Whether DS25BR110 output can DC couple to CML input? From datasheet below and Figure 10. Typical DS25BR110 Output DC-Coupled Interface to an LVDS, CML or LVPECL Receiver, it assumes that the receivers have high impedance inputs, but our chip CML input has 50ohm internal termination, the CML input has 50ohm resistor to bias supply 1.05V, whether it can work with DC couple? We may change to AC couple next phase, but currently the board has been fixed.
OUTPUT INTERFACING
The DS25BR110 outputs signals compliant to the LVDS standard. It can be DC-coupled to most common differential receivers. The following figure illustrates typical DC-coupled interface to common differential receivers and assumes that the receivers have high impedance inputs. While most differential receivers have a common mode input range that can accommodate LVDS compliant signals, it is recommended to check the respective receiver's datasheet prior to implementing the suggested interface implementation.
