ADM691ARZ

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Monitor and Reset Generator
• Characteristics: Low-power, precision voltage monitoring and reset generation
• Package: SOIC-8
• Essence: Provides a reliable way to monitor the power supply voltage of a system and generate a reset signal when the voltage falls below a certain threshold.
• Packaging/Quantity: Comes in a tube packaging with 50 units per tube.

Specifications

• Supply Voltage Range: 1.2V to 5.5V
• Threshold Voltage Options: 4.63V, 4.38V, 4.00V, 3.08V, 2.93V, 2.63V, 2.32V, 2.06V
• Reset Timeout Period: 140ms (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The ADM691ARZ has the following pin configuration:

1. VCC: Power Supply Input
2. GND: Ground
3. MR: Manual Reset Input
4. RESET: Reset Output
5. RESET: Reset Output
6. GND: Ground
7. VCC: Power Supply Input
8. VCC: Power Supply Input

Functional Features

• Monitors the power supply voltage continuously.
• Generates a reset signal when the voltage falls below the set threshold.
• Provides a manual reset input for immediate system reset.
• Offers a debounced reset output signal.
• Low-power consumption.

Advantages and Disadvantages

Advantages: - Precise voltage monitoring. - Wide supply voltage range. - Multiple threshold voltage options. - Debounced reset output. - Low-power operation.

Disadvantages: - Limited number of threshold voltage options. - Single manual reset input.

Working Principles

The ADM691ARZ operates by continuously monitoring the power supply voltage using an internal voltage reference and comparator. When the voltage falls below the set threshold, the reset output is activated, indicating a low-voltage condition. The reset signal remains active until the voltage rises above the threshold or a manual reset input is triggered.

Detailed Application Field Plans

The ADM691ARZ is commonly used in various applications where reliable voltage monitoring and reset generation are critical. Some of the typical application fields include:

1. Microcontrollers and Microprocessors: Ensures proper system initialization and prevents erratic behavior during power-up or voltage fluctuations.
2. Embedded Systems: Provides a reliable way to reset the system in case of power supply issues or software errors.
3. Industrial Control Systems: Monitors the power supply voltage to prevent damage to sensitive components and ensure safe operation.
4. Automotive Electronics: Protects electronic systems from voltage drops and ensures proper functioning during vehicle start-up and operation.
5. Battery-Powered Devices: Guards against excessive battery discharge and provides a reset mechanism when the battery voltage reaches a critical level.

Detailed and Complete Alternative Models

• ADM708ARZ: Voltage Monitor with Watchdog Timer
• MAX809: Microprocessor Reset Circuits
• MCP101: Voltage Supervisor with Manual Reset Input
• TPS3808: Precision Voltage Supervisor with Programmable Delay
• LTC2910: Dual Supply Monitor with Adjustable Reset Timeout

(Note: This list is not exhaustive and there may be other alternative models available in the market.)

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