  The compatibility between the QCD analytic invariant charge and chiral
symmetry breaking is examined in detail. The coupling in question incorporates
asymptotic freedom and infrared enhancement into a single expression, and
contains only one adjustable parameter with dimension of mass. When inserted
into the standard form of the quark gap-equation it gives rise to solutions
displaying singular confining behavior at the origin. By relating these
solutions to the pion decay constant, a rough estimate of about 880 MeV is
obtained for the aforementioned mass-scale.
