ADM812LART-REEL

Product Overview

Category

The ADM812LART-REEL belongs to the category of voltage supervisors.

Use

It is primarily used for monitoring and supervising the voltage levels in electronic circuits.

Characteristics

• Voltage monitoring: The ADM812LART-REEL is designed to monitor the supply voltage and provide a reset signal when it falls below a certain threshold.
• Low power consumption: It 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 1.6V to 5.5V.
• Adjustable reset threshold: The reset threshold voltage can be adjusted using external resistors.
• Small package size: The ADM812LART-REEL comes in a small SOT-23 package, which makes it suitable for space-constrained applications.

Packaging/Quantity

The ADM812LART-REEL is available in tape and reel packaging, with 3000 units per reel.

Specifications

• Supply voltage range: 1.6V to 5.5V
• Reset threshold voltage options: 2.93V, 3.08V, 3.15V, 4.38V, or adjustable
• Reset timeout period: 140ms (typical)
• Quiescent current: 7µA (typical)
• Operating temperature range: -40°C to +85°C

Detailed Pin Configuration

The ADM812LART-REEL has three pins:

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

Functional Features

• Voltage monitoring: The ADM812LART-REEL continuously monitors the supply voltage.
• Reset signal generation: When the monitored voltage falls below the threshold, the ADM812LART-REEL generates a reset signal.
• Adjustable threshold: The reset threshold voltage can be adjusted using external resistors.
• Power-on reset: The ADM812LART-REEL provides a reset signal when power is initially applied.

Advantages and Disadvantages

Advantages

• Low power consumption makes it suitable for battery-powered applications.
• Wide operating voltage range allows for flexibility in various circuits.
• Small package size enables use in space-constrained designs.
• Adjustable reset threshold provides customization options.

Disadvantages

• Limited reset timeout period may not be suitable for all applications.
• Lack of built-in hysteresis may result in potential noise-related issues.

Working Principles

The ADM812LART-REEL operates by comparing the supply voltage with the set threshold voltage. When the supply voltage drops below the threshold, the reset output is activated. This reset signal remains active until the supply voltage rises above the threshold and the reset timeout period elapses.

Detailed Application Field Plans

The ADM812LART-REEL finds application in various fields, including:

1. Microcontrollers: It ensures proper reset functionality during power-up or voltage fluctuations, preventing erratic behavior.
2. Communication systems: It provides reliable monitoring of the power supply, ensuring system stability.
3. Industrial control systems: It helps maintain system integrity by resetting microprocessors in case of voltage dips or spikes.
4. Automotive electronics: It ensures proper functioning of critical components by monitoring the supply voltage.

Detailed and Complete Alternative Models

1. ADM811: Similar to ADM812LART-REEL, but with fixed reset threshold voltage options.
2. MAX809: Voltage supervisor with adjustable reset threshold and integrated watchdog timer.
3. TPS3808: Ultra-low-power voltage supervisor with adjustable reset threshold and manual reset input.

These alternative models offer similar functionality to the ADM812LART-REEL, catering to different application requirements.

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