ADM693ARZ

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Monitor and Reset Generator
• Characteristics: Low power consumption, wide operating voltage range, small package size
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Monitors the power supply voltage and generates a reset signal when the voltage falls below a certain threshold.
• Packaging/Quantity: Comes in a reel packaging with 2500 units per reel.

Specifications

• Supply Voltage Range: 1.2V to 5.5V
• Reset Threshold Voltage Options: 2.93V, 4.63V, or Adjustable
• Reset Timeout Period: 140ms (typical)
• Quiescent Current: 20µA (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The ADM693ARZ has eight pins arranged as follows:

```

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| | --| VCC |-- --| GND |-- --| MR |-- --| RESET |-- --| RESET |-- --| RESET |-- --| RESET |-- |_______| ```

• VCC: Power supply input pin
• GND: Ground reference pin
• MR: Manual reset input pin
• RESET: Reset output pin

Functional Features

• Monitors the power supply voltage continuously.
• Generates a reset signal when the voltage falls below the specified threshold.
• Provides a manual reset option through the MR pin.
• Offers multiple reset threshold voltage options for flexibility.
• Includes a built-in timeout period to prevent false resets.

Advantages and Disadvantages

Advantages: - Low power consumption makes it suitable for battery-powered applications. - Wide operating voltage range allows compatibility with various systems. - Small package size saves board space.

Disadvantages: - Limited reset threshold voltage options may not meet all application requirements. - Fixed timeout period may not be adjustable for specific needs.

Working Principles

The ADM693ARZ operates by continuously monitoring the power supply voltage. When the voltage falls below the specified threshold, it generates a reset signal to indicate a power failure or unstable condition. The reset signal remains active until the voltage rises above the threshold or a manual reset is triggered through the MR pin. The built-in timeout period ensures that the reset signal is not held indefinitely in case of a continuous low voltage condition.

Detailed Application Field Plans

The ADM693ARZ finds applications in various fields where reliable voltage monitoring and reset generation are crucial. Some potential application areas include:

1. Microcontroller Systems: Ensures proper system initialization and prevents erratic behavior during power fluctuations.
2. Industrial Control Systems: Provides reliable reset signals to ensure safe operation and prevent damage to equipment.
3. Automotive Electronics: Monitors the vehicle's power supply and generates resets when necessary to maintain system stability.
4. Medical Devices: Ensures proper functioning and safety of critical medical equipment by monitoring power supply integrity.
5. Consumer Electronics: Used in devices like smart home systems, IoT devices, and wearable technology to maintain stable operation.

Detailed and Complete Alternative Models

1. MAX809: Voltage monitor and reset generator with adjustable reset threshold and timeout period.
2. LTC2937: Precision voltage monitor and reset generator with programmable reset threshold and timeout period.
3. TPS3808: Ultra-low power voltage monitor and reset generator with fixed reset threshold and adjustable timeout period.
4. MCP101: Voltage supervisor with adjustable reset threshold and manual reset input.
5. CAT809: Voltage monitor and reset generator with fixed reset threshold and adjustable timeout period.

These alternative models offer similar functionality to the ADM693ARZ but may have different specifications and package options. It is recommended to review their datasheets for detailed information.

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