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ADI 微转换器突破性的技术ADI

简介:ADI 微转换器突破性的技术

问:ADuC812中没有低通滤波器和功率增益调试功能,请问如何外接这两种功能?能否给出明确的要求,比如接口阻抗和电平,滤波器的带宽,带外衰减度等?

答: Normally, no filter is needed for ADuC812 output, as its work frequency is not so high. If you"ve specail consideration, please contact ADI local office for further help.

问:请问MicroConverter是否会有支持接口的产品
答: At present ADuC serials support SPI, I2C, UART.

问:微转换器的抗干扰性能如何?
答: As ADuC integrate MCU, A/D, D/A, Flash on one chip, optimised connection between different parts is realized in factory. Therefore it can bring convenience to user, and with good performance for interference rejection. Also the digital and analog power sup

问:ADmC812能使用外部电压基准源吗?
答: Yes, For the high precision application.

问:在硬件CONVST模式下,ADmC812的孔径延迟是什么?孔径误差我能预知吗?
答: Determind by your clock system. Could you contact us later?

问:我要用ADmC812的内部电压基准源,我应如何使用VREF和CREF 引脚?
答: You just need to decoupling those two pins with 0.1uF respectively is O.K.

问:在使用ADUC812时,电路设计应注意哪些问题?因为我们在使用过程中,发现 有时ADUC812和模拟电路互相干扰,AD采集管脚有较大的脉冲干扰,还有FLASH中 的数据不稳定,甚至发生ADUC812工作不正常现象,如无法下载代码,或在运行情 况下也可以下载程序代码。
答: Good question. First, you should pay attention to the EMC/EMI design while SCH and PCB design.
1。模拟电源与数字电源分开使用, 或用磁珠/电感加电容组成滤波电路防止电源串扰。每个芯片电源脚都加0.1uF退耦电容。
2。注意布局。模拟信号与数字信号分开/分区, 不要缠绕。
3。接地非常重要。用4层板,一层全做地较好。
4。加复位电路ADM810.
5。输入输出隔离。与外界数

问:我需要为ADmC812提供一个外部复位电路吗?谢谢
答: Yes, You can use ADM809/810 as the reset chip. But for in the next generation chip, like ADuC814/31/34 all have the on-chip reset circuits.

问:如果ADmC812在还没有完成一次转换的期间,接收到第二个CONVST触发信号(软件SCONV,定时器2触发,或硬件CONVST触发),会产生什么结果?
答: 数据回丢失.

问:相对cygnal公司的C8051Fxxx系列产品的优良特性(比如JTAG调试端口、20MIPS51内核、2UART等),ADI在产品研发上有哪些应对措施?
答: We have very good A/D and D/A inside the chip, very suitablel for control and monitor. And we will provide 62k Flash in ADuC831/832/834( The UART is enhanced in this chips). And we will cut down instruction cycle from 12 to 2 in the future. And we may deve