I am using the AD9910 DDS.
My concern is the matching needed for 100Ω differential impedance of my circuit after the AD9910 DAC output.
- Can you please advise the most efficient (small as possible) way to match the DDS to 100Ω differential, over the 10-500MHz freq. range ?
- Currently, I am not using any kind of transformer at the output (see attached picture below). I use two resistors for matching.
Can you please advice whether this concept is good? Is there any additional resistor/other values of the existing resistors that I should place/change for better performance ?