Methods and control systems of resistance adjustment of resistors

A control system for adjusting a resistance value of a resistor in a circuit comprising:

• the resistor having a plurality of parameters of the resistor stored in a non-volatile memory in the circuit, wherein the plurality of parameters comprises an initial resistance value measured at wafer test, an initial temperature associated with the initial resistance value measured at the wafer test, a target resistance value, and a temperature coefficient of the resistance measured at the wafer test;
• a temperature regulator located adjacent to the resistor;
• and
• a controller configured to:
• retrieve the plurality of parameters of the resistor from the non-volatile memory in the circuit;
• detect an operating temperature of the resistor during circuit operation in field;
• generate a temperature difference between the operating temperature and a target temperature at which the resistor has the target resistance value;
• produce a control signal responsive to the temperature difference generated;
• and
• transmit the control signal to the temperature regulator to adjust the resistance value of the resistor,
• wherein the temperature regulator comprises a front end of the line (FEOL) cooler configured to change temperature in response to the control signal received from the controller.

A non-transitory computer storage medium having instructions stored thereon which, when executed by a controller in a circuit, cause the controller to perform:

• retrieving a plurality of parameters of a resistor from a non-volatile memory in the circuit;
• detecting an operating temperature of the resistor during circuit operation in field;
• generating a temperature difference between the operating temperature and a target temperature at which the resistor has a target resistance value;
• producing a control signal responsive to the temperature difference generated;
• and
• transmitting the control signal to a temperature regulator placed adjacent to the resistor to adjust the resistance value of the resistor, wherein the temperature regulator comprises a front end of the line (FEOL) cooler configured to change temperature in response to the control signal received from the controller.