, 07 Jan 2019 12:31:35 GMT https://community.nxp.com/t5/NFC/TDA8954-problem/m-p/858083#M4813 kgaudio1 2019-01-07T12:31:35Z