AD9102 - DAC CONSTANT issue

Question

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

JMMina · Accepted Answer

Hi RubenEDERY , 
 Please see the Power Supply Notes section in Page 28 of Rev B datasheet. Also, since you are generating DC the output datapath must be free from any components that might filter it out (such as baluns, etc.). C507 might be filtering out the DC value. Better to use an Op-amp configuration like in the AD9102 Evaluation Board Schematic (Rev B) for DC signal output. 
 
 Best regards, Marco)

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AD9102 - DAC CONSTANT issue