Digital-to-analog conversion circuit, control method and storage device

Abstract

The invention provides a digital-to-analog conversion circuit, a control method and a storage device, which are mainly used for a signal processing system. The digital-to-analog conversion circuit comprises a plurality of digital signal input ends, a plurality of threshold voltage adjustable programmable semiconductor devices, a bias voltage input end and an analog signal output end, wherein the grid electrodes of the plurality of programmable semiconductor devices are in one-to-one corresponding connection with the plurality of digital signal input ends; the drain electrodes are connected tothe bias voltage input end; the source electrodes are connected with the analog signal output end; the programmable semiconductor device is realized by using a floating gate transistor, wherein the threshold voltage of the floating gate transistor is regulated through controlling the floating gate electron quantity in the floating gate transistor; the digital-to-analog conversion function is realized. The circuit structure is simple; the device quantity is small; the circuit area is small; the response speed of the programmable semiconductor device is high; the power consumption is low, so that the time delay and the power consumption of the whole digital-to-analog conversion circuit are low.

Description

technical field [0001] The invention relates to the field of integrated circuits, in particular to a digital-to-analog conversion circuit, a control method, and a storage device. Background technique [0002] Digital-to-Analog Converter (DAC) circuit is a very important part of the signal processing system, which is used to convert discrete digital signals into continuous analog signals, and is an indispensable circuit module in analog electronic circuits. There are many ways to realize the digital-to-analog conversion circuit, such as weighted resistance network DAC, inverted T-shaped resistance network DAC, and single-valued current-type network DAC. The traditional digital-to-analog conversion circuit is mainly composed of digital registers, analog switches, bit-weighted networks, Composed of a summation operational amplifier and a reference source, the structure is complex, the number of components is large, the circuit area is large, the delay is long, and the power con...

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention provides a digital-to-analog conversion circuit and its control method to solve the problem of large number of components in the prior art

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