Overview
The ADM691ANZ is a microprocessor supervisory circuit produced by Analog Devices Inc. This IC is designed to provide comprehensive power supply monitoring and battery control functions in microprocessor systems. It offers features such as power-on reset, battery backup switching, watchdog timer, and power failure warning, making it an essential component for ensuring the reliability and stability of microprocessor-based systems.
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| Part Number | ADM691ANZ | - | - |
| Manufacturer | Analog Devices Inc. | - | - |
| Description | Supervisor, Active-High, Active-Low Reset, 0V-5.5V, DIP-16 | - | - |
| Lifecycle Status | PRODUCTION | - | Last Updated: 1 month ago |
| Factory Lead Time | 8 Weeks | - | - |
| Mount | Through Hole | - | - |
| Supply Voltage | 4.75V to 5.5V | V | - |
| Operating Supply Current | 1.95mA | mA | - |
| Reset | Active High/Active Low | - | - |
| Reset Timeout | 35ms Minimum | ms | - |
| Voltage - Threshold | 4.65V | V | - |
| Watchdog Timer | 100 ms, 1.6 s, or Adjustable | - | - |
| Operating Temperature | -40°C to +85°C | °C | - |
| Package / Case | 16-DIP | - | - |
| Pin Count | 16 | - | - |
Key Features
- Power-on Reset: Provides a reset output during power-up, power-down, and brownout conditions, remaining operational with VCC as low as 1 V.
- Battery Backup Switching: Automatically switches to battery backup for CMOS RAM, CMOS microprocessors, or other low-power logic when the main power supply fails.
- Watchdog Timer: Generates a reset pulse if the watchdog timer has not been toggled within a specified time, with adjustable timeout periods.
- Low Power Consumption: Operates with low power consumption, typically 1.95 mA, and a standby current of 600 nA.
- Precision Voltage Monitoring: Monitors the supply voltage with a precision of ±2% to ±3% tolerance on the reset threshold voltage.
- Fast Gating of Chip Enable Signals: Provides extremely fast gating of chip enable signals, typically within 5 ns.
- Power Failure Warning: Includes a power failure warning feature, such as a 1.25 V threshold detector for monitoring other power supplies.
Applications
- Microprocessor Systems: Ideal for use in microprocessor-based systems to ensure reliable power supply monitoring and reset functions.
- Computers and Controllers: Suitable for use in computer systems, industrial controllers, and other embedded systems requiring robust power management.
- Automotive Systems: Used in automotive applications where reliable power supply monitoring is critical.
- Intelligent Instruments: Applicable in intelligent instruments and other devices that require precise voltage monitoring and reset capabilities.
Q & A
- What is the primary function of the ADM691ANZ?
The primary function of the ADM691ANZ is to provide power supply monitoring and battery control functions in microprocessor systems, including power-on reset, battery backup switching, and watchdog timer capabilities.
- What is the operating voltage range of the ADM691ANZ?
The operating voltage range of the ADM691ANZ is from 4.75V to 5.5V.
- What type of reset does the ADM691ANZ support?
The ADM691ANZ supports both active high and active low reset outputs.
- What is the watchdog timer functionality of the ADM691ANZ?
The watchdog timer generates a reset pulse if it has not been toggled within a specified time, with adjustable timeout periods of 100 ms, 1.6 s, or custom settings.
- How does the battery backup switching work in the ADM691ANZ?
The ADM691ANZ automatically switches to battery backup when the main power supply (VCC) falls below a certain threshold, ensuring continuous operation of CMOS RAM or other low-power logic.
- What is the typical operating current of the ADM691ANZ?
The typical operating current of the ADM691ANZ is 1.95 mA, with a standby current of 600 nA.
- What is the precision of the voltage monitoring in the ADM691ANZ?
The voltage monitoring in the ADM691ANZ has a precision of ±2% to ±3% tolerance on the reset threshold voltage.
- What are the common applications of the ADM691ANZ?
The ADM691ANZ is commonly used in microprocessor systems, computers, controllers, automotive systems, and intelligent instruments.
- What package types are available for the ADM691ANZ?
The ADM691ANZ is available in 16-pin DIP and SO packages.
- What is the operating temperature range of the ADM691ANZ?
The operating temperature range of the ADM691ANZ is from -40°C to +85°C.
