I am interfacing the Evaluation board Demo 2459A-C with IC LTC 1668, with FPGA. I am generating the frequency 455KHz but it generates harmonics along with this frequency. Is there any interfacing issue or I have to kill the harmonics myself after the output of this DAC ?
Someone is currently looking into this request and will respond as soon as possible.
What levels are the harmonics at?
They are at the same level as the carrier is. 15dBm
What sample rate are you using?