Patent ID: 6265858
Filing Date: 2001-07-24
Classification: G05F,G11C

Abstract:
A voltage adjusting circuit, comprising:a first transistor having a first electrode coupled to a first prescribed voltage and a second electrode coupled to a first resistor;a second transistor having a first electrode coupled to a second resistor and a second electrode coupled to a second prescribed voltage;a third resistor coupled in series to the first resistor at a first node and the second resistor at a second node, wherein a first reference voltage is generated at the first node and a second reference voltage is generated at the second node;a first differential amplifier configured to differentially amplify the first reference voltage received by a first input terminal and a first voltage received by a second input terminal to output a first control signal;a second differential amplifier configured to differentially amplify the second reference voltage received by a first input terminal and the first voltage received by a second input terminal to output a second control signal; anda third transistor and a fourth transistor coupled in series at a third node between a third prescribed voltage and a fourth prescribed voltage, and controlled based on the first and second control signals received by the fourth and third transistor, respectively, and wherein the third and fourth transistors stabilize the first voltage at the third node.