数模混合信号前端的系统分割考虑ADI

简介：

问：系统分割中的模拟电源和数字电源如何考虑?两者之间是否要加滤波?滤波器如何设计?
答： You"d better use seperate power supply. But for some cases, it"s permitted to use single for both analog and digital, then a ferrite-bead between them is ok.

问：在AD转换中，参考电压能不能大于供电电压?
答： Most part can not, but some can. For example,
AD7943/AD7945/AD7948: +3.3 V/+5 V Multiplying 12-Bit DACs. VDD = +4.5 V to +5.5 V;  VREF = +10 V.
Normally use can use an higer external voltage refence to extend the inner voltage referece.

问：在GPS中，前端的低噪声放大器不知道贵公司有什么样的产品？
答： We have the GPS total solution. Please contact ADI for detailed information, you can call the toll-free number 800 810 1742, or write to china.support@analog.com

问：能否详细叙述一下验证或仿真分割的正确性和有效性的四中方法
答： Generally speaking, unless volume is extremely high and changes are extremely unlikely, smart partioning is the lowest cost solution. This is especially true when analog performance is important. Integrated SOC solutions have very high development cost and

问：分割中对增益和动态范围有何考虑?动态范围要留有多大的富余度?
答： This is decided by the system requirement. If you want to discuss this, please call 800 810 1742 after the seminar.

问：请问ADI有没有百兆级的混频器？请说明型号？
答： AD8343. Please go to the www.analog.com to download its datasheet

问：能否给出PCB中模拟和数字信号的布线设计一般规则?
答： Please refer to previous questions and answers.

问：AD放大器产品目前有那些种类？
答： ADI的放大器有很多种类，像电流反馈型和电压反馈型的告诉运放，仪表放大器，各种精密放大器，斩波放大器，隔离放大器等等，具体 的请登陆我们的网站。

问：对高速采样的AD73360，在EMC上有何建议，
答： It"s seems that you need call 800 810 1742 to discuss.

问：ADV7183A VIDEO 和ADSO-BF532及ADV7171 VIDEO DECODER这三种的芯片资料和典型的应运、原理图（或者DEMO）在哪里能找到？
谢谢！
答： Please contact 800 810 1742 or email to china.support@analog.com