ads1601推荐的处理器是DSP,我用stm32行吗?
VIMD是中点电压,想问下这个脚有什么作用啊?可能是我自己看的不太仔细
The digital outputs from the device should always be
buffered. This will have a number of benefits: it will reduce
the loading of the internal digital buffers, which decreases
noise generated within the device, and it will also reduce
device power consumption.
上面这段文字说最好用缓冲器,我想问下,用什么做缓冲器比较好
Wanda WANG:
1. 数字接口,用STM32没问题。
2. VMID 是需要外加2.5V电压的,内部调制器用。
3. 加个逻辑buffer,可以参考EVM上用的SN74AHC541。
Guoliang Li:
虽然datasheet ELECTRICAL CHARACTERISTICS里面没有列出serial port的驱动能力,但带的device只有一个STM32而且走线不太长不加buffer也应该可以。