Systems and methods for generating and measuring electrical signals

By integrating a digital-to-analog converter module and a buffer circuit, the system solves the problems of high cost and complexity of multi-SMU devices, achieves efficient generation and measurement of electrical signals, supports multi-range signal output, and is suitable for applications such as photonic integrated circuits.

CN115989419BActive Publication Date: 2026-06-30NICSLAB INC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NICSLAB INC
Filing Date
2021-07-26
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

In the existing technology, the use of multiple SMU devices requires high cost and space, and the control is complex, making it difficult to meet the signal supply and measurement needs of a large number of active electronic components in applications such as photonic integrated circuits.

Method used

A system comprising a digital-to-analog converter module, a buffer circuit, a voltage measurement system, and a current measurement system is designed. It can generate and measure multiple electrical signals and independently control the voltage and current of each channel through the buffer circuit. It integrates voltage and current measurement functions and supports unipolar, bipolar, and differential output.

Benefits of technology

It enables efficient generation and measurement of electrical signals in a compact system, reducing the number of devices and space requirements, lowering costs, and supporting flexible control of multi-range signal outputs.

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Abstract

A system for generating and measuring electrical signals is disclosed. The system includes a digital-to-analog converter module configured to generate one or more analog signals based on control signals, and one or more channels. Each channel includes an output terminal configured to be electrically connected to an electrical device, and a buffer circuit. The buffer circuit is configured to receive one of the one or more analog signals and provide a voltage to the output terminal based on the voltage of the received analog signal. The buffer circuit is also configured to be electrically connected to a current source and allow current to flow between the current source and the output terminal. The system also includes a voltage measurement system and a current measurement system, respectively configured to measure the voltage at the output terminal of each channel and the current flowing through it.
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