ADM694ANZ

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Monitoring and Resetting
• Characteristics: Low-power, Precision, Adjustable Threshold
• Package: 8-pin PDIP (Plastic Dual In-line Package)
• Essence: Monitors voltage levels and provides a reset signal when the voltage falls below a certain threshold.
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 1.2V to 5.5V
• Threshold Voltage Options: Adjustable from 1.6V to 4.6V in 100mV steps
• Reset Timeout Period: Fixed at 140ms
• Operating Temperature Range: -40°C to +85°C
• Quiescent Current: 10µA (typical)

Detailed Pin Configuration

The ADM694ANZ IC has the following pin configuration:

1. VCC: Supply Voltage Input
2. GND: Ground
3. MR: Manual Reset Input
4. RESET: Active-Low Reset Output
5. TH: Threshold Voltage Selection Input
6. CT: Capacitor Connection for Reset Timeout
7. NC: No Connection
8. VCC: Supply Voltage Input

Functional Features

• Monitors the supply voltage and generates a reset signal when it falls below the programmed threshold.
• Provides an active-low reset output that remains low until the supply voltage rises above the threshold and the reset timeout period elapses.
• Offers an adjustable threshold voltage to suit different applications.
• Includes a manual reset input for immediate system reset.
• Low quiescent current consumption makes it suitable for battery-powered devices.

Advantages

• Precise voltage monitoring ensures reliable system operation.
• Adjustable threshold voltage allows customization for specific requirements.
• Low-power design extends battery life in portable applications.
• Manual reset input provides flexibility for system testing and debugging.
• Compact 8-pin PDIP package offers ease of integration.

Disadvantages

• Fixed reset timeout period may not be suitable for all applications.
• Limited threshold voltage options may restrict compatibility with certain systems.
• Lack of alternative package options may limit its use in space-constrained designs.

Working Principles

The ADM694ANZ operates by continuously monitoring the supply voltage using an internal voltage comparator. When the voltage falls below the programmed threshold, the reset output is activated, indicating a low-voltage condition. The reset output remains low until the supply voltage rises above the threshold and the fixed reset timeout period elapses. The manual reset input allows immediate system reset, overriding the voltage monitoring function.

Detailed Application Field Plans

The ADM694ANZ is commonly used in various electronic systems where reliable voltage monitoring and resetting are critical. Some application fields include:

1. Microcontroller-based Systems: Ensures proper operation by monitoring the power supply voltage and initiating a reset when necessary.
2. Industrial Control Systems: Provides fault detection and system recovery capabilities in industrial automation applications.
3. Automotive Electronics: Monitors battery voltage to prevent undervoltage conditions and ensure safe operation of vehicle electronics.
4. Medical Devices: Ensures patient safety by monitoring power supply integrity in medical equipment.
5. Consumer Electronics: Protects sensitive components from voltage fluctuations and initiates system resets if required.

Detailed and Complete Alternative Models

1. ADM708ARZ: Similar functionality with adjustable threshold voltage and different package (SOT-23).
2. MAX809: Voltage monitoring and reset IC series with various threshold voltage options and package choices.
3. MCP101: Precision voltage monitor with adjustable threshold voltage and low quiescent current consumption.

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

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