Supervisory Circuits
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Supervisory Circuits

Analog Devices power supply voltage monitors and microprocessor supervisors monitor positive and negative power supplies, with integration of up to eight supply monitors in a tiny package. These devices generate a reset signal if any power supply goes above or below the user-defined threshold. Reset times are usually fixed at 200 ms or are adjustable with a single capacitor. Aside from power supply monitoring, CPUs and ASICs can also be supervised by an integrated watchdog timer.
Analog Devices power supply voltage monitors and microprocessor supervisors monitor positive and negative power supplies, with integration of up to eight supply monitors in a tiny package. These devices generate a reset signal if any power supply goes above or below the user-defined threshold. Reset times are usually fixed at 200 ms or are adjustable with a single capacitor. Aside from power supply monitoring, CPUs and ASICs can also be supervised by an integrated watchdog timer.

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Analog Devices dual-supply supervisory circuits help simplify design due to their high accuracy, adjustable thresholds and tolerances, and a guaranteed reset signal down to an industry-leading low of 0.5 V. Most ADI supervisors exhibit ±1.5% threshold accuracy around the nominal threshold voltage—minimizing the required system voltage margin and probability of system malfunction. Voltage supervisors with adjustable or pin-selectable thresholds and tolerances provide users with maximum flexibility, allowing a single part to be used across multiple designs.
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Analog Devices quad-supply supervisory circuits help simplify design due to their high accuracy, adjustable thresholds and tolerances, and a guaranteed reset signal down to an industry-leading low of 0.5 V. Most ADI supervisors exhibit ±1.5% threshold accuracy around the nominal threshold voltage—minimizing the required system voltage margin and probability of system malfunction. Voltage supervisors with pin or I2C/SMBus adjustable thresholds and tolerances provide users with maximum flexibility, which allows a single part to be used across multiple designs.
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Analog Devices single-supply supervisory circuits offer many benefits that help simplify design, such as high accuracy, adjustable thresholds and tolerances, and a guaranteed RESET signal down to a low supply voltage. Most ADI supervisors exhibit ±1.5% threshold accuracy around the nominal threshold voltage, minimizing the required system voltage margin and probability of system malfunction. Voltage supervisors with adjustable or pin-selectable thresholds and tolerances provide users with maximum flexibility, allowing a single part to be used across multiple designs. ADI supervisors also guarantee a valid reset signal to an industry-leading low of 0.5 V to help preserve system integrity.
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Analog Devices triple-supply circuits offer many benefits that help simplify design, such as high accuracy, adjustable thresholds and tolerances, and a guaranteed reset signal down to a low supply voltage. Most ADI supervisors exhibit ±1.5% threshold accuracy around the nominal threshold voltage, which minimizes the required system voltage margin and probability of system malfunction. Voltage supervisors with adjustable or pin-selectable thresholds and tolerances provide users with maximum flexibility, allowing a single part to be used across multiple designs.
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Supervisory circuits with watchdog timers from Analog Devices reset the microprocessor if it fails to strobe within a preset timeout period, with multiple reset threshold options available throughout the portfolio. By consuming as little as 3 µA, our supply monitors are suitable for use in low power applications, as well as automotive infotainment, microprocessor systems, intelligent instruments, supervising DSPs/microcontrollers, and industrial and portable equipment wireless systems.