ADM809RAKSZ-REEL

Product Overview

Category

ADM809RAKSZ-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: ADM809RAKSZ-REEL monitors the supply voltage and provides a reset signal when it falls below a specified threshold.
• Reset function: It ensures that the microcontroller or other digital circuitry starts operating from a known state after power-up or brownout conditions.
• Low power consumption: The device operates with low quiescent current, making it suitable for battery-powered applications.
• Wide operating voltage range: It can operate within a wide range of supply voltages, typically from 1.1V to 5.0V.
• Small package size: ADM809RAKSZ-REEL is available in a small SOT-23 package, which makes it suitable for space-constrained designs.

Package and Quantity

ADM809RAKSZ-REEL is packaged in a SOT-23 package. It is typically sold in reels containing a specific quantity of units, such as 3000 pieces per reel.

Specifications

• Supply Voltage Range: 1.1V to 5.0V
• Reset Threshold Voltage Options: 2.93V, 3.08V, 3.15V, 4.38V, 4.63V, 4.75V
• Quiescent Current: 7µA (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

ADM809RAKSZ-REEL has three pins:

1. VCC: This pin is connected to the positive supply voltage.
2. GND: This pin is connected to the ground reference.
3. RESET: This pin outputs the reset signal to the microcontroller or digital circuitry.

Functional Features

• Voltage Monitoring: ADM809RAKSZ-REEL continuously monitors the supply voltage and compares it with the preset threshold voltage.
• Reset Generation: When the supply voltage falls below the threshold, the device generates a reset signal on the RESET pin.
• Manual Reset Input: It provides an option for manual reset by connecting an external push-button switch to the RESET pin.
• Power-On Reset Delay: The device includes a power-on reset delay circuit to ensure that the reset signal is not asserted immediately after power-up.

Advantages and Disadvantages

Advantages

• Reliable voltage monitoring and reset functionality.
• Low power consumption.
• Wide operating voltage range.
• Small package size for space-constrained designs.
• Manual reset option for flexibility.

Disadvantages

• Limited number of available threshold voltage options.
• Not suitable for applications requiring precise voltage monitoring.

Working Principles

ADM809RAKSZ-REEL 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 device asserts the reset signal, indicating a power failure or brownout condition. The reset signal remains active until the supply voltage rises above the threshold again.

Application Field Plans

ADM809RAKSZ-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 initialization and operation of microcontrollers during power-up and brownout conditions.
2. Embedded Systems: Providing a reset signal to digital circuitry in embedded systems to maintain system integrity.
3. Battery-Powered Devices: Monitoring battery voltage and initiating a reset when the voltage drops below a certain level to prevent erratic behavior.

Alternative Models

There are several alternative models available in the market that offer similar voltage monitoring and reset functionality. Some popular alternatives to ADM809RAKSZ-REEL include:

1. MAX809: Manufactured by Maxim Integrated, it offers a wide range of threshold voltage options.
2. MCP100: Produced by Microchip Technology, it provides additional features like adjustable reset delay.
3. TPS3808: Offered by Texas Instruments, it includes a manual reset input and adjustable reset threshold.

These alternative models can be considered based on specific application requirements and desired features.

In conclusion, ADM809RAKSZ-REEL is an integrated circuit used for voltage monitoring and reset functions. It offers reliable performance, low power consumption, and a wide operating voltage range. Its small package size makes it suitable for space-constrained designs. However, it has limited threshold voltage options and may not be suitable for applications requiring precise voltage monitoring. Alternative models such as MAX809, MCP100, and TPS3808 provide similar functionality with additional features.