The ADM1811-5ARTZ-REEL7 is a supervisory circuit manufactured by Analog Devices. It is designed to monitor the power supply voltage in digital systems and provide a reset signal to the microprocessor or microcontroller when the voltage falls below a specified threshold. This function ensures that the system starts up correctly and prevents data corruption during power-down events.

Applications

• Microprocessor-Based Systems
• Microcontroller-Based Systems
• Embedded Systems
• Industrial Control Systems
• Automotive Electronics

Features

• Precision Voltage Monitoring
• Fixed Threshold Voltage: 4.625 V
• Active-Low Reset Output
• Manual Reset Input
• Guaranteed Reset Assertion Down to VCC = 1 V
• Low Supply Current: 3 μA (Typical)
• Small Package: SOT-23

Benefits

• Reliable System Startup: Ensures proper system initialization by providing a reset signal during power-up.
• Data Protection: Prevents data corruption by asserting a reset signal during power-down events.
• Simplified Design: Requires minimal external components, simplifying system design and reducing board space.
• Low Power Consumption: Low supply current minimizes power consumption and extends battery life in portable applications.
• Manual Reset Capability: Allows for manual reset of the system using the manual reset input.

Additional Details

The ADM1811-5ARTZ-REEL7 supervisory circuit monitors the supply voltage and asserts a reset signal when the voltage drops below the fixed threshold of 4.625 V. The reset signal remains asserted for a specified reset timeout period after the voltage rises above the threshold, ensuring that the microprocessor or microcontroller has sufficient time to initialize. The device features a manual reset input that allows the user to manually reset the system. The low supply current and small SOT-23 package make it ideal for space-constrained and battery-powered applications. The “REEL7” suffix indicates that the device is supplied on tape and reel, which is suitable for automated assembly processes.