correction for above: I found the input impedances (AD9681 datasheet and product info | Octal, 14-Bit, 125 MSPS, Serial LVDS, 1.8 V Analog-to-Digital Converter | Analog to …)
My general questions however remain:
- is the ADL5566 a good choice or does anyone have a better option?
- do you know of a similarly performing diff driver that also handles loads of 70..100 ohms without harmonic distortions?
- what kind of ADCs are in the AD9681 (I assume its a stackup of two quad ADCs as it can not be selected in the ADsimADC - Analog Devices: Design Tools: ADIsimADC Web)
- How can I use the provided ADsimADC file on the part info page? Is there an offline version for ADsimADC and if so where?
- any other input