SP706EN-L/TR

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The SP706EN-L/TR is a 3.3V reset supervisor circuit. Reset supervisors provide system-level reset capability to electronic systems by monitoring the supply voltage, and resetting the system when certain conditions are detected. This feature is important for reliable operation of circuits in the presence of changes in power, such as power surges, brownouts and system restarts. The SP706EN-L/TR is suitable for a range of electronic systems, including those that process high data rates, such as audio, modem, multimedia, and communication equipment.

Application Field

The SP706EN-L/TR is designed for a range of dedicated applications, including microprocessor reset, reset supervision of digital circuits, analog circuits, and power supply monitoring/transients/voltage supervisor. It is a suitable choice for microprocessor or system power reset in demanding applications such as industrial, automotive and high-speed digital systems. It features a wide range of supply voltages, from +2.25V to +5V, and is pin compatible with other popular reset supervisors sold in the market, so that users do not need to re-design their system design to fit a different supervisor device.

Working Principle

The SP706EN-L/TR reset supervisor works by monitoring voltage within an electronic system. In normal operation, the input voltage (Vin) is constantly monitored. If the voltage drops below a pre-determined threshold, a reset signal is sent to the control circuit of the system, causing it to reset. Similarly, if the voltage rises above the other threshold level, a reset signal is generated.

The reset supervisor also monitors the voltage input rate. If the voltage falls below the threshold level at a rate that exceeds the pre-determined trip point, a reset signal is generated. This feature ensures that the system can still properly reset even in cases where the power input voltage drops rapidly, as is usually the case during power surges and start-up.

The SP706EN-L/TR has an optional manual reset input, which allows the user to manually generate a reset signal when desired. This manual reset input is often used to reset the system between tests or for other debugging purposes.

Conclusion

The SP706EN-L/TR is a 3.3V reset supervisor circuit that is suitable for a range of different dedicated applications. It includes features such as voltage monitoring, input rate monitoring, and an optional manual reset input, making it a convenient and effective choice for electronic systems that require reliable power supply reset capabilities.

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