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Integrated circuit devices having a control circuit for biasing an amplifier output stage and methods of operating the same

A bias control, integrated circuit technology, applied to parts of amplifying devices, amplifiers with multiple amplifying elements, amplifiers with semiconductor devices/discharge tubes, etc., can solve problems such as increased DC current consumption

Active Publication Date: 2006-07-12
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unfortunately, this can lead to increased DC current consumption

Method used

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  • Integrated circuit devices having a control circuit for biasing an amplifier output stage and methods of operating the same
  • Integrated circuit devices having a control circuit for biasing an amplifier output stage and methods of operating the same
  • Integrated circuit devices having a control circuit for biasing an amplifier output stage and methods of operating the same

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Embodiment Construction

[0019] While the present invention may be modified and substituted in various forms, specific embodiments thereof are shown by way of example in the accompanying drawings and will be described in detail below. It should be understood, however, that there is no intention to limit the invention to the particular forms disclosed, but on the contrary, the invention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the claims. Like reference numerals refer to like elements throughout the description of the figures.

[0020] As used herein, no distinction is made between singular and plural unless otherwise specified. It should also be understood that the terms "comprising", "comprising" in this specification indicate the existence of stated features, integers, steps, operations, elements and / or parts, but do not exclude the addition of one or more other features, integers , steps, operations, elements an...

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Abstract

An integrated circuit device includes an amplifier circuit that generates an output voltage. A bias control circuit is configured to generate a bias control voltage or the output voltage at an output thereof based on a state of a control signal. An output stage driver circuit that is responsive to the voltage generated at the output of the bias control circuit.

Description

technical field [0001] The present invention relates generally to an integrated circuit device and a method of operating the same, and more particularly, to an integrated circuit device with a bias control circuit and a method of operating the same. Background technique [0002] Typically, an operational amplifier (OP-AMP) with two or more stages uses compensation capacitors to provide stability. For example, figure 1 A conventional source driver circuit 100 including an amplifier 110, a switch 120, and a load 130 is shown, the structure of which is shown in the figure. Amplifier 110 amplifies the input and produces an output to load 130 through switch 120 . Amplifier 110 can be designed to have a constant slew rate and stability within a specific frequency characteristic and phase characteristic. Therefore, the amplifier 110 can be designed to drive the load 130 . As the load 130 increases, frequency and phase characteristics may deteriorate. Unfortunately, this can le...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F1/02H03F3/42
CPCH03F3/211H03F3/3022H03F3/45475H03F3/42H03F2203/30021H03F1/0277H03F3/72H03F2203/7206H03F1/0261H03F3/45
Inventor 禹宰赫郑圭荣
Owner SAMSUNG ELECTRONICS CO LTD
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