Transmitting apparatus with source termination

A transmitting apparatus comprising:

• a transmitter driver to generate a differential mode signal superimposed on a common mode signal at a differential driver output of the transmitter driver, the differential driver output including a first driver output and a second driver output;
• a common mode choke to suppress common mode noise at the differential driver output;
• and
• a termination circuit at the differential driver output and being separate from the transmitter driver, the termination circuit coupled between the first driver output and the second driver output, the termination circuit comprising:
• a capacitor connected to a node;
• a first series circuit comprising a first resistor and a first inductive element coupled in series, one end of the first series circuit coupled to the node;
• and
• a second series circuit comprising a second resistor and a second inductive element coupled in series, one end of the second series circuit coupled to the node, the first driver output connected to a first input of the common mode choke and another end of the first series circuit, while the second driver output is connected to a second input of the common mode choke and another end of the second series circuit, the first inductive element and the second inductive element causing peaking in the differential mode signal at the differential driver output,
• wherein the first inductive element has an inductance L, the first resistor has a resistance R, and the common mode signal has a frequency fcm, wherein the inductance L, the resistance R and the frequency fcm satisfy the following equation:
• L
• <
• R
• 2
• ×
• π
• ×
• fcm
• ×
• 3
• .