Patent ID: 8786338

Claim:
An apparatus comprising: a delay line having an input terminal, a control input terminal, a first control output terminal, a second control output terminal, and a plurality of taps, wherein the delay line is configured to receive a first pulse having a first width at its input terminal, and wherein the delay line is configured to output a first delayed pulse through the first control output terminal, and wherein the delay line is configured to output a second delayed pulse through the second control output terminal, and wherein each tap is configured to output a second pulse having a second width in response to the first pulse, and wherein the first width is greater than the second width; a phase/frequency detector (PFD) that is coupled the first control output terminal and the second control output terminal so as to receive the first and second delayed pulses; a charge pump that is coupled to the PFD; and a filter that is coupled to the charge pump and the control terminal of the delay line.