Cmos lc oscillator resonant circuit - -

摘要

Cmos - - - lc resonant circuit oscillator, the a pair of symmetrical inductors (l₁, L₂) and a differential pair of transistors (q₁, Q₂) comprises, in which the inductors (l₁, L₂) a first their connections to a power supply means - node (tap) to which, via a supply resistor (r_Top) a supply voltage is applied, are connected to one another and a second connection in each case with the drain of one of the corresponding transistors (q₁, Q₂) have connected, wherein the sources of the transistors (q₁, Q₂) on a ground node (tn) which, via a ground resistance (r_Tail) is connected to ground, are connected to one another, and further comprising a current steering circuit for the control of a core flow (i_Core) between the supply nodes (tap) and the ground node (tn) comprises, in order to obtain a voltage drop at the ground resistance (r_Tail) to keep on a level, which is fixed by means of a reference voltage.