Reference Quantity Generator Analog-Digital Feedback Loop
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Solution Overview
Problem
Existing systems that generate analog and digital signals face challenges in producing precise and stable voltage and current references independent of supply voltage, which is crucial for various applications like sense amplifiers and wireless receivers, but often suffer from noise and accuracy issues.
Innovation Solution
A reference quantity generator comprising a reference source, a digitally controlled signal source, and a digital controller that uses an analog-and-digital control loop to adapt the digitally controlled quantity based on the reference source signal, reducing noise and maintaining high accuracy through feedback mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a reference source is used to provide a reference source signal, then the reference quantity can be generated, but the noise measure of the reference source signal is high
Solution Approach 1:
The patent implements a feedback mechanism where the reference source signal is fed back to a digital controller that generates a digital control signal. This feedback loop allows the system to continuously adjust the digitally controlled quantity to minimize the difference between the reference source signal and the generated reference quantity, thereby reducing noise while maintaining accuracy.
Solution Approach 2:
The patent introduces a digitally controlled signal source as an intermediary between the noisy reference source and the final reference quantity output. This intermediary component, controlled by digital signals, filters and conditions the reference source signal to produce a low-noise reference quantity while preserving the accuracy information from the original reference source.
2Adaptability or versatility
If a digitally controlled signal source is used to provide a digitally controlled quantity, then the reference quantity can be adapted, but the system complexity increases
Solution Approach 1:
The patent replaces complex analog control mechanisms with a digital control system. Instead of using analog circuits to adjust and adapt the reference quantity, the invention uses a digital controller that processes the reference source signal digitally and generates digital control signals, simplifying the overall system architecture while enhancing adaptability.
Solution Approach 2:
The patent achieves adaptability by changing the digital control parameters rather than physically reconfiguring the system. The digital controller adjusts the digitally controlled quantity by modifying digital control signals, allowing flexible adaptation of the reference quantity to different conditions without increasing hardware complexity.
Data Source
AI summary
A reference quantity generator for generating a reference quantity includes a reference source configured to provide a reference source signal, a digitally controlled signal source and a digital controller. The digitally controlled signal source is configured to provide a digitally controlled quantity. The reference quantity is determined based on the digitally controlled quantity. The digital controller is configured to provide a digital control signal to control the digitally controlled signal source to adapt the digitally controlled quantity based on the reference source signal using a feedback.