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AD9102 - DAC CONSTANT issue

Category: Hardware
Product Number: AD9102

I am working with AD9102 but i am unable to see a DC current level at the output (DC CONSTANT mode). It seems that only Wave_CONFIG, address 0x27 and DAC_CST, address 0x31 needs to be configured but nothing goes out. 

SPI works good

Here is configuration:

SPICONFIG Reg 0x00 : 0x0000

WAV_CONFIG Reg0x27 : 0x0001

DAC_CST Reg 0x31 : 0xA300

See schematics attached 

Thanks

Parents Reply
  • Hello Marco,

    I strapped together DVDD=DLDO1=DLDO2=1.8V and CLKVDD=CLDO=1.8V  and configure Register Adress 0x01 at value 0x01C7 as requested.

    The DAC output Start at midrange (550mV) with the resistor of 275 ohms. I removed C507 to try. There is no effect on the DAC ouput by changing the DAC_CST register. 

    Any devices will be welcome. 

    Thanks 

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