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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:ad的微处理器可重复写多少次?编程器是专门的吗?如不是,目前有哪几个品牌获许可举行编程?
我曾经用过ad的ad7705,是双通道的,可是芯片内部两路好像不完全隔离,读数总有问题,是何缘故?

答: 100K cycles endurance Flash/EE , 100 years ratantion.
你可以通过串口编程,不过只要有下载程序,下载线自制也可。所有第三方8051编译器都可用。
使用问题,在两通道输入时就要考虑通道隔离。

问:微转换器中的FLASH有没有安全密码以防止误操作而丢失数据?如何操作?
答: 有保密位防止别人读程序, Flash 数据掉电后也不会丢。但编程错误导致数据丢失无法避免。

问:ADuC824中有主ADC(24BIT)和辅ADC(16BIT),它们使用上有何差别?
答: The 24 bit A/D has a PGA but 16 bit A/D has none. You can set different input ways (unipoler or bipoler) and different input voltage range for the main A/D.

问:他对嵌入系统和普通的工控机的应用有好处吗?
答: ADuC812/14/16/24 is very suitable for embed system and hand hold measure system. It can be used as the smart sensor part of the industry computer via serial port.

问:1.ADuC812能外接存储器吗?容量有多大?接口有特殊的要求吗?
2.ADuC812的输入阻抗有多高?可以直接接到高阻抗的模拟信号源?

答: 1. You can extent to 16M. It"s easy to extent following the datasheet.
2. The input leakage current is about 10uA. If you source impendent is very high, you can use a JFET input AMP such as AD711/AD8510/AD8610.

问:为了使ADC工作在最佳状态,需要经常进行校准,请问周期是多少?如何进行?在什么情况下特别需要校准?有没有进行自动校准的软件?
答: It according to you need. It very useful to caliberate for very high resolution AD in ADuC824, it can remove temperature drift. ADuC824 can performance auto caliberation if you set SFR.

问:为什么先生多次提到要使用ADM810?它与片内的WDT和复位系统各自如何分工?
答: Watch Dog is supervisor the CUP is working or not.
ADM810 is very useful for avoid problems caused by power on.
No ADM810 need when use ADuC814/831/834.

问:ADUC812片内温度传感器的精度如何?
答: -3.0mV/degree C.

问:在测量微小信号时(指信号强度与ADUC81X噪音强度相似或更小),有什么方法可以解决?ADUC81X内部有运放吗?是否将噪音同等放大?
答: There is PGA in ADuC816 and ADuC824, it will not ampify noise. you can use AD621/623/629/8551 ...  to amplifier signal before ADuC812.

问:我的项目应用环境干扰特别大,请问微转换器的抗干扰性能如何?是否适合工业环境。
答: ADuC series products integrate MCU, Flash, DAC/ADC and other ports in single chip. Therefore it has good interference rejection. It"s used broadly for industry control. However, if your using enviroment is very very hard, then you need to verify with