comparison between dpll,spll,lpll and adpll

hi all
i want advantages and disadvantages of dpll,spll,lpll and adpll
or any link related to this

mm , this topic is soo long , and very interesting

the DPLL : digital PLL is the where some blocks are digital and some are analog " the PFD , the divider " digital and the CP and the VCO and the loop filter are analog , the most commonly

the LPLL is all analog one , even the phase detctor is a multiplier "something like gilbert cell" ,

ADPLL : is the All digital , everything is digital the loop filter the VCO the dividers

this is still limited to low frequency , and the architectures of it , still immature and need to be more studied in the Z domain

khouly