You need to use EasyEDA editor to create some projects before publishing
Replace 2 components
501 7
tescojim 2 years ago
Hi, Im trying to build a custom IO board for CM4. Currently I use two ICs: *  TPD2EUSB30DRTR (ESD protection diode for my micro USB connector) *  NC7WZ16P6X (dual buffer for my audio output) My problem is that I solder them and although I use microscope they are rather difficult to solder as they are very very tiny. Can anyone recommend an alternative to these parts which are widely available and not that tiny? My IO board contains SMD parts. Thanks
Comments
andyfierman 2 years ago
Not enough info to make an informed choice. Questions: TPD2EUSB30DRTR: What data rate are you working at? What version of USB (3 or lower)? NC7WZ16P6X: What frequency or data rate is the "audio" output? What load do you have to drive? (Impedance/power/current/voltage swing?) Are you driving the load differentially (using 2 devices to make a bridge output)?
Reply
andyfierman 2 years ago
Could you not get JLCPCB to assemble your PCBs?
Reply
tescojim 2 years ago
JLCPCB to assemble? JLCPCB dont have most parts in stock. They all seem basic parts that are used on official CM4 IO board. Most parts, connectors are out of stock (eg. DF40C-100DS-0.4V(51))  If I try to find something else then MOQ is 50 or 100. I had to source my parts on my own as JLCPCB wasn't much of a help. USB doesnt have to be 3.0 I think they have just basic outputs. Same what CM4 IO board has. ![Snap2000003581.jpg](//image.easyeda.com/pullimage/lygJZHf8xsaxPXZGYvm5lmlSvNdr2pnH9VOeAWtF.jpeg) ![Snap2000003580.jpg](//image.easyeda.com/pullimage/oMrtZ7cMVQfbMPh1ZGwNge3YbGIPvLkBs7iyrsqG.jpeg)
Reply
andyfierman 2 years ago
@tescojim, "Same what CM4 IO board has." As stated in: [https://easyeda.com/forum/topic/How-to-ask-for-help-and-get-an-answer-71b17a40d15442349eaecbfae083e46a](https://easyeda.com/forum/topic/How-to-ask-for-help-and-get-an-answer-71b17a40d15442349eaecbfae083e46a)<br> <br> please don't assume that everyone knows what a "CM4 IO board" is. Please provide enough information for people to understand the issues and the context so that they can help you without having to spend an hour or so looking for datasheets and device specs..
Reply
andyfierman 2 years ago
@tescojim, **Alternative to TPD2EUSB30DRTR:** USBLC6-2: SOT23-6 [https://www.st.com/resource/en/datasheet/usblc6-2.pdf](https://www.st.com/resource/en/datasheet/usblc6-2.pdf)<br> <br> Note however that the TPD2EUSB30DRTR is intended for use with a 5V supply. The TPD2EUSB30**A**DRTR has a 4V zener voltage compared to the TPD2EUSB30DRTR (and hence the USBLC6-2) 6V breakdown. <br> **Alternative to NC7WZ16P6X:** SN74LVC2G34DBV: SOT23-6 [https://www.ti.com/product/SN74LVC2G34](https://www.ti.com/product/SN74LVC2G34?utm_source=google&utm_medium=cpc&utm_campaign=asc-null-null-GPN_EN-cpc-pf-google-eu&utm_content=SN74LVC2G34&ds_k=SN74LVC2G34&DCM=yes&gclid=Cj0KCQjwhLKUBhDiARIsAMaTLnEOhAfukAvtZuuTiD4jS_ZJjG9M8C0WaYx4RTtHv8Pw4vLpN-U9z9QaAtT4EALw_wcB&gclsrc=aw.ds)<br> <br> What are you using the NC7WZ16P6X since you appear to only be using one of it's channels?
Reply
tescojim 2 years ago
Im sorry for not clarifying the specifications of CM4 IO. I use one one channel for a mono speaker. Unfortunately I haven't been able to figure out how to connect a single channel to CM4. (Im not familiar with electronic engineering.) I found a schematic online and tried to add it to my circuitry. I dont quite know hoe these parts work. :(
Reply
andyfierman 2 years ago
@tescojim, So if you can post a link to info about whatever this CM4 IO board is and some more background (a short Design Requirements Spec and a clarification of what you want to achieve) then maybe others can offer you more advice to help you. :)
Reply
Login or Register to add a comment
goToTop
你现在访问的是EasyEDA海外版,建议访问速度更快的国内版 https://lceda.cn(需要重新注册)
如果需要转移工程请在个人中心 - 工程 - 工程高级设置 - 下载工程,下载后在https://lceda.cn/editor 打开保存即可。
有问题联系QQ 3001956291 不再提醒
svg-battery svg-battery-wifi svg-books svg-more svg-paste svg-pencil svg-plant svg-ruler svg-share svg-user svg-logo-cn svg-double-arrow -mockplus- -mockplus- -mockplus- -mockplus- -mockplus- -mockplus- -mockplus- -mockplus-@1x -mockplus-

Cookie Notice

Our website uses essential cookies to help us ensure that it is working as expected, and uses optional analytics cookies to offer you a better browsing experience. To find out more, read our Cookie Notice