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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:ADuc824能否用于光电检测、对外围辅助电路有何具体要求
答: Yes, you just need an externakl TIA or LOG amplifier.

问:我需要在下载程序后脱机运行,为什么有时我的ADμC812一直保持在线调试状态?请问是什么原因?
答: You much pull PSEN high while power on or reset. At the same time, a Reset chip ADM810 should be used.

问:ADuC812片内有两个DAC,8路ADC,它们之间的串扰(CROSSTALK)性能如何?
答: No special spec, but it"s less than 12th bit for ADuC812.

问:请问,ADUC812在ADC采样时,采样频率可否随信号周期频率变化而适应变化?
答: No.

问:请问:1。片内的温度传感器的作用是什么?是对ADC变换精度的补偿吗?2。ADI公司有没有8BIT这样更便宜的产品?3。ADUC812有两个DAC输出,能否进行同步或非同步工作?
答: 1. It"s for temperature monitor, IE, to cool down the box.
2. No 8 bit microconverter. But we have a cheap one, ADuC814, it "s cheap than ADuC812. It"s also 12 bit A/D, but with only 28 Pins(Means less general I/O).
3. 可同步同时输出。

问:在讲座中引用的例子均为低功耗便携式仪器,请问在工业控制中microconverter有什么特点。
答: The Microconverter is industrial grade and integrate the serial functions like SPI/I2C and standard UART inside the chip..

问:ADI在光通信中有无大功率(200mW以上)连续功率输出的LD驱动芯片?有无自动功率控制(APC)?

答: Please contact our local sales office for more details @755-378-1959.

问:在ADμC812芯片进入在线调试或下载状态之后,PSEN引脚是否仍应通过1kΩ电阻接地?有这个必要吗?谢谢!
答: It"s necessary to use 1K resistor on the chip.

问:与其他单片机相比较,在并行I/O端口的使用是有什么不同吗?
答: the port 1 has only digital in or analog in. No digital out for port 1 (except p1.1 and p1.0). The other port same as MCU, but with other functions.

问:在设计中,aduc812的ad输入是小信号(<50mv)或信号接近5v时,adc的转换不是很稳定,请问,如何避免?在布pcb板,有哪些方面需要注意?
答: It will be affect by noise and the rail limit. Use a match resister net to attentuate down is a way. you can restore by software.
Please refer to the previous answer about PCB layout or cantact us directly.