Dual-Stage Data Transmission Circuit for Stable Output Voltage
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Solution Overview
Problem
Conventional data transmission circuits face reliability issues due to degradation in transistor leakage current characteristics and voltage variations, leading to unstable output voltage levels, which affects data transmission reliability.
Innovation Solution
The data transmission circuit employs a dual driving block configuration using first and second type logic elements with different threshold voltages and response times to stabilize output voltage levels by controlling current leakage, ensuring reliable data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single driving block is used to drive the output terminal, then the circuit complexity is low, but the output voltage level becomes unstable due to transistor leakage current and voltage variations
Solution Approach 1:
The driving function is segmented into two separate driving blocks: a first driving block using first type logic elements for initial driving, and a second driving block using second type logic elements for subsequent driving. This segmentation allows each block to handle specific time intervals, stabilizing the output voltage level by preventing continuous leakage current accumulation while maintaining low circuit complexity through functional division.
2Speed
If first type logic elements are used for continuous driving, then the response speed is fast, but the leakage current degrades and causes output voltage level to continuously rise
Solution Approach 1:
The driving action is divided into periodic intervals: the first driving block operates during a first time interval to provide fast response, then interrupts and transfers to the second driving block for a second time interval. This periodic switching prevents continuous leakage current from causing voltage level drift while maintaining fast response when needed, resolving the contradiction between speed and voltage stability.
3Reliability
If second type logic elements are used for continuous driving, then the leakage current is low and voltage stability is improved, but the response speed is slower
Solution Approach 1:
The first driving block using first type logic elements performs preliminary driving action to quickly establish the output voltage level. After this initial fast response, the second driving block using second type logic elements takes over for sustained driving with lower leakage current. This preliminary action approach ensures both fast response when needed and voltage stability during sustained operation.
Data Source
AI summary
A data transmission circuit may include a first driving block configured to drive an output terminal for a first time in response to a data driving signal and a level of the output terminal, and a second driving block configured to drive the output terminal for a second time after the first time, in response to the data driving signal.