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class ab amplifier

An amplifier and inductor technology, applied in the field of AB amplifiers, which can solve problems such as crossover distortion and mismatch

Active Publication Date: 2016-01-27
MARVELL ASIA PTE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Mismatch or crossover artifacts may appear when recombining the two halves of the signal

Method used

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Examples

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Embodiment Construction

[0037]The following description is merely exemplary in nature and is in no way intended to limit the disclosure, its application, or uses. As used herein, the phrase at least one of A, B, and C should be construed to mean a logical (A or B or C) using a non-exclusive logical "OR". It should be understood that steps within a method may be executed in different order without altering the principles of the present disclosure.

[0038] now refer to figure 1 and figure 2 , which shows a single-ended arrangement of the push-pull class AB amplifier 50 and a single-ended arrangement of the push-pull class AB amplifier 100 . exist figure 1 In , the amplifier 50 is arranged in a common gate configuration. Amplifier 50 includes a first inductor L connected in series 1 , the first transistor T 1 , the second transistor T 2 and the second inductor L 2 . first transistor T 1 can be an NMOS transistor, and the second transistor T 2 It may be a PMOS transistor, but other types o...

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Abstract

A class AB amplifier includes a first inductor having a first terminal in communication with a voltage source terminal. A first transistor has a drain terminal in communication with a second terminal of the first inductor. A second transistor has a source terminal in communication with a source terminal of the first transistor. A second inductor has a first terminal in communication with a drain terminal of the second transistor and a second terminal in communication with a reference potential. The drain terminals of the first transistor and the second transistor are capacitively coupled together.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Patent Application No. 13 / 044,183, filed March 9, 2011, and US Provisional Application No. 61 / 312,167, filed March 9, 2010. The disclosure of the aforementioned application is hereby incorporated by reference in its entirety. technical field [0003] This disclosure relates to amplifiers and more particularly to AB amplifiers. Background technique [0004] The background description provided herein is for the purpose of generally presenting the context of the disclosure. The work of the presently named inventors is neither expressly nor impliedly admitted to the extent that the work is described in this background section and aspects of the description that may not have been prior art at the time of filing with respect to the prior art of the present disclosure. [0005] Class A amplifiers operate over the full cycle of the input signal. The output signal is a scaled-up repli...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03F3/26
CPCH03F3/265H03F3/191H03F3/211H03F2203/21131
Inventor S·苏塔德加F·阿拉姆
Owner MARVELL ASIA PTE LTD