ADM812SART-REEL

Product Overview

Category

The ADM812SART-REEL 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: The ADM812SART-REEL is designed to monitor the power supply voltage and provide a reset signal when it falls below a specified threshold.
• Reset function: It ensures that the microcontroller or other digital circuitry is properly reset when the power supply voltage drops below the desired level.
• Low power consumption: The device operates with low quiescent current, making it suitable for battery-powered applications.
• Wide operating voltage range: The ADM812SART-REEL can operate within a wide voltage range, typically from 1.6V to 5.5V.
• Small package size: This IC is available in a small SOT-23 package, which is ideal for space-constrained designs.

Package and Quantity

The ADM812SART-REEL is packaged in a tape and reel format, specifically designed for automated assembly processes. Each reel contains a quantity of 3000 units.

Specifications

• Supply voltage range: 1.6V to 5.5V
• Reset threshold voltage options: 2.32V, 2.55V, 2.93V, 3.08V, 4.38V, and adjustable
• Quiescent current: 7µA (typical)
• Reset timeout period: 140ms (typical)
• Operating temperature range: -40°C to +85°C

Pin Configuration

The ADM812SART-REEL has three pins:

1. VCC: Power supply input pin.
2. GND: Ground reference pin.
3. RESET: Output pin for the reset signal.

Functional Features

• Voltage monitoring: The ADM812SART-REEL continuously monitors the VCC voltage and compares it to the preset threshold.
• Reset signal generation: When the VCC voltage falls below the threshold, the device asserts the RESET pin low, indicating a reset condition.
• Reset timeout: After power is restored, the reset signal remains asserted for a fixed period (reset timeout) to ensure proper system initialization.
• Manual reset input: An additional MR (manual reset) pin allows for external control of the reset function.

Advantages and Disadvantages

Advantages

• Reliable voltage monitoring and reset functionality.
• Low power consumption.
• Wide operating voltage range.
• Small package size for space-constrained designs.
• Automated assembly-friendly tape and reel packaging.

Disadvantages

• Limited number of available reset threshold voltage options.
• Lack of advanced features compared to more specialized voltage monitoring ICs.

Working Principles

The ADM812SART-REEL operates by comparing the VCC voltage with the preset threshold voltage. When the VCC voltage drops below the threshold, the device generates a reset signal by asserting the RESET pin low. This signal remains active for a fixed period after power is restored, ensuring proper system initialization. The manual reset input (MR pin) allows for external control of the reset function.

Application Field Plans

The ADM812SART-REEL finds applications in various electronic devices where reliable voltage monitoring and reset functionality are required. Some potential application fields include:

1. Microcontrollers: Ensuring proper reset and initialization of microcontroller-based systems.
2. Embedded systems: Providing voltage monitoring and reset capabilities for embedded systems.
3. Industrial automation: Monitoring power supply voltage in industrial automation equipment.
4. Consumer electronics: Incorporating voltage monitoring and reset functions in consumer electronic devices.
5. Medical devices: Ensuring reliable operation and reset functionality in medical equipment.

Alternative Models

1. ADM811SART-REEL: Similar to the ADM812SART-REEL, but with a different reset timeout period.
2. ADM813SART-REEL: Provides additional features such as adjustable reset threshold voltage and watchdog timer functionality.
3. MAX809SART-REEL: An alternative IC from a different manufacturer, offering similar voltage monitoring and reset capabilities.

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