ADM809RAKS-REEL

Product Overview

Category

ADM809RAKS-REEL belongs to the category of voltage monitoring and reset 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 range: 1.2V to 5.0V
• Reset threshold accuracy: ±1.5%
• Low power consumption: typically 10µA
• Small package size: SOT-23-3
• Wide operating temperature range: -40°C to +85°C

Package and Quantity

ADM809RAKS-REEL is available in a SOT-23-3 package. It is typically sold in reels containing a quantity of 3000 units.

Specifications

• Supply voltage range: 1.2V to 5.5V
• Reset threshold voltage options: 2.63V, 2.93V, 3.08V, 4.38V, and 4.63V
• Reset timeout period: 140ms (min)
• Quiescent current: 10µA (typical)
• Power-on reset delay: 100ms (typical)

Pin Configuration

ADM809RAKS-REEL has three pins arranged as follows:

```

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| | --| VCC | --| /RESET| --| GND | |_______| ```

Pin Descriptions: - VCC: Power supply input pin - /RESET: Active-low reset output pin - GND: Ground reference pin

Functional Features

1. Voltage Monitoring: ADM809RAKS-REEL continuously monitors the supply voltage and compares it with the preset threshold voltage.
2. Reset Signal Generation: When the supply voltage falls below the threshold, the /RESET pin is asserted low, indicating a reset condition.
3. Reset Timeout: The reset signal remains active for a minimum timeout period of 140ms after the voltage rises above the threshold.
4. Power-On Reset Delay: Upon power-up, the device ensures a stable voltage before generating the reset signal.

Advantages and Disadvantages

Advantages

• Wide operating voltage range allows compatibility with various systems.
• Accurate reset threshold voltage ensures reliable monitoring.
• Low power consumption minimizes energy usage.
• Small package size enables space-saving designs.
• Extended temperature range makes it suitable for harsh environments.

Disadvantages

• Limited reset timeout options may not be suitable for all applications.
• Lack of adjustable reset threshold limits customization possibilities.

Working Principles

ADM809RAKS-REEL operates based on a voltage comparator circuit. It compares the supply voltage with the preset threshold voltage using an internal reference. When the supply voltage drops below the threshold, the comparator triggers the reset signal, which remains active for a specified timeout period. Once the voltage rises above the threshold, the reset signal is deasserted.

Application Field Plans

ADM809RAKS-REEL finds applications in various electronic systems where voltage monitoring and reset functionality are crucial. Some potential application fields include: 1. Microcontrollers and microprocessors 2. Embedded systems 3. Industrial control systems 4. Power management circuits 5. Battery-powered devices 6. Automotive electronics

Alternative Models

1. ADM803/ADM809: These models offer similar voltage monitoring and reset features but come in different package options.
2. MAX809: This model from Maxim Integrated provides comparable functionality and comes in various package options.
3. TPS380x: Texas Instruments offers a range of voltage supervisors that can serve as alternatives to ADM809RAKS-REEL.

Note: The above list is not exhaustive, and there may be other alternative models available from different manufacturers.

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