Oscillator circuit and associated oscillator device

An oscillator circuit, comprising:

• a negative-temperature-coefficient (NTC) bias current generating circuit, coupled between a supply voltage and a ground voltage, the NTC bias current generating circuit arranged to generate at least one NTC bias current;
• and
• a set of oscillator sub-block circuits, coupled to one another to form an oscillator, wherein each oscillator sub-block circuit of the set of oscillator sub-block circuits comprises:
• a plurality of transistors, coupled between the supply voltage and a node within the NTC bias current generating circuit, wherein the NTC bias current generating circuit and said each oscillator sub-block circuit share at least one transistor in the plurality of transistors, and said each oscillator sub-block circuit is indirectly coupled to the ground voltage through the node within the NTC bias current generating circuit, rather than directly electrically connected to the ground voltage.