Sense Amplifier Circuit With MOS Driving Strength Calibration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing integrated circuits face challenges in calibrating the driving strength of MOS transistors used in signal line sense amplifying circuits, which affects the accuracy and efficiency of signal sensing and amplification.
Innovation Solution
The integrated circuit includes an operation control circuit that generates signals for a calibration operation and a sense amplifying operation, and a signal line sense amplifying circuit that calibrates the driving strength of MOS transistors using these signals to ensure accurate signal sensing and amplification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If MOS transistors are used in signal line sense amplifying circuits, then signal sensing and amplification can be performed, but the driving strength varies due to process characteristics affecting accuracy
Solution Approach 1:
The patent performs calibration operations before normal signal sensing to pre-adjust the MOS transistor driving strengths. The calibration circuit generates calibration signals that adjust the driving strength of MOS transistors in advance, ensuring consistent performance before actual signal processing occurs.
Solution Approach 2:
The patent implements a feedback mechanism where the calibration circuit monitors the actual driving strength of MOS transistors and generates appropriate calibration signals to adjust and equalize the driving strengths. This closed-loop approach ensures that process variations are compensated for, maintaining reliable signal sensing accuracy.
2Measurement precision
If calibration operations are performed to equalize MOS transistor driving strengths, then signal sensing accuracy improves, but additional calibration circuits and signals increase device complexity
Solution Approach 1:
The patent combines the calibration circuit functionality with the existing sense amplifying circuit structure. The calibration circuit shares common elements with the signal processing path, integrating calibration operations into the existing circuit architecture rather than adding completely separate calibration infrastructure.
Solution Approach 2:
The calibration circuit is designed to serve multiple purposes: it calibrates MOS transistor driving strengths, generates necessary calibration signals, and can operate in conjunction with the normal signal sensing operation. This multi-functional design reduces the need for dedicated separate circuits for each function.
Data Source
AI summary
An integrated circuit includes an operation control circuit configured to control generation of a sharing signal, a pre-charge signal, a sensing signal, a latch signal, and a calibration enable signal for a calibration operation and a sense amplifying operation. The integrated circuit also includes a signal line sense amplifying circuit configured to receive the sharing signal, the pre-charge signal, the sensing signal, the latch signal, and the calibration enable signal to perform the calibration operation and the sense amplifying operation.