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PSOC4可以应用于热电偶测温装置吗?因为只有2个OP。我们需要用不同的模式来做样品。
以上来自于百度翻译 以下为原文 Can PSOC4 be applied in thermal couple temperature device? Because of there is only 2 OP. We need to do the sample with differenctial mode. |
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由于PSOC4中没有VDC,所以我们需要使用一个IDAC和一个OP作为参考电源。然后没有足够的OP放大样本信号。
以上来自于百度翻译 以下为原文 Due to there is no VDC in PSOC4, so we need to use one IDAC and one OP for reference power. And then the there is no enough OP to amply differencial samples signals. |
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HI贲江1)差模INS AMP可以由两个运放2做)你可以使用ADC模块目录,它有差分模式(但是当前模块不能改变增益)或者向这个ADC添加OP AMP怎么样?
以上来自于百度翻译 以下为原文 Hi Ben Jiang 1) Differential mode INS-Amp can made from two op amp 2) Can you use ADC module directory, It has the differential mode (however current module can't change the gain) Or add op amps to this ADC How about these? |
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SAR ADC具有差分模式,但是其输入缓冲器仅具有增益1、增益。
不支持PSoC 3/5中的控制。 如果你需要更多的增益,那么获得它的唯一方法是外部IA或外部opAMPS。 具有精确的R网络来设置增益,并且其精度(和OpAmp G)控制CMRR。 附上一些参考资料。 HTTP//www.类比 我有更多的参考资料,如果你给我发电子邮件地址,我可以提供。 瑞格哈德,Dana。 全面了解***CMRR—2012.PPT 2兆字节 以上来自于百度翻译 以下为原文 The SAR ADC has differential mode, however its input buffer has only a gain of 1, gain control as in PSOC 3/5 is not supported. If you need more gain, then athe only way to get it would be external IA or external OpAmps with precision R network to set gain, and its precision (and OpAmp G) control CMRR. Some reference material attached. http://www.analog.com/static/imported-files/design_handbooks/5812756674312778737Complete_In_Amp.pdf I have a lot more ref material, if you send me email address I can supply. Reghards, Dana. |
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嗨,Dana,
谢谢你的回复。你的意思是PSoC4不能应用热电偶单芯片解决方案吗? 并尝试用AMUX将采样模式从差模转换成单模。但共模干扰噪声过大,采样频率不高。 由于BOM成本低,电路简单,用户对我们的单芯片解决方案很感兴趣。也许应用程序不是目标字段。 当做, 本 以上来自于百度翻译 以下为原文 Hi Dana, Thank you for your reply. And your means that the PSOC4 cannot do the application of thermal couple one chip solution? And I have tried to change the sampling mode from differenctial mode to single mode with AMUX. But the common mode interfering noise is too big and the sample data is not good. And the customer is interesting our one chip solution because of the low BOM cost and simple circuit. Maybe the application is not the target filed for PSOC4. Regards, BEN |
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亲爱的Dana,
我尝试添加358(双通道OP)的PSoC4应用程序。但是我发现模拟总线不能在创建者内部路由。你能把你的电子邮件地址发给我吗?我会把项目配置发送给您,并帮助我路由它。 当做, 本 以上来自于百度翻译 以下为原文 Dear Dana, I have tried added a 358(two channel op) for PSOC4 application. But I found the analog bus cannot be routed internal in creator.Can you release your email address to me. And I will send the project configuration to you and help me to route it. Regards, BEN |
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你有2个OPAMPS外部,有任何想法使用4200部分?
现在,OPAP R网络必须保持1%。 SPEC中的通用模式(实际上您需要做更多) 彻底分析),并与2个OAS可能的成本相结合 使用4200的偏移成本。4200也允许SAR输入缓冲区 允许G高达16。 只是一个想法。 仍然在寻找路由,似乎你正在满足所有限制。 并出现了POIN问题,并不明显。 问候,Dana。 以上来自于百度翻译 以下为原文 You have 2 OpAmps external, any thought to using 4200 part ? Right now those OpAmp R networks have to be .1% to keep common mode in spec (actually you would need to do a more thorough analysis), and coupled with the cost of the 2 OAs might offset cost of using 4200. Also 4200 enables the SAR input buffer which allows G up to 16. Just a thought. Still looking at routing, seems like you are meeting all restrictions and comitted poin issues, not obvious. Regards, Dana. |
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问题,当你选择CH2(CH0CH4)时,你基本上是短的。
SAR DIFF输入一起,这是你想要的吗? 问候,Dana。 以上来自于百度翻译 以下为原文 Question, when you choose ch2 (of ch0 - ch4) you essentially short the SAR diff inputs together, is that what you intended ? Regards, Dana. |
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我会张贴一个案件,当我们看这个(如果你还没有这样做),
我也没有运气的路线。我已经掉了路,等等。 古怪的。 CyPress网站 “支持” “技术支持” “创建一个MyCase'” 问候,Dana。 以上来自于百度翻译 以下为原文 I would post a CASE while we look at this (if you have not already done so), I too am having no luck with routing. I have dropped paths, etc.., still something wacky. www.cypress.com “Support” “Technical Support” “Create a MyCase” Regards, Dana. |
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为什么PSoC4,因为你需要一个32位处理器来测量温度?
AN2226覆盖了具有近零外部部件的PSOC1中的热电偶测量。也有相同的技术PSOCS3.5版本。差分测量是连续的,利用相关双采样消除偏移和1/f噪声。 丹尼斯(塞浦路斯应用软件) 以上来自于百度翻译 以下为原文 Why PSoC4, because you needed a 32 bit processor to measure temperature? AN2226 covers thermocouple measurements in PSoC1 with near zero external parts. There are also PSoC3,5 versions with the same technique. The differential measurement is sequential, using correlated double sampling to eliminate offset and 1/f noise. ---- Dennis (Cypress apps) |
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