Overview
The ADM693AARWZ is a part of the ADM691A/ADM693A/ADM800L/ADM800M family of supervisory circuits produced by Analog Devices Inc. These circuits are designed to provide comprehensive power supply monitoring and battery control functions in microprocessor systems. The ADM693AARWZ specifically offers features such as precision voltage monitoring, watchdog timer, and automatic battery backup power switching, making it an essential component for ensuring the reliability and stability of microprocessor-based systems.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Operating Voltage Range (VCC) | 4.5 | - | 5.5 | V | - |
| Reset Voltage Threshold | 4.25 | 4.40 | 4.50 | V | - |
| Reset Timeout Period (Internal Oscillator) | 140 | 200 | 280 | ms | - |
| Watchdog Timeout Period (Internal Oscillator) | 1.0 | 1.6 | 2.25 | s | Long Period |
| Watchdog Timeout Period (Internal Oscillator) | 70 | 100 | 140 | ms | Short Period |
| Battery Backup Switching Output Voltage | VCC - 0.05 | VCC - 0.02 | VCC - 0.3 | V | IOUT = 25 mA |
| Output Resistance (VCC to VOUT) | 0.8 | 1.2 | - | Ω | VCC = 4.5 V |
Key Features
- Precision Voltage Monitoring: The ADM693AARWZ features precision voltage monitoring with a tolerance of ±3% on the reset threshold voltage.
- Watchdog Timer: Includes a watchdog timer with adjustable timeout periods, ensuring system reliability.
- Automatic Battery Backup Power Switching: Automatically switches to battery backup when the main power supply fails.
- Low Power Consumption: Operates with low power consumption, including a standby current of 1 µA.
- Fast Onboard Gating of Chip Enable Signals: Provides fast onboard gating of chip enable signals, enhancing system performance.
- Multiple Package Options: Available in various package options, including TSSOP.
Applications
- Microprocessor Systems: Ideal for monitoring and controlling power supplies in microprocessor-based systems.
- Computers and Controllers: Used in computer systems and controllers to ensure reliable power supply and battery backup.
- 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 management.
- Critical Power Monitoring: Essential in applications requiring critical power monitoring, such as medical devices and industrial control systems.
Q & A
- What is the primary function of the ADM693AARWZ?
The primary function of the ADM693AARWZ is to provide power supply monitoring and battery control functions in microprocessor systems.
- What is the operating voltage range of the ADM693AARWZ?
The operating voltage range of the ADM693AARWZ is from 4.5 V to 5.5 V.
- What is the reset voltage threshold for the ADM693AARWZ?
The reset voltage threshold for the ADM693AARWZ is between 4.25 V and 4.50 V.
- Does the ADM693AARWZ support automatic battery backup power switching?
Yes, the ADM693AARWZ supports automatic battery backup power switching.
- What are the typical applications of the ADM693AARWZ?
The ADM693AARWZ is typically used in microprocessor systems, computers, controllers, intelligent instruments, and automotive systems.
- What is the standby current of the ADM693AARWZ?
The standby current of the ADM693AARWZ is 1 µA.
- Can the watchdog timeout period be adjusted?
Yes, the watchdog timeout period can be adjusted using an internal oscillator or an external clock.
- What package options are available for the ADM693AARWZ?
The ADM693AARWZ is available in various package options, including TSSOP.
- What is the output resistance of the ADM693AARWZ in battery backup mode?
The output resistance of the ADM693AARWZ in battery backup mode is between 0.8 Ω and 1.2 Ω.
- Does the ADM693AARWZ have a power-down reset delay?
Yes, the ADM693AARWZ has a power-down reset delay of 800 ns.
