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    hspicerf simulation problem for measure vco frequency under different control votage

    Hi guys, The following is my measure commands: .HBOSC TONE=2500e6 NHARMS=12 PROBENODE=vin,vip,1 + SWEEP v_control LIN 10 0.1 1.6 .measure hbosc fh find 'hertz[1]' at=0.1 .measure hbosc fl find 'hertz[1]' at=1.6 v_control is the control voltage for my vco. I wanna to measure the frequency at...
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    how to convert vcc vss to a vdd gnd voltage?

    Now I have a vcc = 0.6v and vss= -0.6 then how to convert this supply to a vdd = 1.2v ?
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    how does this voltage limiter work?

    The voltage limiter schematic is shown as above. How does this circuit work? Seems like vcc=vcc-vds(m5)-vds(m1)? I don't want VCC exceed 1v as well as VSS exceed -1v.
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    About PMOS Diode connection (current direction)

    Help! About PMOS Diode connection (current direction) The figure above is a PMOS, when VL is higher than VR, there will be a current from VL to VR. It means that the diode turns on when it is forward-biased. On the other hand, when VR is higher than VL, the voltage of drain is higher than...

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