NFCのトピックRe: UCode DNA Chip Impedance https://community.nxp.com/t5/NFC/UCode-DNA-Chip-Impedance/m-p/847063#M4693 <HTML><HEAD></HEAD><BODY><P>Hi Alan,</P><P></P><P>1. What is the chip impedance information for UCode DNA?</P><P>- This info is under NDA, and you have to request it from the docstore. Please refer to the attachment for more details.</P><P><span class="lia-inline-image-display-wrapper" image-alt="pastedImage_1.png"><img src="https://community.nxp.com/t5/image/serverpage/image-id/67625iE6B2316F166ED0A8/image-size/large?v=v2&amp;px=999" role="button" title="pastedImage_1.png" alt="pastedImage_1.png" /></span></P><P>2. Is the chip impedance of UCode DNA similar to (or the same as) UCode 7?</P><P>-<SPAN style="font-size: 11.0pt;">Yes the impedance is similar – not exactly the same.</SPAN></P><P>3. Can I design an antenna based on the chip impedance information of Ucode 7, and so the antenna can work for both Ucode 7 and UCode DNA?</P><P>-<SPAN style="font-size: 11.0pt;">Maybe some fine tuning needed but the answer is yes. Antennas will work for both .<BR /></SPAN></P><P><SPAN style="font-size: 11.0pt;">&nbsp;</SPAN></P><P><SPAN style="font-size: 11.0pt;">Hope that makes sense,</SPAN></P><P><BR />Have a great day,<BR />Kan</P><P></P><P>-----------------------------------------------------------------------------------------------------------------------<BR />Note: If this post answers your question, please click the Correct Answer button. Thank you!<BR />-----------------------------------------------------------------------------------------------------------------------</P></BODY></HTML> Fri, 24 Aug 2018 08:56:24 GMT Kan_Li 2018-08-24T08:56:24Z UCode DNA Chip Impedance https://community.nxp.com/t5/NFC/UCode-DNA-Chip-Impedance/m-p/847062#M4692 <HTML><HEAD></HEAD><BODY><P>Dear Sir/Madam</P><P></P><P>We are trying to design a transponder antenna, and we intend to use the UCode DNA chip.&nbsp; We have downloaded the datasheet of the UCode DNA, but there is no chip impedance information.&nbsp; What we can see from the official link</P><P><A class="link-titled" href="https://www.nxp.com/products/identification-and-security/smart-label-and-tag-ics/ucode-dna/ucode-dna:SL3S5002N0FUD" title="https://www.nxp.com/products/identification-and-security/smart-label-and-tag-ics/ucode-dna/ucode-dna:SL3S5002N0FUD">UCODE DNA|NXP</A>&nbsp;, saying the antenna design benefit is&nbsp;</P><UL class="" style="color: #4a4a4d; background-color: #ffffff; font-size: 16px; margin-bottom: 1em;"><LI class="" style="margin-bottom: 0.5em; padding-left: 1.25em;">Selected chip impedance enables re-use of antenna designs from UCODE 7</LI></UL><P>Therefore, we have downloaded the datasheet of UCode 7, and found the chip impedance of UCode 7 as 18-j245 (at 915 MHz) as the typical assembled impedance for antenna design.</P><P></P><P>My questions are,&nbsp;</P><P>1. What is the chip impedance information for UCode DNA?</P><P>2. Is the chip impedance of UCode DNA similar to (or the same as) UCode 7?</P><P>3. Can I design an antenna based on the chip impedance information of Ucode 7, and so the antenna can work for both Ucode 7 and UCode DNA?</P><P></P><P>Thanks</P><P>-Alan</P></BODY></HTML> Sat, 11 Aug 2018 15:53:26 GMT https://community.nxp.com/t5/NFC/UCode-DNA-Chip-Impedance/m-p/847062#M4692 alan_mak 2018-08-11T15:53:26Z Re: UCode DNA Chip Impedance https://community.nxp.com/t5/NFC/UCode-DNA-Chip-Impedance/m-p/847063#M4693 <HTML><HEAD></HEAD><BODY><P>Hi Alan,</P><P></P><P>1. What is the chip impedance information for UCode DNA?</P><P>- This info is under NDA, and you have to request it from the docstore. Please refer to the attachment for more details.</P><P><span class="lia-inline-image-display-wrapper" image-alt="pastedImage_1.png"><img src="https://community.nxp.com/t5/image/serverpage/image-id/67625iE6B2316F166ED0A8/image-size/large?v=v2&amp;px=999" role="button" title="pastedImage_1.png" alt="pastedImage_1.png" /></span></P><P>2. Is the chip impedance of UCode DNA similar to (or the same as) UCode 7?</P><P>-<SPAN style="font-size: 11.0pt;">Yes the impedance is similar – not exactly the same.</SPAN></P><P>3. Can I design an antenna based on the chip impedance information of Ucode 7, and so the antenna can work for both Ucode 7 and UCode DNA?</P><P>-<SPAN style="font-size: 11.0pt;">Maybe some fine tuning needed but the answer is yes. Antennas will work for both .<BR /></SPAN></P><P><SPAN style="font-size: 11.0pt;">&nbsp;</SPAN></P><P><SPAN style="font-size: 11.0pt;">Hope that makes sense,</SPAN></P><P><BR />Have a great day,<BR />Kan</P><P></P><P>-----------------------------------------------------------------------------------------------------------------------<BR />Note: If this post answers your question, please click the Correct Answer button. Thank you!<BR />-----------------------------------------------------------------------------------------------------------------------</P></BODY></HTML> Fri, 24 Aug 2018 08:56:24 GMT https://community.nxp.com/t5/NFC/UCode-DNA-Chip-Impedance/m-p/847063#M4693 Kan_Li 2018-08-24T08:56:24Z Re: UCode DNA Chip Impedance https://community.nxp.com/t5/NFC/UCode-DNA-Chip-Impedance/m-p/847064#M4694 <HTML><HEAD></HEAD><BODY><P>Dear Kan</P><P></P><P>Thanks for your reply.</P><P></P><P>Regards</P><P>-Alan</P><P></P><P></P><P>*</P><P>*</P></BODY></HTML> Fri, 24 Aug 2018 19:06:56 GMT https://community.nxp.com/t5/NFC/UCode-DNA-Chip-Impedance/m-p/847064#M4694 alan_mak 2018-08-24T19:06:56Z