SBOS710D October 2014 – February 2018 LMH5401
The standard EVM is used with RCM+ and RCM– removed and a new resistor installed at RTCM = 49.9 Ω. The
49.9-Ω resistor is placed at C17 on the EVM schematic. A network analyzer is connected to the VCM input of the EVM and the EVM outputs are connected to the network analyzer with 50-Ω coaxial cables. Set the network analyzer analysis settings to single-ended input and differential output. Measure the output common-mode with respect to the single-ended input (Scs21). The input signal frequency is swept with the signal level set for
100 mV (–16 dBm). Note that the common-mode control circuit gain is one.