Oscillator Fault Signaling via Control Terminal Voltage
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Solution Overview
Problem
Existing oscillators face challenges in detecting and notifying abnormal states with a limited number of terminals, making it difficult to maintain compactness and reliability while ensuring effective fault detection.
Innovation Solution
Incorporating an abnormality detection circuit within the oscillator's circuit device that sets the control terminal to an abnormality detection voltage when an abnormal state is detected, allowing external devices to monitor this voltage for fault notification without the need for additional terminals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional terminals are added for abnormal state notification, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The control terminal is designed to serve dual purposes: its primary function of controlling the oscillation circuit and an additional function of notifying abnormal states through voltage level changes. This multi-functionality eliminates the need for separate notification terminals, resolving the contradiction between reliability improvement and device complexity.
Solution Approach 2:
The oscillation circuit uses its own control terminal for abnormal state notification without requiring external dedicated notification infrastructure. The circuit self-manages the notification function by utilizing existing control terminal infrastructure, thereby avoiding additional device complexity while improving reliability.
2Device complexity
If the number of terminals is reduced for compactness, then the device complexity is reduced, but the abnormal state notification capability deteriorates
Solution Approach 1:
The control terminal performs multiple functions including circuit control and abnormal state notification. This multi-functionality allows the oscillator to maintain compactness with fewer terminals while preserving complete abnormal state notification capability, thus resolving the contradiction between device complexity reduction and reliability maintenance.
3Device complexity
If existing terminals are used for fault indication, then the device complexity is reduced, but the measurement precision of fault detection may be affected
Solution Approach 1:
Voltage level changes on the control terminal serve as an intermediary signal for abnormal state notification. The control terminal's voltage state acts as a mediator that conveys fault information without requiring direct measurement infrastructure, maintaining detection accuracy while using existing terminal infrastructure.
Data Source
AI summary
An oscillator includes a resonator, a circuit device that is electrically coupled to the resonator and generates a clock signal, a control terminal that is electrically coupled to the circuit device, and an output terminal that is electrically coupled to the circuit device and outputs the clock signal. The circuit device includes an abnormality detection circuit and sets a potential of the control terminal to an abnormality detection voltage when an abnormal state is detected by the abnormality detection circuit.