Dynamic Enable Signal Pulse Width Control for Sense Amplifier Timing
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Solution Overview
Problem
The existing sense amplifier circuits in semiconductor memory devices face challenges in securing a sufficient timing margin during high-speed operations and managing current consumption due to a constant pulse width of the enable signal, which is not adjusted according to the swing width of the data transmitted, leading to inefficiencies in data transmission.
Innovation Solution
A data transmission circuit that includes an enable signal generation unit to generate a second enable signal with a pulse width controlled based on the swing width of the data, allowing the sense amplification unit to sense and amplify data accordingly, thereby adjusting the amplification period to secure timing margins and reduce current consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the pulse width of the enable signal is increased to secure timing margin for data transmission, then the timing margin is improved, but current consumption increases due to extended operation period of the IOSA
Solution Approach 1:
The enable signal pulse width is made dynamic rather than fixed, adjusting according to the swing width of input data. When swing width is small, a longer pulse width is provided to ensure sufficient timing margin for transistor switching. When swing width is large, a shorter pulse width suffices, reducing current consumption during high-speed operations.
Solution Approach 2:
The pulse width parameter of the enable signal is changed based on the swing width condition of the input data. The circuit detects the swing width and selectively applies different pulse width values (first pulse width for small swing, second pulse width for large swing) to optimize both timing margin and power consumption.
2Use of energy by moving object
If the pulse width of the enable signal is decreased to reduce current consumption during high-speed operation, then current consumption is reduced, but timing margin becomes insufficient for reliable data transmission
Solution Approach 1:
The enable signal pulse width is made dynamic rather than fixed, adjusting according to the swing width of input data. When swing width is small, a longer pulse width is provided to ensure sufficient timing margin for transistor switching. When swing width is large, a shorter pulse width suffices, reducing current consumption during high-speed operations.
Solution Approach 2:
The pulse width parameter of the enable signal is changed based on the swing width condition of the input data. The circuit detects the swing width and selectively applies different pulse width values (first pulse width for small swing, second pulse width for large swing) to optimize both timing margin and power consumption.
3Reliability
If the IOSA operation is extended to ensure data transmission completion, then data transmission reliability is improved, but current consumption increases due to continuous operation
Solution Approach 1:
The IOSA operation is controlled by periodic enable signals with dynamically adjusted pulse widths. The circuit uses detection signals to determine the appropriate operation duration, activating the IOSA only for the necessary period required for data transmission based on the input data swing width, thereby avoiding unnecessary continuous operation and reducing power consumption.
Data Source
AI summary
A data transmission circuit includes an enable signal generation unit configured to receive a first enable signal and generate a second enable signal having a pulse width controlled according to a swing width of data inputted through a first data line, and a sense amplification unit configured to sense and amplify the data inputted through the first data line in response to the second enable signal, and transmit the amplified data to a second data line.