Digital Temperature Sensing Circuit With Switchable Code Resolution
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Solution Overview
Problem
Existing digital temperature sensing circuits in memory systems face challenges in reliably outputting temperature codes with varying resolutions, affecting the system's accuracy and reliability.
Innovation Solution
A digital temperature sensing circuit that includes a temperature voltage generator, a code voltage generator, and a mode selector, which can output temperature codes with different bit lengths based on a selected mode, allowing for fast or slow modes to optimize resolution and output time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the digital temperature sensing circuit outputs temperature codes with higher resolution, then the accuracy of temperature measurements is improved, but the output time increases
Solution Approach 1:
The circuit dynamically switches between different operating modes (first mode with lower resolution and faster output, second mode with higher resolution and slower output) based on system requirements. The mode selector circuit enables the sensing circuit to adapt its resolution and output speed characteristics, resolving the contradiction between measurement precision and output time by making the system flexible rather than fixed.
Solution Approach 2:
The invention changes the operating parameters of the temperature sensing circuit by selecting different modes that have different resolution characteristics. In the first mode, the circuit outputs temperature codes with fewer bits (faster output), while in the second mode, it outputs temperature codes with more bits (higher resolution). This parameter change allows the system to optimize between speed and accuracy based on specific operational needs.
2Productivity
If the digital temperature sensing circuit outputs temperature codes with lower resolution, then the output time is reduced, but the accuracy of temperature measurements decreases
Solution Approach 1:
The circuit dynamically switches between different operating modes (first mode with lower resolution and faster output, second mode with higher resolution and slower output) based on system requirements. The mode selector circuit enables the sensing circuit to adapt its resolution and output speed characteristics, resolving the contradiction between measurement precision and output time by making the system flexible rather than fixed.
Solution Approach 2:
The invention changes the operating parameters of the temperature sensing circuit by selecting different modes that have different resolution characteristics. In the first mode, the circuit outputs temperature codes with fewer bits (faster output), while in the second mode, it outputs temperature codes with more bits (higher resolution). This parameter change allows the system to optimize between speed and accuracy based on specific operational needs.
3Device complexity
If the digital temperature sensing circuit uses a fixed resolution mode, then the circuit design is simplified, but the adaptability to different operational requirements is reduced
Solution Approach 1:
The temperature sensing circuit is designed to perform multiple functions by supporting both first mode (lower resolution, faster output) and second mode (higher resolution, slower output) operations. The mode selector circuit allows the same sensing circuit to adapt to different operational requirements, making it a universal solution that can handle both speed-critical and accuracy-critical applications without requiring separate dedicated circuits.
Data Source
AI summary
The digital temperature sensing circuit includes a temperature voltage generator configured to generate a temperature voltage varying with a temperature in response to a first reference voltage, divide a supply voltage in response to a second reference voltage, and generate a high voltage and a low voltage, a code voltage generator configured to divide the second reference voltage based on the high voltage and the low voltage and output divided voltages having different voltage levels, and a mode selector supplied with the temperature voltage and the divided voltages, and configured to output a first code or a second code in response to a mode select signal, wherein the first code and the second code have different numbers of bits.