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A Fast Response Dynamic Latch Comparator

A latching comparator, fast response technology, applied in instruments, signal transmission systems, code conversion, etc., can solve problems such as multiple energy consumption and consumption, and achieve the effect of fast response time

Active Publication Date: 2021-06-01
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the disadvantage of this comparator is that too much power is consumed during the comparator conversion

Method used

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  • A Fast Response Dynamic Latch Comparator
  • A Fast Response Dynamic Latch Comparator
  • A Fast Response Dynamic Latch Comparator

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Embodiment Construction

[0025] Below in conjunction with accompanying drawing, describe content of the present invention in detail:

[0026] figure 2 It is the literature [S.Mahdavi, M.Jafarzadeh, M.Poreh and S.Ataei,"An ultra high-resolution low propagation delay time and low power with 1.25GS / s CMOS dynamic latched comparator for high-speed SAR ADCs in 180nm technology, "2017IEEE 4th International Conference on Knowledge-Based Engineering and Innovation (KBEI), Tehran, 2017, pp.0260-0265.] Proposed dynamic latch comparator. The comparator has two input terminals, one terminal is connected to the analog input signal Vin, and the other terminal is connected to the analog input signal Vip. The dynamic latch comparator processes the input signal through the first-level preventive large structure, and outputs O+ and O-. The second-level latch structure uses two comparators in series to avoid quiescent current and reduce power consumption.

[0027] image 3 It is the fast response comparator of the p...

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Abstract

The invention discloses a fast-response dynamic latch comparator, which is applied in the technical field of successive approximation analog-to-digital converters. The present invention is characterized in that the output voltage of the comparator during reset is increased, and the response speed of the comparator is effectively improved; therefore, the technical solution of the present invention is a fast-response dynamic latch comparator, and the comparator includes: a pre-amplification structure and a latch structure. Compared with the dynamic latch comparator proposed by the present invention, the response time of the dynamic latch comparator proposed by the present invention is faster.

Description

technical field [0001] The technical field where the "Dynamic-latch Comparator" is directly applied is the Successive Approximation Register Analog-to-Digital Converter (SAR ADC for short). Background technique [0002] With the development of electronic and communication technologies, the design direction of today's mixed-signal integrated circuits mainly focuses on the design of a system on chip (SoC). Mixed-signal SoC mainly integrates analog circuit modules, digital circuit modules and memory on one chip, and is widely used in wireless communication, digital communication and mobile phone chips. In the mixed-signal SoC, some circuit modules process analog signals, and some modules process digital signals, and it is required to be able to convert between the two signals. Therefore, an analog-to-digital converter (ADC) is a relatively important module in the SoC chip. As an interface between analog and digital modules in the SoC chip, the ADC has become a focus of attenti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03M1/44
CPCH03M1/44
Inventor 樊华杨静萱冯全源蔡经纬李大刚胡达千岑远军
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA