AD9858: FAQ

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AD9858: EVB VCO datasheet

Question We have recently purchased the translational evaluation board for AD9858 (AD9858/TLPCBZ), Rev B. The VCO which has been mounted on the board is obsolete and I couldn't find the datasheet for…
AD9858: Output frequency change

Question Is it possible to change the output frequency by updating only the lowest bytes (8 bit or 2x8 bit)of the 32 bit frequency register or do you have to update all bytes even if there is no changes…
Ad9858: Reading data back

Question Looking into executing readback from this device. Is the data readback from the Buffer or Register memory? Can the device output be disabled for the entirety of the readback, if so how? Regarding…
AD9858_unused input pins connection

Question I need your assistance with my DDS board, I have a DDS board with AD9858 chip, and I'm only going to use the AD9858 chip with some pin's, but I don't know how to connect the rest unused Pins…
AD9858_unused power pins connection and saving power measures

Question I am using AD9858, and he haven't use the internal PFD and Mixer. So he powered down PFD and Mixer by Software, the power consumption is decreased, and he measured the chip's surface temperature…

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