Level shifter
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsSang Hoon Ha, Shinichi Iizuka, Youn Suk Kim, Jun Kyung Na
Life of this patent
Estimating the term…
Abstract
A level shifter includes: a first buffer amplifier transferring a preset reference voltage to a first output terminal; a second buffer amplifier connected in parallel to the first buffer amplifier and transferring an input voltage to a second output terminal; a positive feedback amplifier connected in parallel to the first buffer amplifier and the second buffer amplifier, and amplifying the input voltage by a preset gain to transfer the amplified input voltage to a third output terminal; and a level regulation unit regulating levels of output signals of the first buffer amplifier, the second buffer amplifier, and the positive feedback amplifier and providing the regulated output signals to a common output node.
Claims8
A level shifter comprising:
- a first buffer amplifier transferring a preset reference voltage to a first output terminal;
- a second buffer amplifier transferring an input voltage to a second output terminal;
- a positive feedback amplifier connected in parallel to the first buffer amplifier and the second buffer amplifier, and amplifying the input voltage by a preset gain to transfer the amplified input voltage to a third output terminal;
- and
- a level regulation unit regulating levels of output signals of the first buffer amplifier, the second buffer amplifier, and the positive feedback amplifier and providing the regulated output signals to a common output nod;
- wherein the level regulation unit comprises:
- a first level regulator connected between the first output terminal of the first buffer amplifier and the common output node;
- a second level regulator connected between the second output terminal of the second buffer amplifier and the common output node;
- and
- a third level regulator connected between the third output terminal of the positive feedback amplifier and the common output node.
A level shifter comprising:
- a first buffer amplifier transferring a preset reference voltage to a first output terminal;
- a second buffer amplifier transferring an input voltage to a second output terminal;
- a positive feedback amplifier connected in parallel to the first buffer amplifier and the second buffer amplifier, and amplifying the input voltage by a preset gain to transfer the amplified input voltage to a third output terminal;
- and
- a level regulation unit including:
- a first level regulator connected between the first output terminal of the first buffer amplifier and the common output node;
- a second level regulator connected between the second output terminal of the second buffer amplifier and the common output node;
- and
- a third level regulator connected between the third output terminal of the positive feedback amplifier and the common output nod;
- wherein the level regulation unit comprises:
- a first level regulator connected between the first output terminal of the first buffer amplifier and the common output node;
- a second level regulator connected between the second output terminal of the second buffer amplifier and the common output node;
- and
- a third level regulator connected between the third output terminal of the positive feedback amplifier and the common output node.
Dependencies are inferred from the claim text.