Digital to analog converter

Abstract

The invention discloses a digital to analog converter. The digital to analog converter comprises a first-stage SAR digital to analog conversion sub-circuit, a second-stage SAR digital to analog conversion sub-circuit, an error amplifying circuit and a digital error correction circuit, wherein the first-stage SAR digital to analog conversion sub-circuit is used for performing 6-bit primary quantization processing on an input signal in order to obtain a high 6-bit signal and output the obtained high 6-bit signal to the digital error correction circuit, and outputting a remaining residual signal to the error amplifying circuit; the error amplifying circuit is used for amplifying the residual signal, and transmitting the amplified signal to the second-stage digital to analog conversion sub-circuit; the second-stage SAR digital to analog conversion sub-circuit is used for performing 7-bit secondary quantization processing on the amplified signal in order to obtain a low 7-bit signal and output the obtained low 7-bit signal to the digital error correction circuit; the second-stage SAR digital to analog conversion sub-circuit and the first-stage SAR digital to analog conversion sub-circuit share the same reference voltage; and the digital error correction circuit is used for performing staggered adding on the high 6-bit signal and the low 7-bit signal in order to obtain a 12-bit digitally-quantized signal. The digital to analog converter is simple in structure, and power consumption can be saved effectively.

Description

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AI Technical Summary

Benefits of technology

This patented technology improves on existing analog signal processing systems that require many components such as transistors or resistive elements for data transmission. By utilizing this new design instead of just one component like an integrating operation amplifier (I/A), it allows for faster response times while consuming less energy than previous designs without sacrificing accuracy. Additionally, there are no complicated logic involved when comparing different versions of signals processed separately from each other due to differences between them's characteristics.

Problems solved by technology

The technical problem addressed in this patented text relates to improving the performance of electronic systems used in wireless communications while reducing their energy usage. Specifically, there exist challenges related to achieving precise synchronized conversion between different components within these systems without consuming too much electrical current or requiring expensive equipment like external counters.

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