FAQ
Hello ADI support,
I plan to use the AD7888 to sample dc voltages. I will use the internal 2.5V reference. I see on the data sheet that the analog input range is 0 to Vref volts. My minimum dc input voltage to the AD7888 will be 25mV. With a proper PCB…
Hi,
Sorry for missing this item. I know this is long-overdue. However, we are clearing up some open items as others may find this useful.
I noticed this similar thread in Student Zone. I hope this query already answered by this thread.
Hi team,
I am working on a project where I need to interface AD7888 with a micro-controller (I am using MSP430F6736).
The MCU has a SPI interface. Could anyone help me out with the steps from where I need to start and what steps do I need to follow…
Hi,
I have a problem using AD7888 with ATmega324PA.
I am measuring sine voltages f=50Hz, so T= 20ms on 6 channels, 7 and 8 AIN are connected to GND
SPI frequency is 125kHz and SPI mode is 3.
What happens is that from time to time I get one spike…
I see there is linux kernel driver support for the ad7887, but the very similar ad7888 does not seem to have a driver anywhere. Can I use the same driver? Can I read all 8 channels using this driver, since the 7887 is only a 2 channel device?
想用D7888采样几路电源电压,这几路电压分别为,1.8V,3.3V,24V,想用电阻分压,不知多大电阻合适。原来设计的是1M,实际来看,很不理想。想知道AD7888的输入阻抗有多大?自身是否带跟随器?
各位工程师,我在做AD7888实验时使用的是单片机控制AD7888的转换。端口定义在P0.0-P0.3。Measure函数就是AD7888的输入和输出函数,函数简单。Main函数就是把转换出来的值给发出来。很简单的测试程序就是出不来。请各位工程师帮忙看下。
附上程序:
#include<reg51.h>
#include<intrins.h>
#define uint unsigned int
#define uchar unsigned char
sbit…