MULTISTAGE AMPLIFYING CIRCUIT

摘要

PURPOSE: A multistage amplifying circuit is provided to minimize the distortion of the output voltage of the multistate amplifying circuit by eliminating memory defect which is capable of generating between a first stage amplifier and a second state amplifier. CONSTITUTION: A first amplifying circuit(112) samples a first analog voltage. The first amplifying circuit amplifies a difference value of the first analog voltage and a first digital voltage. A second amplifying circuit samples a second analog voltage. The second amplifying circuit amplifies a difference value of the second analog voltage and a second digital voltage. A sharing amplifier(120) receives the output voltage of the first amplifying circuit and the output voltage of the second amplifying circuit. The sharing amplifier resets the output voltage of the first amplifying circuit. The sharing amplifier determines an output voltage using the second amplifying circuit.