hi,
recently i simulate silva-steensgaard's wideband low distrotion delta-sigma topology
(understanding Delta-sigma data converters,ch3.4.2)
and find there exist input signal component  at the first and second integrator output!
but it should not happend with this topology,
do somebody kindly who familiar with dsm can tell me what wrong with my simulation?

i put structure figure/simulation result/simulink file  in silva-dsm.rar