标题: no datas can be read from ad7730 [打印本页] 作者: siyymdzna@sina. 时间: 2003-8-28 22:34 标题: no datas can be read from ad7730
we use ad7730 in our weigh scale design,
the DOUT pin remain high all the time,
even when we try to read the Status Register with 2051.
we have checked the following pins ,
can not find out what is wrong with it.
AVDD 5V
DVDD 5V
DGND 0V
AGND 0V
REF IN (+) 2.5V (CONNECTED TO AD780)
REF IN (-) : AGND
POL ,SYNC ,RESET 5V
CS 0V
MCLK IN /MCLK OUT 4.9152HZ
AIN2(+) ,AIN2(-) ,ACX,ACX(---) :AGND
VBIAS connect to AGND vias a capacitance
I will really appreciate it if you can help us with the problem.
