Temperature compensation circuit for a ring oscillator

A temperature compensation circuit, comprising:

• a plurality of capacitors, each capacitor to couple to an output of one inverter of a series-coupled ring of inverters;
• a first transistor comprising a first control input and first and second current terminals, the second current terminal to couple to a power supply terminal of each inverter;
• a second transistor comprising a second control input and third and fourth current terminals;
• a resistor coupled to the fourth current terminal of the second transistor at a first node;
• and
• an amplifier including a first amplifier input, a second amplifier input, and an amplifier output, the amplifier output coupled to the first and second control inputs, the first amplifier input coupled to the second current terminal of the first transistor, and the second amplifier input coupled to the first node.

A temperature-compensated ring oscillator circuit, comprising:

• a ring oscillator;
• a plurality of capacitors coupled to the ring oscillator;
• a first transistor comprising a first control input and first and second current terminals, the second current terminal coupled to a power supply terminal of electrical components of the ring oscillator;
• a second transistor comprising a second control input and third and fourth current terminals;
• a resistor coupled to the fourth current terminal of the second transistor at a first node;
• and
• an amplifier including a first amplifier input, a second amplifier input, and an amplifier output, the amplifier output coupled to the first and second control inputs, the first amplifier input coupled to the second current terminal of the first transistor, and the second amplifier input coupled to the first node.