ADM8698AN

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High-performance voltage supervisor with watchdog timer
• Package: 8-pin plastic dual in-line package (PDIP)
• Essence: Voltage monitoring and system reset generation
• Packaging/Quantity: Tube packaging, 25 pieces per tube

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Watchdog Timer Timeout Period: Adjustable from 6.4ms to 1.6s
• Reset Threshold Voltage Options: 4.63V, 4.38V, 4.00V, or adjustable
• Power-On Reset Delay Time: 200ms typical
• Quiescent Current: 20µA typical

Detailed Pin Configuration

The ADM8698AN IC has the following pin configuration:

1. VCC: Supply voltage input
2. GND: Ground reference
3. MR: Manual reset input
4. RESET: Active-low system reset output
5. WDI: Watchdog timer input
6. CT: Capacitor connection for watchdog timeout period adjustment
7. TH: Threshold voltage selection pin
8. NC: No connection

Functional Features

• Monitors supply voltage and generates a system reset signal when the voltage falls below the threshold.
• Includes a watchdog timer that resets the system if a periodic input signal is not received within the specified timeout period.
• Provides a manual reset input for immediate system reset.
• Offers flexibility in selecting the threshold voltage and watchdog timeout period.

Advantages and Disadvantages

Advantages: - High-performance voltage supervision and watchdog functionality. - Wide supply voltage range allows compatibility with various systems. - Adjustable threshold voltage and watchdog timeout period provide customization options. - Low quiescent current minimizes power consumption.

Disadvantages: - Limited pin configuration options. - Manual reset input may require external circuitry for proper utilization in some applications.

Working Principles

The ADM8698AN monitors the supply voltage by comparing it with the selected threshold voltage. If the voltage falls below the threshold, the IC generates a system reset signal on the RESET pin. Additionally, the watchdog timer continuously monitors the WDI pin for a periodic input signal. If this signal is not received within the specified timeout period, the IC triggers a system reset. The MR pin allows for manual reset initiation.

Detailed Application Field Plans

The ADM8698AN finds applications in various fields, including:

1. Embedded Systems: Provides reliable power management and system reset functionality in microcontroller-based systems.
2. Industrial Automation: Ensures proper operation and fault detection in industrial control systems.
3. Automotive Electronics: Enhances safety and reliability by monitoring critical voltage levels in automotive electronic systems.
4. Medical Devices: Facilitates safe operation and system recovery in medical equipment.
5. Consumer Electronics: Enables efficient power management and system protection in devices such as smart home appliances and portable electronics.

Detailed and Complete Alternative Models

1. ADM8699AN: Similar to ADM8698AN but with additional features like adjustable reset timeout period and power-on reset delay.
2. ADM1060ARUZ: Programmable supervisor and sequencer with extensive monitoring and control capabilities.
3. MAX823LEUK+: Low-power voltage monitor with adjustable reset threshold and watchdog timer.
4. TPS3808G01DBVR: Ultra-low quiescent current voltage supervisor with programmable reset threshold and watchdog timer.

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