Analog-digital converter

Abstract

The invention discloses an analog-digital converter. The analog-digital converter comprises a hardware adder and a proportional amplifier; the hardware adder comprises two DAC chips; a digital signalis converted into a current signal through the DAC chips, the current signal is introduced to be externally connected with a linear operational amplifier and then is converted into a corresponding analog voltage signal, and the analog voltage signal is converted into a voltage required for actual control after passing through the proportional amplifier; and the proportional amplifier is used for carrying out proportional amplification on the voltage generated by the hardware adder to achieve the voltage required for actual control. The analog-digital converter has the following beneficial effects: 1, the system noise is reduced to a certain extent, the effective digit number of measurement is increased, and the effective digit number of the DAC is increased to 32 bits in reality; and 2, the new 32-bit high-resolution DAC is relatively easy in the wiring aspect of a PCB.

Description

technical field [0001] The invention relates to the field of electronics, in particular to an analog-to-digital converter. Background technique [0002] In digital systems, both storage and transmission of signals are done digitally. When the digital system exchanges information with external analog devices, a digital-to-analog converter (DAC) is needed to convert the digital signal into an analog signal, so that the digital system can be well connected with the external analog system. DAC is an indispensable interface circuit in computer systems. The main function of DAC is to convert digital discrete signals into analog quantities based on standard quantities. DAC is widely used in communication, image processing, instrumentation, automation and other fields. [0003] The traditional technology has the following technical problems: [0004] In some design occasions requiring high precision, it is necessary to use a DAC converter with 32 or more digits. The traditional ...

AI Technical Summary

Problems solved by technology

In terms of PCB layout, the traditional 32-bit DAC has a lot of pins and requires external input. The requirements for noise processing are relatively high, which makes the overall layout more complicated.

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