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AD9833  power on problem

Question asked by StevenWen on Jun 29, 2011
Latest reply on Jun 29, 2011 by LiamR

I used 12Mhz as reference clock and followed the AN1070 to send the command. But the IC didn’t output the clock. It  remind at high level. The IC need to wait 5 minutes to start output clock. After IC started to output clock, I could use the command to change the frequency.  Here is more information about my setup. Does anybody help to figure it out?

 

Power: 5V

Reference clock:12Mhz

Initialization Command  : 0x2100,0x4444,0x4111,0xc000,0x2000, expect to have 200khz

MCU: ATmega64 (ATMEL)

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