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A problem of SPI when using the AD5292

Question asked by liang on Sep 13, 2011
Latest reply on Sep 20, 2011 by liang


When I am using the AD5292, the voltage of terminal A here is 5V

after  the commond  0x1802,0x0500,0x8001,0x0000,0x0800,0x0000,

the output is right (1.25V), but when i measured the waveform  of DIN SDO,CLK,

the output of SDO is 0x10, whatever value i write to RDAC ,the output is the same ,others are all right,could you help me ?

I have  added  pull-up resistor (1K)to SDO.