Electronic System Capable of Compensating Process, Voltage and Temperature Effects

Abstract

An electronic system includes an integrated circuit, powered by a first voltage, with a first device provided therein; a detection device coupled to the first device to detect an output deviation of the first device attributed to process, voltage and temperature (PVT) effects; and a compensation device coupled to the detection device, adjusting the first voltage in response to the output deviation and outputting the first voltage to the integrated circuit to compensate for the PVT effects. The electronic system further comprises a conversion device, coupled between the detection device and the compensation device, to generate an indication signal corresponding to the output deviation for the compensation device to adjust the first voltage. In addition, the compensation device may compare and amplify a difference between a voltage level of the indication signal and a reference to linearly adjust the first voltage for compensating for the PVT effects.

1 . An electronic system comprising:
 a voltage regulator coupled to a main source to output a second source, comprising a thermal sensor to monitor temperature of the electronic system, the voltage regulator adjusting voltage level of the second source according to a sensing result of the thermal sensor; and   an integrated circuit powered by the second source.   
     
     
         2 . The electronic system as claimed in  claim 1 , wherein the thermal sensor is a thermister with resistance changed in response the temperature. 
     
     
         3 . The electronic system as claimed in  claim 1 , wherein the electronic system adjusts the second source linearly. 
     
     
         4 . An electronic system comprising:
 an integrated circuit powered by a first voltage, comprising a first device generating a desired output;   a detection device coupled to the first device to detect an output deviation of the first device, from the desired output, and the deviation output attributed to process, voltage and temperature (PVT) effects;   a compensation device coupled to the detection device, adjusting the first voltage in response to the output deviation and outputting the first voltage to the integrated circuit to compensate the PVT effects;   a main source powering the electronic system; and   a voltage regulator coupled to the main source outputting a second source to the integrated circuit;   wherein the voltage regulator comprises a thermal sensor to monitor temperature of the electronic system, and the voltage regulator adjusts voltage level of the second source according to a sensing result of the thermal sensor.   
     
     
         5 . The electronic system as claimed in  claim 4 , wherein the thermal sensor is a thermister with resistance changed in response the temperature. 
     
     
         6 . The electronic system as claimed in  claim 4 , wherein the electronic system adjusts the second source linearly. 
     
     
         7 . An electronic system comprising:
 an integrated circuit powered by a second source; and   a voltage regulator coupled to a main source outputting the second source, comprising:   a transistor coupled between the main source and a reference voltage; and   a thermal sensor, coupled between a control terminal of the transistor and the reference voltage;   wherein the thermal sensor monitors temperature of the electronic system, and the voltage level of the second source is adjusted according to a sensing result of the thermal sensor.   
     
     
         8 . The electronic system as claimed in  claim 7 , wherein the thermal sensor is a thermister with resistance changed in response the temperature. 
     
     
         9 . The electronic system as claimed in  claim 8 , wherein emitter current of the transistor is changed in response to resistance change of the thermal sensor. 
     
     
         10 . The electronic system as claimed in  claim 7 , wherein the transistor is operated in a linear amplification zone.