ADM809TART-REEL

Product Overview

Category

ADM809TART-REEL belongs to the category of voltage supervisors or reset ICs.

Use

It is primarily used for monitoring the power supply voltage in electronic systems and ensuring a proper reset sequence during power-up.

Characteristics

• Voltage monitoring: ADM809TART-REEL monitors the power supply voltage and provides a reset signal when the voltage falls below a certain threshold.
• Reset generation: It generates a reset signal to ensure a controlled startup of the system.
• Low power consumption: The device operates with low power consumption, making it suitable for battery-powered applications.
• Wide operating voltage range: It can operate within a wide range of input voltages, typically from 1.1V to 5V.
• Adjustable reset threshold: The reset threshold voltage can be adjusted using external resistors.
• Small package size: ADM809TART-REEL is available in a small SOT-23 package, which makes it suitable for space-constrained designs.

Package and Quantity

ADM809TART-REEL is packaged in a SOT-23 package. It is typically supplied in reels containing a specific quantity of units, depending on the manufacturer's specifications.

Specifications

• Supply Voltage Range: 1.1V to 5V
• Reset Threshold Voltage: Adjustable (via external resistors)
• Reset Timeout Period: Fixed or adjustable (depending on the variant)
• Operating Temperature Range: -40°C to +85°C
• Package Type: SOT-23

Pin Configuration

ADM809TART-REEL has three pins:

1. VCC: Power supply input pin.
2. GND: Ground reference pin.
3. RESET: Output pin that provides the reset signal to the system.

Functional Features

• Voltage Monitoring: ADM809TART-REEL continuously monitors the power supply voltage.
• Reset Generation: It generates a reset signal when the voltage falls below the preset threshold.
• Adjustable Threshold: The reset threshold voltage can be adjusted using external resistors.
• Reset Timeout: Some variants of ADM809TART-REEL offer an adjustable reset timeout period, allowing customization based on system requirements.
• Power-On Reset: It ensures a controlled startup by providing a reset signal during power-up.

Advantages and Disadvantages

Advantages

• Reliable Power Monitoring: ADM809TART-REEL provides accurate monitoring of the power supply voltage, ensuring proper system operation.
• Controlled Startup: It enables a controlled startup sequence by generating a reset signal during power-up.
• Low Power Consumption: The device operates with low power consumption, making it suitable for battery-powered applications.
• Adjustable Threshold: The reset threshold voltage can be customized to meet specific system requirements.

Disadvantages

• Limited Reset Timeout Options: Some variants may have fixed reset timeout periods, limiting flexibility in certain applications.
• Single Voltage Monitoring: ADM809TART-REEL is designed for monitoring a single power supply voltage. It may not be suitable for systems requiring multiple voltage monitoring.

Working Principles

ADM809TART-REEL works by continuously monitoring the power supply voltage. When the voltage falls below the preset threshold, it generates a reset signal. This reset signal remains active until the voltage rises above the threshold or until a specified timeout period elapses. The device ensures a controlled startup by providing a reset signal during power-up, preventing erratic behavior caused by unstable power supply conditions.

Application Field Plans

ADM809TART-REEL finds applications in various electronic systems where reliable power monitoring and controlled startup are essential. Some potential application fields include:

1. Microcontrollers and Microprocessors: It ensures proper initialization and reliable operation of these devices.
2. Embedded Systems: ADM809TART-REEL provides a reset signal to ensure a controlled startup of embedded systems.
3. Industrial Control Systems: It helps maintain stable operation and prevent data corruption in industrial control systems.
4. Automotive Electronics: The device ensures reliable power monitoring and controlled startup in automotive electronic systems.

Alternative Models

1. ADM803/ADM809 Series: These are similar voltage supervisors with various threshold options and package sizes.
2. MAX809/MAX810 Series: These ICs offer similar functionality with adjustable reset thresholds and different package options.
3. TPS380x Series: These voltage supervisors provide additional features such as manual reset input and watchdog timer functionality.

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

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