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some problems about AD9824

After configerating register through SPI .The problem comes out, the input is a 1.5V DC voltage,But the output is not zero.This problem has bothered me for a long time.In thoery, the output is zero when the input is DC voltage. So i hope someone can help me to solve this problem.

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  • hi:

              i have a question to ask you,when i write the register single,i read the register ,the write date and the read date is ok  ,but when i configure the operation register ,Control register ,VGA register ,PXGA register ,i found  i read the date is not equal to the wirte date,i can not understand,thanks for your help.

             now ,the ccd works well,i want to konw why the read and write date is not equal.thanks for your help.

             i use the AD9816 ,AD9824,the read and write date is equal.

             fiuure 1: write and read register

             figure 2 :continous configer the register

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  • hi:

              i have a question to ask you,when i write the register single,i read the register ,the write date and the read date is ok  ,but when i configure the operation register ,Control register ,VGA register ,PXGA register ,i found  i read the date is not equal to the wirte date,i can not understand,thanks for your help.

             now ,the ccd works well,i want to konw why the read and write date is not equal.thanks for your help.

             i use the AD9816 ,AD9824,the read and write date is equal.

             fiuure 1: write and read register

             figure 2 :continous configer the register

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