Dynamic Voltage Sense Amplifier for DRAM Speed and Noise
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Solution Overview
Problem
The signal amplification speed in Dynamic Random Access Memory (DRAM) is slow, and noise is easily generated, affecting the performance of semiconductor memory devices.
Innovation Solution
A control amplifying circuit comprising a power supply output circuit, an isolation control circuit, and an amplifying circuit, which adjusts voltage values based on power supply switching signals and control commands to optimize signal amplification, including selecting between multiple preset voltage values and generating isolation control signals to improve amplification speed and reduce noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a sense amplifier is used for signal amplification in DRAM, then signal amplification is achieved, but the amplification speed is slow and noise is easily generated
Solution Approach 1:
The patent applies dynamics by making the power supply voltage dynamic rather than fixed. The power supply output circuit selects between at least two preset voltage values based on the amplification phase, enabling the system to adapt its voltage level to the current operational state. This dynamic voltage adjustment optimizes both amplification speed and noise characteristics throughout the amplification process.
Solution Approach 2:
The patent implements parameter changes by varying the power supply voltage parameter during different amplification phases. The power supply output circuit changes the voltage level from a first preset voltage value to a second preset voltage value according to the amplification phase, thereby optimizing the amplification process. This parameter adjustment directly addresses the contradiction by improving speed during critical phases while reducing noise during stable phases.
2Speed
If the power supply voltage is increased to improve amplification speed, then signal amplification speed improves, but noise generation increases
Solution Approach 1:
The patent applies periodic action by implementing a multi-phase amplification process where the power supply voltage is periodically adjusted according to the amplification phase. Different voltage levels are applied at different time periods corresponding to different amplification stages, allowing the system to achieve high speed when needed while minimizing noise during other periods.
Solution Approach 2:
The patent makes the power supply system dynamic by enabling real-time voltage selection based on amplification phase. The power supply output circuit dynamically switches between preset voltage values, allowing the system to optimize the balance between speed and noise generation during the amplification process rather than using a fixed voltage level.
Data Source
AI summary
A control amplifying circuit includes a power supply output circuit, an isolation control circuit and an amplifying circuit. The power supply output circuit is configured to receive a power supply switching signal, and select one preset voltage value from at least two preset voltage values according to the power supply switching signal to output as a preset power supply signal. The isolation control circuit is configured to receive a control command signal and the preset power supply signal, and generate an isolation control signal according to the control command signal. The amplifying circuit is configured to receive the isolation control signal and a signal to be processed, and amplify the signal to be processed based on the isolation control signal to obtain a target amplified signal.