ADM803TAKS-REEL

Product Overview

Category

ADM803TAKS-REEL belongs to the category of integrated circuits (ICs).

Use

This product is commonly used as a voltage supervisor or reset circuit.

Characteristics

• Low power consumption
• Wide operating voltage range
• Adjustable reset threshold voltage
• Manual reset input
• Power-on reset delay time
• Watchdog timer

Package

ADM803TAKS-REEL is available in a small SOT-23 package.

Essence

The essence of this product lies in its ability to monitor and control the power supply voltage, ensuring proper system operation.

Packaging/Quantity

ADM803TAKS-REEL is typically packaged in reels containing a quantity of 3000 units.

Specifications

• Supply Voltage Range: 1.2V to 5.5V
• Reset Threshold Voltage: Adjustable from 1.8V to 4.63V
• Manual Reset Input Voltage: 0.7V
• Power-On Reset Delay Time: 140ms (typical)
• Watchdog Timer Timeout Period: 1.6s (typical)

Detailed Pin Configuration

ADM803TAKS-REEL has three pins:

1. VCC: Power supply input pin.
2. GND: Ground reference pin.
3. MR: Manual reset input pin.

Functional Features

1. Voltage Monitoring: The ADM803TAKS-REEL continuously monitors the supply voltage and asserts a reset signal when it falls below the set threshold.
2. Adjustable Reset Threshold: The reset threshold voltage can be adjusted using external resistors, allowing flexibility in system design.
3. Manual Reset Input: The MR pin provides a means to manually assert a reset signal, overriding the voltage monitoring function.
4. Power-On Reset Delay: The device includes a power-on reset delay circuit to ensure stable operation during power-up.
5. Watchdog Timer: ADM803TAKS-REEL incorporates a watchdog timer that resets the system if it fails to receive a periodic input within the timeout period.

Advantages and Disadvantages

Advantages

• Low power consumption makes it suitable for battery-powered applications.
• Wide operating voltage range allows compatibility with various systems.
• Adjustable reset threshold provides flexibility in voltage monitoring.
• Manual reset input offers additional control over system reset.
• Power-on reset delay ensures stable operation during power-up.
• Watchdog timer enhances system reliability.

Disadvantages

• Limited number of pins may restrict its use in complex systems requiring more I/O connections.
• SOT-23 package may not be suitable for applications with space constraints.

Working Principles

ADM803TAKS-REEL operates by continuously monitoring the supply voltage using an internal voltage comparator. When the voltage falls below the set threshold, the reset output is asserted, indicating a low-voltage condition. The reset signal remains active until the voltage rises above the threshold or a manual reset is asserted.

The device also includes a power-on reset delay circuit that ensures stable operation during power-up. Additionally, the watchdog timer monitors the system's activity and resets it if no periodic input is received within the specified timeout period.

Detailed Application Field Plans

ADM803TAKS-REEL finds application in various fields, including: 1. Microcontrollers and microprocessors 2. Embedded systems 3. Industrial automation 4. Automotive electronics 5. Consumer electronics 6. Medical devices

Detailed and Complete Alternative Models

Some alternative models similar to ADM803TAKS-REEL are: 1. MAX803T: Manufactured by Maxim Integrated, this IC offers similar voltage monitoring and reset functions. 2. MCP809: Produced by Microchip Technology, this device provides voltage supervision and reset capabilities. 3. TPS3808: Texas Instruments offers this IC, which features adjustable reset thresholds and watchdog timer functionality.

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

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