ADM8690ARN

Product Overview

• Category: Integrated Circuit
• Use: Power Supply Supervisor
• Characteristics: Monitors and controls power supply voltages
• Package: 8-Pin SOIC (Small Outline Integrated Circuit)
• Essence: Ensures stable operation of electronic devices by monitoring power supply voltages and providing reset signals when necessary.
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Reset Threshold Voltage: Adjustable from 1.8V to 4.6V
• Reset Timeout Period: Adjustable from 1ms to 640ms
• Active Low Reset Output
• Low Quiescent Current: 10µA typical
• Power-On Reset Delay: 100ms typical

Pin Configuration

The ADM8690ARN has the following pin configuration:

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

Functional Features

• Monitors power supply voltages and generates reset signals when voltage falls below a certain threshold.
• Adjustable reset threshold voltage and timeout period for flexibility in different applications.
• Provides a manual reset input for external control.
• Active low reset output ensures compatibility with various microcontrollers and digital systems.
• Low quiescent current consumption for power efficiency.

Advantages

• Reliable power supply supervision prevents system malfunction due to unstable voltages.
• Adjustable reset threshold and timeout allow customization for specific requirements.
• Manual reset input provides additional control flexibility.
• Active low reset output simplifies interfacing with microcontrollers and digital systems.
• Low quiescent current minimizes power consumption.

Disadvantages

• Limited to a maximum supply voltage of 5.5V.
• Requires external components for proper operation.
• Not suitable for applications requiring high precision voltage monitoring.

Working Principles

The ADM8690ARN operates by continuously monitoring the power supply voltage. When the voltage falls below the user-adjustable threshold, the device generates an active low reset signal. This signal can be used to reset microcontrollers or other digital systems, ensuring their stable operation. The reset timeout period determines how long the reset signal remains active after the voltage returns to normal.

Application Field Plans

The ADM8690ARN is commonly used in various electronic devices where reliable power supply supervision is critical. Some application fields include:

1. Embedded Systems: Ensuring stable operation of microcontrollers, DSPs, and FPGAs.
2. Industrial Control Systems: Preventing malfunctions in PLCs, motor drives, and sensors.
3. Communication Equipment: Monitoring power supplies in routers, switches, and modems.
4. Automotive Electronics: Providing voltage monitoring and reset functions in automotive control units.
5. Consumer Electronics: Enhancing reliability in smart home devices, gaming consoles, and audio systems.

Alternative Models

• ADM8691ARN: Similar functionality with adjustable reset threshold and timeout, but with additional features such as watchdog timer.
• ADM8692ARN: Dual power supply supervisor with independent reset outputs for two different voltage rails.
• ADM8693ARN: Triple power supply supervisor with individual reset outputs and adjustable thresholds for each rail.

(Note: The alternative models listed above are just examples and not an exhaustive list.)

This entry provides an overview of the ADM8690ARN, including its basic information, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models. The ADM8690ARN is a versatile power supply supervisor that ensures stable operation of electronic devices by monitoring power supply voltages and providing reset signals when necessary.