Patent ID: 6049201
Filing Date: 2000-04-11
Classification: G11C,H02M

Abstract:
A circuit configuration for a charge pump, comprising:a first series circuit of n integrators having a first integrator and a last integrator generating an output signal;a first feedback path and a second feedback path;one of said integrators of said first series circuit generating an output signal and receiving, as an input signal, a summation signal formed from said output signal of said one of said integrators of said first series circuit fed back via said first feedback path, a second input signal and a third input signal;a second series circuit of n further integrators having a first integrator and a last integrator generating an output signal;a further first feedback path and a further second feedback path;one of said integrators of said second series circuit generating an output signal and receiving, as an input signal, a summation signal formed from said output signal of said one of said integrators of said second series circuit fed back via said further first feedback path, a second input signal and a third input signal;said output signal of said one of said integrators of said second series circuit fed back via said second feedback path forming said second input signal of said one of said integrators of said first series circuit;said output signal of said one of said integrators of said first series circuit fed back via said further second feedback path forming said second input signal of said one of said integrators of said second series circuit;said output signal of said last integrator of said second series circuit forming said third input signal of said one of said integrators corresponding to said first integrator of said first series circuit;said output signal of said last integrator of said first series circuit supplying said third input signal of said one of said integrators corresponding to said first integrator of said second series circuit;said third input signal for remaining integrators of said first series circuit supplied by an output signal of a preceding integrator of said integrators of said first series circuit;said third input signal for remaining integrators of said second series circuit supplied by an output signal of a preceding integrator of said integrators of said second series circuit; andsaid integrators of said first series circuit and said second series circuit having outputs that can be picked off outputting output signals phase-shifted with respect to one another.