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公开(公告)号：US10771017B2
公开(公告)日：2020-09-08
申请号：US16242011
申请日：2019-01-08
Applicant: Elite Semiconductor Memory Technology Inc.
Inventor： Shao-Ming Sun
Abstract: An amplifier circuit with novel design is provided. The amplifier circuit includes an input stage, a resistor, an output stage, an intermediate stage and a gm circuit. The input stage is coupled to a first supply voltage, and is arranged to receive an input voltage and a feedback current. The resistor is coupled between the input voltage and the input stage. The output stage is coupled to a second supply voltage, and is arranged to provide an output voltage for driving a load. The intermediate stage is coupled between the input stage and the output stage, and includes a level shifter. The gm circuit is coupled to the input stage, and is arranged to compare the input voltage with a common mode voltage, and thereby generates a compensate current for the input stage.
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公开(公告)号：US11070178B1
公开(公告)日：2021-07-20
申请号：US16849428
申请日：2020-04-15
Applicant: ELITE SEMICONDUCTOR MEMORY TECHNOLOGY INC.
Inventor： Shao-Ming Sun
Abstract: A class D power amplifier with novel design is provided. The amplifier includes an input stage, a periodic signal generator, a comparator, a power output stage, and a boost circuit. The input stage is coupled to a first supply voltage. The periodic signal generator generates a periodic signal and a reference signal. The power output stage is coupled to a second supply voltage. The boost circuit compares an output of the input stage with the reference signal, and thereby adjusts a value of the second supply voltage. The value of the second supply voltage is larger than a value of the first supply voltage. The reference signal is proportional to an amplitude of the periodic signal, and the amplitude of the periodic signal is determined by the value of the second supply voltage.
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公开(公告)号：US20200220501A1
公开(公告)日：2020-07-09
申请号：US16242011
申请日：2019-01-08
Applicant: Elite Semiconductor Memory Technology Inc.
Inventor： Shao-Ming Sun
Abstract: An amplifier circuit with novel design is provided. The amplifier circuit includes an input stage, a resistor, an output stage, an intermediate stage and a gm circuit. The input stage is coupled to a first supply voltage, and is arranged to receive an input voltage and a feedback current. The resistor is coupled between the input voltage and the input stage. The output stage is coupled to a second supply voltage, and is arranged to provide an output voltage for driving a load. The intermediate stage is coupled between the input stage and the output stage, and includes a level shifter. The gm circuit is coupled to the input stage, and is arranged to compare the input voltage with a common mode voltage, and thereby generates a compensate current for the input stage.
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