jodenma
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csa ring
now i need design one CMOS CSA ring oscillator,using 0.25um technology,VDD=2.5V, Vctr increase lined from 0.5v to 2v ,the output signal frequency should be 500Khz to 80Mhz,i should how to design this circuit.
now i design one initial circuit but when Vctrl from 0.5v to 2v the output frequency form 10mhz to 80mhz ,maybe i need to correct some circuit or parameter.
please give me some advice for this circuit ,thanks!
now i need design one CMOS CSA ring oscillator,using 0.25um technology,VDD=2.5V, Vctr increase lined from 0.5v to 2v ,the output signal frequency should be 500Khz to 80Mhz,i should how to design this circuit.
now i design one initial circuit but when Vctrl from 0.5v to 2v the output frequency form 10mhz to 80mhz ,maybe i need to correct some circuit or parameter.
please give me some advice for this circuit ,thanks!