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Offset adjustment method and offset adjustment circuit

A technology of offset adjustment and offset deviation, which is applied in the direction of electrical components, DC level changes, analog/digital conversion calibration/testing, etc., can solve the problem of high constant power consumption, and achieve the effect of reducing/suppressing the offset change of the comparator

Inactive Publication Date: 2017-10-13
MEDIATEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the past, comparators based on pre-amplifiers were used as the main architecture of analog-to-digital converters, such as flash ADCs, but the main The disadvantage is that the constant power consumption is higher

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  • Offset adjustment method and offset adjustment circuit
  • Offset adjustment method and offset adjustment circuit
  • Offset adjustment method and offset adjustment circuit

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Embodiment Construction

[0017] Certain terms are used in the description and claims to refer to particular elements. Those of ordinary skill in the art should understand that manufacturers may use different terms to refer to the same element. The specification and claims do not use the difference in name as a way to distinguish components, but use the difference in function of components as a criterion for distinguishing. "Includes" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". In addition, the term "coupled" herein includes any direct and indirect means of electrical connection. Therefore, if it is described that a first device is coupled to a second device, it means that the first device may be directly electrically connected to the second device, or indirectly electrically connected to the second device through other devices or connection means.

[0018] figure 1 is a schematic diagram of an offset adjustment ci...

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Abstract

The invention provides an offset adjustment method and an offset adjustment circuit for a dynamic comparator. The offset adjustment circuit includes a detection unit and a control unit. The detection unit detects whether a comparator offset of the dynamic comparator deviates from a target offset setting, and generates a detection result accordingly. When the detection result shows that the comparator offset deviates from the target offset setting, the control unit adjusts a voltage setting of at least one input received by the dynamic comparator. Through the present invention, the effect of alleviating / suppressing the comparator offset variation and / or restoring the deviated comparator offset to a desired offset setting can be achieved.

Description

technical field [0001] The embodiments disclosed in the present invention relate to a dynamic comparator, and more specifically, the present invention relates to an offset adjustment method and an offset adjustment circuit for a dynamic comparator. Background technique [0002] Nowadays, there is an increasing demand for battery-powered portable devices. High-resolution and high-speed applications force designers to continue to pursue low-power solutions, such as scaling down the process. However, scaling down the process may cause process variation and other The non-ideal characteristics seriously affect the overall performance. Analog-to-digital converter (analog-to-digital converter, ADC) is one of the applications that require low power consumption, high resolution and high-speed operation. In the past, comparators based on pre-amplifiers were used as the main architecture of analog-to-digital converters, such as flash ADCs, but the main The disadvantage is that the co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03M1/10
CPCH03K5/003H03K5/2481H03M1/361
Inventor 许云翔
Owner MEDIATEK INC