yashar
Junior Member level 2
mc145152
Hello dear friends:
I decide to build a VHF synthesizer (210 Mhz to 270 Mhz) using MC145152-2 & a minicircuits POS400 VCO (0 to 16v tuning voltage). I have been studying about the integer-n synthesizers and different types of loop filters used in plls for a while. but I still have some problems with the MC145152 & I will really appreciate it if you help me with them.
1.Are the output pulses of phase detector of MC145152-2 (Φv & Φr) current pulses or volatage pulses & are they the outputs of a charge pump or not?
2.How should I consider the transfer function of MC145152 phase detector in my calculations?
3.How should I design my active first or second order loop filter based on this two output phase detector (Φv & Φr of MC145152) & how will be its transfer function form (Vo(s)/Vi(s) or Vo(s)/Ii(s))?
4.Is there any online tutorial about designing synthesizers with MC145152 or any tutorial about designing loop filters for phase detectors like the one in MC145152?
5.Is there any software that I can use to design a loop filter based on the specific charecteristics of my synthesizer & VCO?
Thank you very much for your answers.
Hello dear friends:
I decide to build a VHF synthesizer (210 Mhz to 270 Mhz) using MC145152-2 & a minicircuits POS400 VCO (0 to 16v tuning voltage). I have been studying about the integer-n synthesizers and different types of loop filters used in plls for a while. but I still have some problems with the MC145152 & I will really appreciate it if you help me with them.
1.Are the output pulses of phase detector of MC145152-2 (Φv & Φr) current pulses or volatage pulses & are they the outputs of a charge pump or not?
2.How should I consider the transfer function of MC145152 phase detector in my calculations?
3.How should I design my active first or second order loop filter based on this two output phase detector (Φv & Φr of MC145152) & how will be its transfer function form (Vo(s)/Vi(s) or Vo(s)/Ii(s))?
4.Is there any online tutorial about designing synthesizers with MC145152 or any tutorial about designing loop filters for phase detectors like the one in MC145152?
5.Is there any software that I can use to design a loop filter based on the specific charecteristics of my synthesizer & VCO?
Thank you very much for your answers.