Multi-Stage Receiver Circuit Sequencing to Prevent Output Glitches
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Solution Overview
Problem
Semiconductor apparatuses experience abnormal operations due to unexpected glitches when receiver circuits are activated or deactivated, particularly at high frequencies, leading to abnormal output signals that can affect internal circuit operations.
Innovation Solution
A receiver circuit design incorporating multiple amplification stages and an enable control circuit that sequentially activates and deactivates these stages in a specific order, using enable signals to manage the activation and deactivation process, thereby minimizing glitches by staggered enablement and disablement of amplification stages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the receiver circuit is activated or deactivated to reduce power consumption, then power consumption is reduced, but unexpected glitches occur causing abnormal output signals
Solution Approach 1:
The receiver circuit is divided into multiple amplification stages (first amplification stage, second amplification stage, etc.), each controlled by separate enable signals. This segmentation allows gradual activation and deactivation of stages rather than switching the entire receiver circuit at once, reducing power consumption while maintaining signal stability during transitions.
Solution Approach 2:
The enable control circuit generates enable signals in a specific sequence before full operation is needed. The first amplification stage is activated first, followed by the second amplification stage, ensuring that signal paths are properly established before subsequent stages engage, preventing glitches during activation.
Solution Approach 3:
During deactivation, the amplification stages are disabled in reverse order of their activation sequence. The second amplification stage is deactivated first, then the first amplification stage, ensuring that signal flow is properly terminated from the output end backward, preventing abnormal output signals during shutdown.
2Productivity
If the receiver circuit operates at high frequency to improve processing speed, then productivity is improved, but abnormal operations occur due to glitches
Solution Approach 1:
The enable control circuit dynamically adjusts the activation sequence of amplification stages based on operational requirements. By controlling the timing and sequence of enable signals, the circuit can operate at high frequencies while maintaining stability through coordinated stage transitions.
Solution Approach 2:
The enable control circuit monitors the operational state of amplification stages and adjusts enable signal timing accordingly. This feedback mechanism ensures that stages are activated and deactivated in the correct sequence, preventing glitches even during high-frequency operations.
Data Source
AI summary
A receiver circuit includes a first amplification stage and a second amplification stage. The first amplification stage is configured to generate a first output signal by differentially amplifying an input signal pair. The second amplification stage is configured to generate a second output signal by amplifying the first output signal. The receiver circuit is configured to deactivate the second amplification stage and then deactivate the first amplification stage.