Apparatuses and methods for changing signal path delay of a signal path responsive to changes in power

An apparatus, comprising:

• a signal path having a signal path delay and configured to receive an input signal at an input and to provide an output signal at an output responsive thereto, the signal path including a plurality of signal driver circuits coupled in series, an input of a first signal driver circuit of the plurality of signal driver circuits coupled to the input of the signal path, and an output of a second signal driver circuit of the plurality of signal driver circuits coupled to the output of the signal path;
• an adjustable path delay circuit having an input coupled to the input of the signal path and further having an output coupled to the output of the signal path, the adjustable path delay circuit configured to provide a mixing signal to the output of the signal path, the mixing signal having an adjustable delay relative to the input signal;
• and
• a bias circuit configured to provide bias signals to the adjustable path delay circuit to cause the adjustable delay to change responsive to changes in power provided to the signal path.

A method, comprising:

• propagating a signal through a delay line circuit to provide a delayed signal, wherein the delay line includes a plurality of signal driver circuits coupled in series, a first signal driver circuit of the plurality of signal driver circuits having an input coupled to an input of the delay line and a second signal driver circuit of the plurality of signal driver circuits having an output coupled to an output of the delay line;
• decreasing a transition time of a mixing signal responsive to a decrease in power provided to the delay line circuit, wherein the mixing signal is based on the signal and the mixing signal is provided by an adjustable path delay circuit to the output of the second signal driver circuit;
• increasing the transition time of the mixing signal responsive to an increase in power provided to the delay line circuit;
• and
• mixing the mixing signal with the delayed signal at the output of the second signal driver circuit to provide an output signal.