While giving Differential input to the ADC Part No-AD7688,what are the input conditons need to take care.Please send me if you are having reference design.
最近用AD7688采集数据,可是采集到的信号却没有峰值,如下图所示:
峰值处好像饱和了一样,请问有原因造成的。我的信号是1000Hz,采样频率是16K。
Hi,
VIO range is 1.8V to Vdd, but Timing Specification is guaranteed with 2.3V to 5.5V or VDD+0.3 V. Please refer to Page5.
Can you guaranteed with 1.8V to Vdd? If not, please let me know about the below specification with VIO=1.8V.
- tSCK
- tDSD…
Hi
We're facing a issue that the analog input is instability below.
CH4 is IN+. CH3 is SDO.
Actually the driver amp is OPA197 (Ti), we recommend ADA4084-1 instead of Ti.
But the customer say if the instability is not improved within this week, he may…
Hello,
I have a question from our customer about AD7688 ENOB performance.
In the datasheet page-4, the vref input voltage range is described as 0.5V to VDD+0.3V.
Our customer is going to use 1.0V for vref voltage.
And they needs 14bit ENOB in this…
最近在用AD7688调试采样电路,用的是SPI串口通讯,信号时100Hz正弦波,把采样率设置在12800Hz,但是采集到的信号在峰值处是饱和形式的,如下图所示。
我的电路原理图如下图:
请问是采样率的原因吗,我试过其他额采样率,要么也是这种情况,要么采集的数据不对。请问有哪些可能的原因。
谢谢。
I have a question from a customer about timing parameter of AD7688.
The VIO range is described as 1.8V to Vdd+0.3 in page4 of the datasheet.
But "specified performnace" range is 2.3V to Vdd+0.3V.
Our customer wants to know the I/O…
大家好,最近在调试AD7688这款ADC,现在遇到的问题是时钟线一直都是高电平状态,数据无法发送,请问有什么可能的原因造成的,谢谢?