ADM692SQ

Product Overview

Category: Integrated Circuits (ICs)

Use: Voltage Monitoring and Reset Circuits

Characteristics: - Monitors the power supply voltage of a system - Generates a reset signal when the voltage falls below a specified threshold - Ensures reliable operation of microprocessors, microcontrollers, and other digital systems

Package: SOP-8

Essence: The ADM692SQ is a voltage monitoring and reset circuit that provides a reliable way to monitor the power supply voltage of a system and generate a reset signal when the voltage falls below a specified threshold. It is commonly used in various electronic devices to ensure proper functioning and prevent data corruption or system malfunction.

Packaging/Quantity: The ADM692SQ is available in a SOP-8 package. Each package contains one unit of the IC.

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Threshold Voltage Options: 4.65V, 4.40V, 4.00V, 3.08V, 2.93V, 2.63V
• Reset Timeout Period: 140ms (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The ADM692SQ has eight pins arranged as follows:

```

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

1. VCC: Positive power supply input
2. GND: Ground reference
3. MR: Manual reset input (active-low)
4. RESET: Reset output
5. GND: Ground reference
6. VCC: Positive power supply input

Functional Features

• Voltage Monitoring: The ADM692SQ continuously monitors the power supply voltage and compares it with a predefined threshold.
• Reset Generation: When the voltage falls below the threshold, the ADM692SQ generates a reset signal to initiate a system reset.
• Manual Reset: The manual reset input (MR) allows for an external reset signal to override the internal monitoring circuitry.
• Reset Output: The reset output (RESET) provides a signal that can be used to reset microprocessors, microcontrollers, or other digital systems.

Advantages and Disadvantages

Advantages: - Reliable Power Supply Monitoring: Ensures proper operation of digital systems by monitoring the power supply voltage. - Reset Signal Generation: Generates a reset signal when the voltage falls below a specified threshold, preventing data corruption or system malfunction. - Manual Reset Capability: Allows for external control of the reset signal through the manual reset input (MR).

Disadvantages: - Limited Threshold Options: The ADM692SQ offers a limited number of threshold voltage options, which may not cover all voltage requirements in certain applications. - Single Reset Output: The IC provides a single reset output, limiting its use in systems requiring multiple reset signals.

Working Principles

The ADM692SQ operates by continuously monitoring the power supply voltage using an internal voltage comparator. When the voltage falls below the specified threshold, the comparator triggers the generation of a reset signal. This reset signal remains active until the voltage rises above the threshold or a manual reset signal is applied to the MR pin.

Detailed Application Field Plans

The ADM692SQ finds applications in various electronic devices where reliable power supply monitoring and reset functionality are crucial. Some common application areas include:

1. Microprocessor Systems: Used to ensure proper functioning and prevent data corruption in microprocessor-based systems.
2. Microcontroller Systems: Provides reliable reset functionality for microcontroller-based systems, ensuring stable operation.
3. Industrial Control Systems: Used in industrial control systems to monitor power supply voltage and initiate system resets when necessary.
4. Embedded Systems: Ensures the reliable operation of embedded systems by monitoring the power supply voltage and generating reset signals as required.

Detailed and Complete Alternative Models

1. ADM803: Voltage Monitoring and Reset Circuit with Adjustable Threshold
2. MAX809: Microprocessor Reset Circuits with Manual Reset Capability
3. TPS3808: Precision Voltage Supervisor and Reset Generator
4. LTC2910: Dual Supply Monitor and Reset Generator
5. MCP101: Voltage Supervisory Circuits with Manual Reset Input

These alternative models offer similar functionality to the ADM692SQ and can be considered as alternatives based on specific application requirements.

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