AD 9172 DAC output is connected to transformer TCM1-83X+. It is 1:1 transformer.
DAC data sheet says that DAC output has 100 Ohm impedance.
Should the transformer be 2:1 transformer?
What is the max DAC sampling that can be achieved in 1x bypass mode with single-link mode 20?
What is single-link mode and dual-link mode? I did not find any explanation for that.
Can someone answer this please? My main question is regarding transformer. Please answer that.
apologies for the delay, this must have slipped in the system..
You are correct. The AD9172 output has a 100ohm diff resistance at DC. so below ~2GHz, the output would infact measure near 100ohm diff. But above 2GHz, the output is close to a 60ohm impedance. So a 1:1 balun is better in terms of impedance matching.
single-link implies a single JESD204B link. dual-link implies two JESD204B links to the same AD9172 device.