An Analog-to-Digital Converter Including Adaptive Delta Modulation

An analog-to-digital converter and delta modulation technology, applied in the direction of delta modulation, etc., can solve the problems of complex analog circuit structure, limited application of sigmadelta analog-to-digital converter, and high power consumption, and achieve low cost, low power consumption, and low power consumption. The effect of power consumption

Active Publication Date: 2018-08-28
SHANDONG GETTOP ACOUSTIC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the complex structure and high power consumption of analog circuits compared to digital circuits, the application of sigma delta analog-to-digital converters is gradually limited

Method used

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  • An Analog-to-Digital Converter Including Adaptive Delta Modulation
  • An Analog-to-Digital Converter Including Adaptive Delta Modulation
  • An Analog-to-Digital Converter Including Adaptive Delta Modulation

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Embodiment Construction

[0027] 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.

[0028] see figure 1 , is a schematic diagram of a known delta modulator system. The system consists of an analog adder 102 , a sample and hold circuit 103 , a quantizer 104 and a feedback circuit 105 . The analog adder 102 is used for subtracting the analog input signal 101 and the feedback signal 106 to generate an error signal 107 . If the error signal 107 is greater than zero, ie the input signal 101 is greater than the feedback signal 106, the output 109...

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Abstract

The invention provides an ADC with adaptive delta modulation, comprising a simulation adder for subtracting a feedback signal from a simulation input signal to obtain an error signal; a comparator for comparing the error signal with a zero level to output a comparison signal; a quantizer connected with an output terminal of the comparator, and converting the comparison signal into a quantized signal which is a binary digit quantized signal; an adaptive delta converter connected with an output terminal of the quantizer, and used for tracking a plurality of continuous quantized signals in order to generate digit tracking signals, wherein the number of tracked continuous quantized signals is no less than 2, and the bit of the digit tracking signals is no less than 2; and a DAC with one end connected to the output of the adaptive delta converter, and the other end connected to the simulation adder, and used for converting the digit tracking signals into simulated feedback signals to be transmitted to the simulation adder.

Description

technical field [0001] The invention relates to the technical field of analog-to-digital converters, in particular to an analog-to-digital converter with low cost and good performance including adaptive incremental modulation. Background technique [0002] With the rapid development of digital electronic technology, various digital devices, especially various processors, are widely used and penetrate into almost all fields of the national economy. The processor can only process digital signals, and the result of the processing is still a digital quantity. The variables in nature are often continuously changing analog quantities, such as force, displacement, velocity, etc. These analog quantities must first be converted into voltage or current signals by sensors, and then converted into digital quantities before they can be sent to the processor for processing, which requires an analog-to-digital converter, namely an analog-to-digital converter (ADC). The analog-to-digital ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03M3/02
Inventor 孙丽娜杨少军
Owner SHANDONG GETTOP ACOUSTIC
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