ADM809-5SAKSZ-RL7

Product Overview

Category

ADM809-5SAKSZ-RL7 belongs to the category of voltage monitoring and reset ICs.

Use

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

Characteristics

• Voltage monitoring range: 1.2V to 5.0V
• Reset threshold accuracy: ±1.5%
• Low power consumption: typically 12µA
• Small package size: SOT-23-3
• RoHS compliant

Package and Quantity

ADM809-5SAKSZ-RL7 is available in a SOT-23-3 package. It is typically sold in reels containing 3000 units.

Specifications

• Supply voltage range: 1.2V to 5.5V
• Reset threshold options: 2.63V, 2.93V, 3.08V, 4.38V, 4.63V, 4.75V
• Operating temperature range: -40°C to +85°C
• Power-on reset time: 140ms (typical)
• Open-drain output configuration

Pin Configuration

ADM809-5SAKSZ-RL7 has three pins arranged as follows:

```

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| | --| VDD | --| /RESET| --| GND | |_______| ```

Pin Description: - VDD: Supply voltage input - /RESET: Active-low reset output - GND: Ground reference

Functional Features

1. Voltage Monitoring: ADM809-5SAKSZ-RL7 continuously monitors the supply voltage and compares it with the preset threshold.
2. Reset Generation: When the supply voltage drops below the threshold, the /RESET pin is asserted low, initiating a system reset.
3. Precision: The reset threshold accuracy of ±1.5% ensures reliable voltage monitoring and reset functionality.
4. Low Power Consumption: With a typical current consumption of 12µA, this IC minimizes power usage in battery-powered applications.

Advantages and Disadvantages

Advantages

• Wide operating voltage range allows compatibility with various systems.
• Small package size enables space-saving integration into compact designs.
• Accurate reset threshold ensures reliable system reset.
• Low power consumption prolongs battery life in portable devices.

Disadvantages

• Limited reset threshold options may not cater to all voltage monitoring requirements.
• Lack of adjustable threshold limits customization possibilities.

Working Principles

ADM809-5SAKSZ-RL7 operates based on a voltage comparator circuit. It compares the supply voltage with the preset threshold voltage. When the supply voltage drops below the threshold, the comparator triggers the reset circuitry, asserting the /RESET pin low. This initiates a system reset until the supply voltage rises above the threshold again.

Application Field Plans

ADM809-5SAKSZ-RL7 finds application in various electronic systems where reliable voltage monitoring and reset functionality are crucial. Some potential application fields include:

1. Microcontrollers: Ensuring proper operation by monitoring the supply voltage and initiating a reset if necessary.
2. Embedded Systems: Preventing data corruption or system malfunction due to voltage fluctuations.
3. Battery-Powered Devices: Extending battery life by efficiently managing power and preventing deep discharge.
4. Industrial Control Systems: Maintaining stable operation by monitoring power supply integrity.

Alternative Models

1. ADM811: Offers adjustable reset threshold options for greater flexibility.
2. MAX809: Provides additional features like manual reset input and watchdog timer functionality.
3. MCP102: Includes a power-on reset delay feature for controlled system startup.

These alternative models offer similar voltage monitoring and reset capabilities, but with varying additional features and specifications.

In conclusion, ADM809-5SAKSZ-RL7 is a voltage monitoring and reset IC that ensures reliable operation in electronic systems. Its compact size, low power consumption, and accurate threshold make it suitable for various applications. However, limited threshold options and lack of adjustability may restrict its use in certain scenarios.