I cannot find information on this device below? IS it documented?
This is VCO (view > netlist, you can see its ¥-device type from netlist), but it is not documented in Qspice. Here is my study note share as your reference.
By the way, for .bode analysis, you can add keyword “debug” in .bode directive to also give you the .tran results, in this way, you can probe V(CLK) and V(SLP) to see what they are doing. In that example, this VCO mainly just a constant frequency generation but with its 4-th order ramp reference together for slope compensation.
