Adaptive ADC Clock Control for Dynamic Sampling Rate Shifts
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing analog-to-digital converters (ADCs) face inefficiencies in power consumption and bus load due to fixed sampling rates, either consuming excessive power at high rates or producing insufficient digital outputs at low rates, limiting system performance.
Innovation Solution
A control circuit dynamically adjusts the sampling rate of an ADC based on threshold values and trigger conditions, allowing for adaptive frequency changes in clock signals to optimize power consumption and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the ADC operates at a high sampling rate to increase the number of digital outputs, then the productivity is improved, but the power consumption increases
Solution Approach 1:
The patent implements dynamic sampling rate adjustment by monitoring changes in digital output values and automatically increasing the sampling rate when threshold values are exceeded, then returning to nominal rate when conditions normalize. This dynamic adaptation allows the system to optimize between productivity and power consumption based on real-time conditions.
Solution Approach 2:
The system changes the operational parameters of the ADC by adjusting the clock signal frequency based on detected signal conditions. When the magnitude of digital output changes exceeds a threshold, the sampling rate is increased; otherwise, it operates at nominal rate, thereby optimizing power consumption while maintaining necessary productivity.
2Productivity
If the ADC operates at a high sampling rate to increase the number of digital outputs, then the productivity is improved, but the bus load increases
Solution Approach 1:
The system dynamically adjusts the sampling rate based on actual signal conditions, increasing it only when necessary to meet productivity requirements. This prevents unnecessary bus traffic and load when high sampling rates are not needed, optimizing the balance between output quantity and bus utilization.
3Use of energy by moving object
If the ADC operates at a nominal sampling rate to optimize power consumption, then the power efficiency is improved, but the number of digital outputs decreases
Solution Approach 1:
The system changes operational parameters dynamically based on signal characteristics. When signal changes exceed thresholds, the sampling rate is increased to maintain productivity; otherwise, it operates at nominal rate for optimal power efficiency, achieving conditional optimization of both parameters.
4Ease of operation
If the sampling rate is fixed to simplify system operation, then the ease of operation is improved, but the adaptability to different conditions decreases
Solution Approach 1:
The system performs self-adjustment by automatically monitoring its own output and detecting when threshold values are exceeded. It autonomously increases or decreases the sampling rate based on detected conditions without requiring external control, thereby maintaining ease of operation while achieving adaptability.
Solution Approach 2:
The system uses feedback from the digital output values to control the sampling rate. When the magnitude of changes in digital outputs exceeds a threshold, the system responds by increasing the sampling rate, creating a closed-loop control that provides adaptability while maintaining operational simplicity.
Data Source
AI summary
Various embodiments disclosed herein relate to adaptive clock signal management, and more specifically, to transitioning between clock frequencies to convert analog signals to digital signals at dynamic sampling rates. In an example embodiment, a device including an analog-to-digital converter (ADC) and a control circuit coupled to the ADC is provided. The ADC is configured to receive a first analog signal, receive a first clock signal, and generate a first set of digital values corresponding to the first analog signal based on the first clock signal. The control circuit is configured to determine that a change in the first set of digital values satisfies a first threshold value and increase the first clock signal from a first frequency to a second frequency in response to determining that the change in the first set of digital values satisfies the first threshold value.