A High Speed ​​Low Power Consumption Analog-to-Digital Converter with Wideband Input

Abstract

The invention relates to a high-speed low-power consumption analog-to-digital converter with wideband input. The analog-to-digital converter is integrated with an input frequency monitoring module, a power consumption control module and a controlled analog-to-digital converter module. To be specific, the input frequency monitoring module consists of an input signal pre-processing circuit, a monitoring clock generating circuit and a frequency counting circuit; the power consumption control module includes a power consumption control logic circuit and a power consumption control output interface circuit; and the controlled analog-to-digital converter module includes a master bias circuit, a sampling holding circuit, an analog-digital conversion circuit and a coding output circuit. According to the invention, on the basis of input signal frequency monitoring, flexible power consumption supply configuration is carried out on the controlled analog-to-digital converter module according to the speed requirement of the input signal, thereby realizing high-speed and low-power consumption balancing. Moreover, the provided high-speed low-power consumption analog-to-digital converter has characteristics of wideband inputting, high speed, low power consumption, and high flexibility and universality.

Description

technical field [0001] The invention relates to a high-speed low-power analog-to-digital converter with broadband input, which belongs to the field of integrated circuits, and is mainly used to provide configurable power consumption management for the analog-to-digital converter under the condition of receiving broadband signal input, so as to realize broadband input, High-speed, low-power analog-to-digital converter. Background technique [0002] Analog-to-digital converter (ADC) is one of the basic components of modern electronic systems. It connects the real world and the computer world by receiving and collecting analog signals from the external real world and converting them into digital coded signals that can be recognized by the digital signal processing system. bridge role. With the continuous development of semiconductor technology and the continuous reduction of device feature size, the speed of digital signal processing circuit modules is getting faster and faste...

AI Technical Summary

Problems solved by technology

This is necessary for high-frequency signal input conditions, and its disadvantage is that for low-frequency input signal conditions, the ADC optimized for the highest speed will cause a large waste of power consumption, and the ADC needs to process The wider the spectrum of the input signal, the more alarming the wasted power

One of its disadvantages is that ADCs of different specifications are required, and analog-to-digital converters of different specifications cannot be used universally, which will cause repeated investment and high purchase costs; the second disadvantage is that the frequency of the input signal is often unknown, In this case, users are required to choose between high speed and low power consumption. If you choose a high-speed analog-to-digital converter, you will waste investment and power consumption. If you choose a low-power analog-to-digital converter, you will face the risk of insufficient speed. , which increases the difficulty for users to use

[0005] Although the above two solutions of analog-to-digital converters can also achieve a compromise between high speed and low power consumption to a certain extent, it is difficult to achieve a balance between high speed and low power consumption when facing broadband signal input, and cannot quickly Good handling of the three mutually restrictive variable relationships of broadband input, high speed, and low power consumption, lack of flexibility and versatility

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