Voltage Testing Circuit Error Protection Scheme
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Solution Overview
Problem
Voltage testing circuits in electronic devices face errors due to voltage levels outside acceptable ranges, leading to erroneous operations in amplifiers and input/output drivers, which are not adequately addressed by existing technologies.
Innovation Solution
The implementation of a voltage testing circuit that includes conditioning circuitry to ensure test signals are within a headroom voltage gap of the amplifier's supply voltage, using a comparator to prevent output signals from exceeding the input/output driver's supply voltage, and employing a divider circuit to adjust voltage levels, thereby maintaining a safe operational range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the voltage testing circuit directly measures signals without conditioning, then the measurement process is simple, but the amplifier and input/output driver produce erroneous operations when voltage levels are outside acceptable ranges
Solution Approach 1:
The patent applies preliminary action by conditioning the test signal before it reaches the amplifier and input/output driver. The conditioning circuitry adjusts the voltage level of the test signal in advance to ensure it falls within the acceptable input range, preventing erroneous operations before they can occur. This proactive approach maintains measurement simplicity while ensuring operational reliability.
2Adaptability or versatility
If the voltage testing circuit allows signals to exceed supply voltage levels, then the voltage measurement range is extended, but non-linear behavior and errors occur in the amplifier and input/output driver
Solution Approach 1:
The patent introduces an intermediary conditioning circuit between the voltage source under test and the amplifier/input/output driver. This intermediary component transforms the incoming voltage signal to ensure it remains within the linear operating range of subsequent circuit stages, allowing the system to handle a wide voltage range while maintaining measurement linearity and accuracy.
3Device complexity
If no voltage conditioning is applied, then the device complexity is reduced, but errors occur due to voltage levels outside acceptable ranges
Solution Approach 1:
The patent applies local quality by implementing voltage conditioning specifically at the input stage where it is most needed, rather than throughout the entire system. The conditioning circuitry is strategically placed to condition only the test signal before it enters the amplifier and input/output driver, providing targeted error prevention without unnecessarily complicating the rest of the circuit architecture.
Data Source
AI summary
An electronic device, such as a memory device, may include various circuit components. The electronic device may also include one or more voltage testing circuits to determine whether signals of one or more of the circuit components are within acceptable voltage ranges of the respective circuit components. Systems and methods are described to improve correct voltage measurement of the received signals by a voltage testing circuit. In particular, multiple supply voltage levels are provided to different components of the voltage testing circuit to provide a sufficient headroom voltage gap between received signals and the supply voltages. For example, some active circuits (e.g., operational amplifiers) of the voltage testing circuit may receive a higher supply voltage of the electronic device compared to one or more other circuits of the voltage testing circuit.