Method for increasing comparison speed of comparator circuit and comparator circuit

A comparator circuit, high-level technology, applied in the direction of conversion equipment without intermediate conversion to AC, can solve problems such as affecting the overall performance of the circuit and the slow speed of the comparator

Active Publication Date: 2013-02-27
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The comparison speed of the comparator circuit is affected by the power supply voltage. The lower the power supply voltage, the slower the comparator speed. In the application of low power supply voltage, the comparator speed is slow, which affects the overall performance of the circuit.

Method used

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  • Method for increasing comparison speed of comparator circuit and comparator circuit
  • Method for increasing comparison speed of comparator circuit and comparator circuit
  • Method for increasing comparison speed of comparator circuit and comparator circuit

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Embodiment Construction

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0029] An embodiment of the present invention provides a charge pump, such as figure 1 shown, including:

[0030] The first switch S1, the second switch S2, the third switch S3, and the charge pump capacitor Cp.

[0031] One end of the first switch S1 is connected to the boost voltage source VBOOST of the charge pump, the other end of the first switch S1 is connected to the comparator circuit; one end of the second switch S2 is grounded, and the other end of ...

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PUM

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Abstract

The invention discloses a method for increasing comparison speed of a comparator circuit, a charge pump and an improved comparator circuit, and relates to the field of comparator circuits. The limit of a power voltage to the speed of a comparator is reduced, and the comparison speed of the comparator is increased at the low power voltage. The charge pump comprises a first switch, a second switch, a third switch and a charge pump capacitor, wherein one end of the first switch is connected with a voltage boost source of the charge pump, and the other end of the first switch is connected with the comparator circuit; one end of the second switch is grounded, and the other end of the second switch is connected with the charge pump capacitor; one end of the third switch is connected with the power voltage and the other end of the third switch is connected with the charge pump capacitor; the second switch and the third switch are connected with the same side of the charge pump capacitor; and one end of the charge pump capacitor not connected with one end of the second switch is connected with the comparator circuit. The method for increasing comparison speed of the comparator circuit is applied to the comparator circuit.

Description

technical field [0001] The invention relates to the field of comparator circuits, in particular to a method for increasing the comparison speed of the comparator circuit, a charge pump and an improved comparator circuit. Background technique [0002] In the integrated circuit system, the comparator circuit is a very common and very important module. Its comparison speed is the main performance index of the circuit. In the high-speed analog-to-digital converter / digital-to-analog converter circuit, the speed of the comparator affects the circuit One of the main factors of performance. [0003] In the prior art, comparator circuits are implemented in different ways, but the main functional modules are similar, mainly composed of a pre-amplification circuit and a latch circuit, and the comparison time of the comparator is jointly determined by the pre-amplification circuit and the latch circuit. [0004] In the process of realizing the above technical solution, the inventor fou...

Claims

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Application Information

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IPC IPC(8): H02M3/07
Inventor 陶云彬
Owner HUAWEI TECH CO LTD
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