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Parallel analog-digital signal conversion device

A signal conversion device, analog-to-digital technology, applied in the direction of analog-to-digital conversion, code conversion, signal transmission system, etc., can solve the problem that the analog-to-digital conversion chip cannot meet the requirements of high precision and high speed, and achieve strong output drive capability, Realize the effect of speed and high speed

Active Publication Date: 2013-01-09
CHENGDU CHITONG DIGITAL SYST
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Problems solved by technology

[0005] In order to overcome the defect that the analog-to-digital conversion chip cannot meet the requirements of high precision and high speed at the same time, the present invention provides a parallel analog-to-digital conversion device:

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Embodiment Construction

[0047] The specific embodiment of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0048] The present invention provides a parallel digital-to-analog conversion device, including a weight voltage generation module 2, a cascade voltage subtractor 3, a weight voltage comparator 4, an input terminal 1, and N digital output terminals G 1 ~G N ;The above-mentioned parts and the connections between them are all arranged on the same PCB (Printed circuit board printed circuit board);

[0049] Weight voltage generation module (2): generate weight voltage, including a reference voltage generation module for generating a reference voltage and a resistor network for dividing the reference voltage to generate a weight voltage, and also includes N weight voltage output terminals A 1 ~A N ;The resistor network divides the reference voltage, the reference voltage and the weight voltage output terminal A 1 connection, each divi...

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Abstract

The invention relates to a parallel analog-digital signal conversion device, which comprises a power voltage generation module, a cascaded voltage subtractor, a power voltage comparer, an input end and N digital output ends; and all the parts and connecting wires among the parts are arranged on the same PCB (Printed Control Board). The power voltage generation module is used for generating a power voltage; the cascaded voltage subtractor is used for carrying out voltage subtraction on an input analog voltage; and the power voltage comparer is used for generating an output digital comparison signal. Due to adoption of the parallel analog-digital signal conversion device, all the components and the connecting wires among the components are arranged on the PCB, layout modes, connecting wire widths and wiring modes can be freely selected, the conversion precision can be achieved by increasing the levels of the subtractor and the comparer; and the parallel analog-digital signal conversion device can achieve high precision and high speed simultaneously by cooperatively selecting a comparer with strong output drive.

Description

technical field [0001] The invention relates to a parallel analog-to-digital signal conversion device. Background technique [0002] With the rapid development of digital electronic technology, various digital devices, especially digital electronic computers, are widely used and penetrate into almost all fields of the national economy. A digital computer can only process digital signals, and the result of the processing is still a digital quantity. When it is used for automatic control of the production process, the variables to be processed are often continuously changing physical quantities, such as temperature, pressure, speed, etc. are all analog quantities. , the analog quantities of these non-electronic signals must first be converted into voltage or current signals through sensors, and then converted into digital quantities before they can be sent to the computer for processing. [0003] The process of converting analog to digital is called analog-to-digital conversi...

Claims

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Application Information

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IPC IPC(8): H03M1/36
Inventor 张帆
Owner CHENGDU CHITONG DIGITAL SYST
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