Audio power amplifying circuit and mode control circuit thereof
A mode control, audio power technology, applied in power amplifiers, low frequency amplifiers, electrical program control, etc., can solve the problems of multi-port, increase product production cost and application cost, and insufficient flexibility, so as to reduce manufacturing and packaging costs, The effect of reducing the periphery of the circuit application
Active Publication Date: 2015-04-29
CRM ICBG (WUXI) CO LTD
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Problems solved by technology
[0006] At present, most product designs are limited by cost pressures and only select part of the mode control, which leads to insufficient flexibility in the product application process, and also occupies more ports, which increases the production cost and application cost of the product.
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[0020] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0021] Reference herein to "one embodiment" or "an embodiment" refers to a particular feature, structure or characteristic that can be included in at least one implementation of the present invention. "In one embodiment" appearing in different places in this specification does not all refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments. Unless otherwise specified, the words connected, connected, and joined in this document mean that they are electrically connected directly or indirectly.
[0022] The mode control circuit in the present invention has a single control port, and the mode control circuit controls the audio power amplifying circuit to work in diff...
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Provided are an audio power amplification circuit and a mode control circuit thereof. The mode control circuit comprises a control signal detection module and a mode control module, wherein the control signal detection module comprises a single control port which is used for receiving a pulse control signal, and the control signal detection module detects the pulse control signal and outputs a mode control instruction corresponding to the pulse control signal, and the mode control module, based on the mode control instruction, controls an audio power amplification module to work under a corresponding working mode. Compared with the prior art, the audio power amplification circuit and the mode control circuit thereof in the present invention have a single control port, and the mode control circuit, based on a pulse control signal received by the signal control port, controls the audio power magnification circuit to work under different working modes, thereby decreasing the circuit application periphery and reducing the manufacturing and packaging costs of circuit chips.
Description
【Technical field】 [0001] The invention relates to the field of audio power amplifying circuits, in particular to an audio power amplifying circuit and a mode control circuit thereof. 【Background technique】 [0002] With the development of audio power amplification technology, there are more and more working modes of audio power amplification circuits. In the prior art, each working mode of the audio power amplifier circuit requires an independent control port, which requires more peripheral lines for control in application, which increases the related cost of product application, and the number of control ports of the chip increases. It will increase the cost of IC (Integrated Circuit, integrated circuit) chip and packaging cost, resulting in high cost of the whole application solution. [0003] The following are several common working modes of audio power amplifier circuits, and each working mode has a separate control port for control. The list is as follows: [0004] ...
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IPC IPC(8): H03F3/20G05B19/04
CPCH03F3/187
Inventor 吕永康张殿军沈建伟孔美萍程学农韦林军
Owner CRM ICBG (WUXI) CO LTD