ADM811RART-REEL7

Product Overview

Category

ADM811RART-REEL7 belongs to the category of integrated circuits (ICs).

Use

This product is commonly used in electronic devices for voltage monitoring and reset functions.

Characteristics

• Voltage monitoring: ADM811RART-REEL7 monitors the supply voltage and provides a reset signal when the voltage falls below a specified threshold.
• Reset function: It ensures that the microcontroller or other digital circuitry starts operating correctly after power-up or a brownout condition.
• Low power consumption: The device operates with low quiescent current, making it suitable for battery-powered applications.

Package

ADM811RART-REEL7 is available in a small 4-pin SOT-143 package.

Essence

The essence of ADM811RART-REEL7 lies in its ability to monitor the supply voltage and provide a reliable reset signal to ensure proper functioning of digital circuitry.

Packaging/Quantity

This product is typically packaged in reels containing a specific quantity of units, which may vary depending on the manufacturer's specifications.

Specifications

• Supply Voltage Range: 1.6V to 5.5V
• Threshold Voltage Options: 2.63V, 2.93V, 3.08V, 4.38V
• Reset Timeout Period: 140ms (typical)
• Quiescent Current: 8µA (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

ADM811RART-REEL7 has four pins arranged as follows:

```

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| | --| VCC |-- --| /MR |-- --| GND |-- |_______| ```

Pin descriptions: - VCC: Power supply input pin. - /MR: Active-low reset output pin. - GND: Ground reference pin.

Functional Features

1. Voltage Monitoring: ADM811RART-REEL7 continuously monitors the supply voltage and compares it with the preset threshold voltage.
2. Reset Signal Generation: When the supply voltage falls below the threshold, the device generates an active-low reset signal on the /MR pin.
3. Reset Timeout: The reset signal remains active for a fixed timeout period after the supply voltage rises above the threshold, ensuring proper system initialization.
4. Manual Reset: The /MR pin can also be used to manually assert a reset condition when required.

Advantages and Disadvantages

Advantages

• Reliable Voltage Monitoring: ADM811RART-REEL7 ensures accurate monitoring of the supply voltage, preventing erratic behavior of digital circuitry.
• Low Power Consumption: The device operates with low quiescent current, making it suitable for power-sensitive applications.
• Small Package Size: The compact SOT-143 package allows for space-efficient integration into electronic devices.

Disadvantages

• Limited Threshold Options: The available threshold voltage options may not cover all specific voltage requirements of different applications.
• Lack of Adjustable Timeout Period: The fixed reset timeout period may not be optimal for all system initialization scenarios.

Working Principles

ADM811RART-REEL7 utilizes a voltage comparator to compare the supply voltage with the preset threshold voltage. When the supply voltage drops below the threshold, the comparator triggers the generation of an active-low reset signal. This signal remains active for a fixed timeout period after the supply voltage rises above the threshold, ensuring proper system initialization.

Detailed Application Field Plans

ADM811RART-REEL7 finds application in various electronic devices where reliable voltage monitoring and reset functionality are crucial. Some potential application fields include: - Microcontrollers - Embedded systems - Industrial control systems - Power management circuits - Battery-powered devices

Detailed and Complete Alternative Models

1. ADM803/ADM809: These are alternative models from Analog Devices that offer similar voltage monitoring and reset functions.
2. MAX811/MAX809: These models from Maxim Integrated provide comparable features and performance.
3. MCP100: This alternative model from Microchip Technology offers voltage monitoring and reset capabilities.

These alternative models can be considered based on specific application requirements, availability, and compatibility with the target system.

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