Overview
The ADM691AARWZ is a microprocessor supervisory circuit produced by Analog Devices Inc. This component is part of the ADM691A family and 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 reliable operation in various electronic systems.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Operating Voltage Range (VCC) | 4.75 | 5.5 | V | ||
| Threshold Voltage | 4.65 | V | ± 3% | ||
| Reset Delay Time | 200 ms | Adjustable | |||
| Watchdog Timeout | 100 ms | 1.6 s | Adjustable | ||
| Battery Backup Switching | Yes | ||||
| Chip Enable Signals | Yes | ||||
| Output Type | Open Drain, Push-Pull | ||||
| Package | SOIC-16 | ||||
| Minimum Operating Temperature | -40 | °C | |||
| Maximum Operating Temperature | 85 | °C | |||
| Power Dissipation (Pd) | 762 | mW | |||
| Operating Supply Current | 1.95 | mA |
Key Features
- Low Power Consumption: The ADM691AARWZ has a low standby current of approximately 1 μA, making it energy-efficient.
- Precision Voltage Monitor: It features a precision voltage monitor with a ±3% tolerance on the threshold voltage.
- Adjustable Reset and Watchdog Periods: The reset delay time and watchdog timeout are adjustable, providing flexibility in system design.
- Battery Backup Switching: Automatic battery backup switching for CMOS RAM, CMOS microprocessors, or other low-power logic.
- Chip Enable Signals: Fast onboard gating of chip enable signals is available.
- Power-Failure Warning: Includes a power-failure warning output and a low battery detection feature.
- 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 to ensure reliable power supply and system operation.
- Intelligent Instruments: Suitable for intelligent instruments that require precise power monitoring and control.
- Automotive Systems: Applied in automotive systems for critical power monitoring and battery backup functions.
Q & A
- What is the primary function of the ADM691AARWZ?
The primary function of the ADM691AARWZ is to provide power supply monitoring and battery control functions in microprocessor systems.
- What is the threshold voltage for the ADM691AARWZ?
The threshold voltage for the ADM691AARWZ is 4.65 V with a ±3% tolerance.
- Does the ADM691AARWZ support battery backup switching?
Yes, the ADM691AARWZ supports automatic battery backup switching for CMOS RAM and other low-power logic.
- What are the available package options for the ADM691AARWZ?
The ADM691AARWZ is available in 16-pin DIP, SO, and TSSOP packages.
- What is the operating temperature range for the ADM691AARWZ?
The operating temperature range for the ADM691AARWZ is from -40°C to +85°C.
- Does the ADM691AARWZ have a watchdog timer feature?
Yes, the ADM691AARWZ includes a watchdog timer with adjustable timeout periods.
- What is the maximum supply voltage for the ADM691AARWZ?
The maximum supply voltage for the ADM691AARWZ is 5.5 V.
- What is the typical operating supply current for the ADM691AARWZ?
The typical operating supply current for the ADM691AARWZ is 1.95 mA.
- Does the ADM691AARWZ support power-failure warning?
Yes, the ADM691AARWZ includes a power-failure warning output and low battery detection.
- What are some common applications of the ADM691AARWZ?
The ADM691AARWZ is commonly used in microprocessor systems, computers, controllers, intelligent instruments, and automotive systems.
