FAST SETTLING MIXED SIGNAL PHASE INTERPOLATOR WITH INTEGRATED DUTY CYCLE CORRECTION

摘要

Described is an apparatus which comprises: a current steering digital-to-analog converter (DAC) to receive a digital bus to control current steering; a switch capacitor network to integrate currents from the DAC, the switch capacitor network having switches which are controllable by a plurality of digital clock signals; an output stage to compare the integrated currents against at least two threshold voltages and to generate an output signal; and a duty cycle corrector (DCC) operable to adjust the at least two threshold voltages to modify duty cycle of the output signal.

主权项

1. An apparatus comprising:
a current steering digital-to-analog converter (DAC) to receive a digital bus to control current steering; a plurality of switches each of which is controllable by a clock signal and each of which is coupled to the DAC, the plurality of switches are operable to provide a first current and a second current; an integrator which is operable to be reset, the integrator coupled to the plurality of switches; and an output stage coupled to the integrator to provide rising and falling edges of an output signal.