ADM809LART-REEL

Product Overview

Category

The ADM809LART-REEL belongs to the category of voltage monitoring and reset ICs (Integrated Circuits).

Use

This product is primarily used for monitoring the voltage level in electronic systems and providing a reset signal when the voltage falls below a certain threshold.

Characteristics

• Voltage monitoring: The ADM809LART-REEL can monitor the supply voltage and generate a reset signal when it drops below a specified level.
• Low power consumption: This IC operates with low power consumption, making it suitable for battery-powered applications.
• Wide operating voltage range: It can operate within a wide voltage range, typically from 1.2V to 5.5V.
• Adjustable reset threshold: The reset threshold voltage can be set using external resistors, allowing flexibility in different applications.
• Precision voltage reference: The ADM809LART-REEL incorporates a precision voltage reference, ensuring accurate voltage monitoring.

Package and Quantity

The ADM809LART-REEL is available in a small SOT-23 package. It is typically sold in reels containing a specific quantity, such as 3000 units per reel.

Specifications

• Supply Voltage Range: 1.2V to 5.5V
• Reset Threshold Voltage Options: Various options available, adjustable using external resistors
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: Typically 7µA
• Reset Timeout Period: Typically 140ms
• Power-On Reset Delay: Typically 100ms

Pin Configuration

The ADM809LART-REEL has three pins:

1. VCC: This pin is connected to the positive supply voltage.
2. GND: This pin is connected to the ground or negative supply voltage.
3. RESET: This pin outputs the reset signal when the voltage falls below the specified threshold.

Functional Features

• Voltage Monitoring: The ADM809LART-REEL continuously monitors the supply voltage.
• Reset Signal Generation: When the voltage drops below the set threshold, the IC generates a reset signal on the RESET pin.
• Power-On Reset Delay: It provides a power-on reset delay to ensure stable operation during power-up.
• Manual Reset Input: An optional manual reset input allows for external control of the reset function.
• Low Quiescent Current: The IC operates with low quiescent current, minimizing power consumption.

Advantages and Disadvantages

Advantages

• Accurate voltage monitoring and reset functionality.
• Wide operating voltage range enables compatibility with various systems.
• Adjustable reset threshold provides flexibility in different applications.
• Low power consumption makes it suitable for battery-powered devices.
• Small package size allows for space-efficient designs.

Disadvantages

• Limited number of pins may restrict additional functionalities.
• Not suitable for high-voltage applications beyond its specified range.

Working Principles

The ADM809LART-REEL works by comparing the supply voltage with the internally set threshold voltage. When the supply voltage drops below this threshold, the IC triggers the reset signal. This signal remains active until the supply voltage rises above the threshold and the reset timeout period elapses.

Application Field Plans

The ADM809LART-REEL finds applications in various electronic systems where voltage monitoring and reset functionality are crucial. Some potential application fields include:

1. Microcontrollers and Microprocessors: Ensuring reliable system startup and preventing erratic behavior due to voltage fluctuations.
2. Embedded Systems: Providing a reset signal to initialize the system after power-up or in case of voltage drops.
3. Battery-Powered Devices: Monitoring battery voltage and triggering a reset when it reaches critical levels to prevent data loss or system malfunction.
4. Industrial Control Systems: Maintaining stable operation by resetting the system in case of power supply disturbances.

Alternative Models

1. ADM811: Similar voltage monitoring and reset IC with adjustable threshold and various package options.
2. MAX809: Voltage monitor and reset IC with similar features, available in different package sizes.
3. MCP101: Precision voltage monitor and reset IC with adjustable threshold and low power consumption.

These alternative models offer similar functionality to the ADM809LART-REEL and can be considered as alternatives based on specific application requirements.

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