i want to divide the o/p freq of Quad-VCO i.e. 4.8 GHz into 2.4 GHz. for this purpose i need a freq divider ckt.
i saw the freq divider from RF library in cadence. it is containing 4 pins (pin, pout,nin, nout).
how to apply stimulus to this pins & check the o/p
i dont know what nout stands for here
pin might be i/p power, pout might be o/p power
nin might be divide no.
Most likely you have tt set to too large a value (or left blank). The default value of tt is 0.01 seconds (which is rather long, so the output probably doesn't change unless you have a very slow clock).
I had the following parameters:
n=8nhi=2 # output will be two pulses of the input pulse widedir=1tt=1nvdd=1.2vss=0thresh=0.6 # this will be the default since it is (vdd+vss)/2.
I had this connected to a vsource in "pulse" mode with:
Zero value: 0One value: 1.2Period of waveform: 1uRise time: 1nFall time: 1nPulse width: 500n
Attached is a picture. This works exactly as you'd expect.