US Patent 9210011 Push-pull source-series terminated transmitter apparatus and method

A transmitter, such as a voltage mode driver (VMD)-based push-pull source-series terminated (SST) transmitter, is provided that can consume less current as the amplitude of a voltage output is decreased. The transmitter includes a transmitter circuit having a first branch and a second branch. While the first branch is activated to send an analog output signal, the second branch is deactivated, and vice versa. One or more bit values of an input binary signal can be used to selectively activate and deactivate the first and second branches.