Overview
The ADM691AARWZ-REEL, produced by Analog Devices Inc., is a supervisory circuit designed to provide comprehensive power supply monitoring and battery control functions in microprocessor systems. This IC is part of the ADM691A/ADM693A/ADM800L/ADM800M family, offering a single-chip solution for various power management needs. It is available in a 16-pin SOIC package, making it suitable for a wide range of applications where space is a consideration.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Operating Voltage Range (VCC) | 4.75 | 5.5 | V | ||
| Reset Voltage Threshold (ADM691A, ADM800L) | 4.5 | 4.65 | 4.75 | V | |
| Reset Threshold Hysteresis | 15 | mV | |||
| VCC to RESET Delay | 80 | µs | |||
| Reset Timeout Period (Internal Oscillator) | 140 | 200 | 280 | ms | |
| Watchdog Timeout Period (Internal Oscillator, Long Period) | 1.0 | 1.6 | 2.25 | s | |
| Minimum WDI Input Pulse Width | 100 | ns | |||
| Standby Current | 1 | 15 | 100 | µA | |
| Package Type | SOIC-16 |
Key Features
- Low Power Consumption: The ADM691AARWZ-REEL features low power consumption, making it suitable for battery-powered systems.
- Precision Voltage Monitor: It offers a precision voltage monitor with ±2% tolerance.
- Reset Time Delay: The IC provides a reset time delay of 200 ms, or it can be adjusted.
- Automatic Battery Backup Power Switching: It includes automatic battery backup power switching for CMOS RAM and other low-power logic.
- Watchdog Timer: The IC includes a watchdog timer that generates a reset pulse if the timer is not toggled within a specified time.
- Power-Fail Warning: It provides a 1.25 V threshold detector for power-fail warning, low battery detection, or monitoring other power supplies.
- Fast Onboard Gating of Chip Enable Signals: The IC supports fast onboard gating of chip enable signals.
- Multiple Package Options: Available in 16-pin DIP, SO, and TSSOP packages.
Applications
- Microprocessor Systems: Ideal for monitoring and controlling power supplies in microprocessor-based systems.
- Computers and Controllers: Used in various computer and controller applications where reliable power monitoring is crucial.
- Intelligent Instruments: Suitable for intelligent instruments that require precise power management.
- Automotive Systems: Applied in automotive systems for reliable power supply monitoring and battery backup functions.
- Critical Power Monitoring: Used in applications requiring critical power monitoring and backup functions.
Q & A
- What is the primary function of the ADM691AARWZ-REEL?
The primary function is to provide power supply monitoring and battery control functions in microprocessor systems.
- What is the operating voltage range of the ADM691AARWZ-REEL?
The operating voltage range is from 4.75 V to 5.5 V.
- What is the reset voltage threshold for the ADM691AARWZ-REEL?
The reset voltage threshold is between 4.5 V and 4.75 V.
- Does the ADM691AARWZ-REEL have a watchdog timer?
Yes, it includes a watchdog timer that generates a reset pulse if not toggled within a specified time.
- What package types are available for the ADM691AARWZ-REEL?
It is available in 16-pin SOIC, DIP, and TSSOP packages.
- What is the standby current of the ADM691AARWZ-REEL?
The standby current ranges from 1 µA to 100 µA.
- Does the ADM691AARWZ-REEL support automatic battery backup power switching?
Yes, it supports automatic battery backup power switching for CMOS RAM and other low-power logic.
- What is the minimum WDI input pulse width for the ADM691AARWZ-REEL?
The minimum WDI input pulse width is 100 ns.
- In which applications is the ADM691AARWZ-REEL commonly used?
It is commonly used in microprocessor systems, computers, controllers, intelligent instruments, and automotive systems.
- What is the reset timeout period for the internal oscillator of the ADM691AARWZ-REEL?
The reset timeout period for the internal oscillator is between 140 ms and 280 ms.
