需要解决的几个问题
1)全局属性,OpAmp Bias和ANANOLL缓冲器属性都设置为低功耗,
正弦波失真。这些应该设置为高功率。
2)由于缓冲器不是R R,所以当接近任一个时,它会加剧DAC输出的失真。
钢轨。也许一个注释应该添加到AP注释中。
3)作为一个练习,为了消除2中的失真,我增加了一个PGA,设置它的G & lt;1,以获得波形。
从轨道上,会出现一个高度扭曲的波形,?不知道为什么。
注意:在所有观测中,仅用10m范围探头加载缓冲器,可能在2的情况下加载高负载。
可能会改善输出失真?
PSoC设计师5.4
问候,Dana。
以上来自于百度翻译
以下为原文
A couple of issues that need addressing -
1) Global proper
ties, the OpAmp Bias and Ananlog Buffer properties both were set to low power,
so sine wave distorted. Those should be set to high power.
2) Because the A Buffer is not R-R, its exacerbates the distortion of the DAC output when close to either
rail. Maybe a note should be added to ap note covering this.
3) As an exercise, to eliminate the distortion in 2), I added a PGA, set its G < 1, to get waveform away
from rails, and woulnd up with a highly distorted waveform, ? Not sure why.
Note A Buffer was only loaded with 10M scope probe in all observations, maybe in case of 2) high load
might actually improve output distortion.....?
PSOC Designer 5.4
Regards, Dana.