Patent ID: 7236029
Filing Date: 2007-06-26
Classification: H03K

Abstract:
1. A flip-flop circuit arrangement, comprising: a pair of input terminals designed for feeding in a differential clock signal (CLKP, CLKN); a pair of output terminals designed for tapping off a differential output signal (OUTP, OUTN); a master holding stage coupled to a master differential stage; a slave holding stage coupled to a slave differential stage; wherein the master differential stage, the master holding stage, the slave differential stage and the slave holding stage are coupled to one another in order to form a flip-flop structure; wherein the pair of output terminals is formed at the output of the slave differential stage; wherein, at a symmetrical base point, a current terminal of the master differential stage, a current terminal of the master holding stage, a current terminal of the slave differential stage and a current terminal of the slave holding stage are connected to one another and to respective current sources for feeding the master and slave differential and holding stages; a means for providing a compensation current which is coupled to the pair of input terminals and to the symmetrical base point in order to compensate for the current provided by at least one of the current sources in a manner dependent on the differential clock signal (CLKP, CLKN); wherein inputs of the slave differential stage are coupled to outputs of the master differential stage in a noninverting manner, and inputs of the master differential stage are coupled to outputs of the slave differential stage in an inverting manner; and wherein the means for providing the compensation current comprises at least one of; at least one compensation current source, which is selectively connected to one of two terminals of the symmetrical base point via a switching means, the switching means being coupled to the pair of input terminals for driving the switching means, and two capacitors connected between a different one of the pair of input terminals and the symmetrical base point.