Current mode comparator
A comparator and current mode technology, applied in the field of comparators, can solve the problems of high power consumption, etc., and achieve the effects of low power consumption, large system bandwidth, and high robustness
Inactive Publication Date: 2014-03-05
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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For example, BULT.K, and GEELEN.G proposed a current-mode comparator using a class B voltage output buffer, and B.M.Min and S.ff.Kim and L.Chen, B.Shi and C.Lu respectively proposed a A current-mode comparator, Traff also proposed a current-mode comparator, but they can not get a good compromise between power consumption, speed and accuracy, there is a problem of large power consumption
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[0022] The implementation of the present invention will be illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.
[0023] It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the implementation of the present invention. Limiting conditions, so there is no technical substantive meaning, any modification of structure, change of proportional relationship or adjustment of size, without affecting the effect and purpose of the present invention, should still fall within the scope of the present invention. The disclosed technical content must be within the scope covered. At the same time, terms such as "upper"...
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The invention provides a current mode comparator used for receiving a first path of current and a second path of current, and outputting a comparative result voltage signal. The current mode comparator at least comprises a first difference mode current generation circuit, a second difference mode current generation circuit and an AB-class output stage circuit, wherein the first difference mode current generation circuit is used for receiving the first path of current and the second path of current, and outputting the differential value of the first path of current and the second path of current; the second difference mode current generation circuit is used for receiving the first path of current and the second path of current, and outputting the differential value of the second path of current and the first path of current; the AB-class output stage circuit is connected with the first difference mode current generation circuit and the second difference mode current generation circuit, and is used for enabling one difference mode current generation circuit to be at the working state and the other difference mode current generation circuit to be at the disconnected state, and therefore a comparative result can be output. The current mode comparator is simple in structure, low in power dissipation, large in system bandwidth and high in comparison speed.
Description
technical field [0001] The invention relates to the technical field of microelectronics and solid state electronics, in particular to a comparator for comparing signals in current mode. Background technique [0002] With the development of integrated circuit technology, the operating voltage of integrated circuits is getting lower and lower, making the swing of the signal that can be processed smaller and smaller. The design of the voltage-mode signal processing system becomes more complicated and difficult. The voltage-mode signal is converted into Current mode processing is an effective way to solve this problem. [0003] At present, people have researched and developed a series of current mode comparators. For example, BULT.K, and GEELEN.G proposed a current-mode comparator using a class B voltage output buffer, B.M.Min and S.ff.Kim and L.Chen, B.Shi and C.Lu respectively proposed a A current-mode comparator, and Traff also proposed a current-mode comparator, but they c...
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IPC IPC(8): H03K5/22
Inventor 张正民李建朋董春雷宁振球金星秦英安俞跃辉
Owner SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI