Overview
The ADM706AR, produced by Analog Devices Inc., is a microprocessor supervisory circuit designed to monitor and manage power supply conditions in various electronic systems. This component is part of the ADM706 series, which offers different reset threshold levels and output configurations. The ADM706AR specifically features a reset threshold of 4.40V and is suitable for monitoring 5V power supplies.
It is available in an 8-lead SOIC package and operates over an industrial temperature range of -40°C to +85°C. The device includes several key functions such as power-on reset, watchdog timer, and power-fail warning, making it a reliable choice for critical microprocessor supply monitoring.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| VCC Operating Voltage Range | 1.0 | 5.5 | V | ||
| Supply Current | 190 | 250 | µA | ||
| Reset Threshold | 4.25 | 4.40 | 4.50 | V | |
| Reset Threshold Hysteresis | 40 mV | ||||
| Reset Pulse Width | 160 | 200 | 280 | ms | |
| Watchdog Timeout Period | 1.00 | 1.60 | 2.25 | sec | |
| Operating Temperature Range | -40 | 85 | °C | ||
| Package Type | 8-lead SOIC |
Key Features
- Precision Supply-Voltage Monitor: Monitors the supply voltage and generates a reset if it falls below the specified threshold (4.40V for ADM706AR).
- Independent Watchdog Timer: Features a 1.6-second watchdog timer that activates if the watchdog input does not toggle within the specified time.
- Debounced Manual Reset Input (MR): Allows for a manual reset with an internally debounced input, compatible with TTL, CMOS logic, or a manual reset switch.
- Power-Fail Warning: Includes a 1.25V threshold detector for power-fail warning, low battery detection, or monitoring an additional power supply.
- Active Low Reset Output: Generates an active low reset output that remains operational with VCC as low as 1V.
- Low Quiescent Current: Operates with a quiescent current of 190-250 µA.
Applications
- Microprocessor Systems: Ideal for monitoring and managing power supply conditions in microprocessor-based systems.
- Computers and Controllers: Suitable for use in computer systems, controllers, and other critical applications requiring reliable power supply monitoring.
- Intelligent Instruments: Used in intelligent instruments and other devices that require precise power supply monitoring and reset capabilities.
- Automotive Systems: Can be used in automotive systems where reliable power supply monitoring is crucial.
Q & A
- What is the primary function of the ADM706AR?
The primary function of the ADM706AR is to monitor the supply voltage and generate a reset if it falls below the specified threshold, as well as to provide watchdog timer functionality and power-fail warnings.
- What is the reset threshold voltage for the ADM706AR?
The reset threshold voltage for the ADM706AR is 4.40V.
- What is the watchdog timeout period for the ADM706AR?
The watchdog timeout period for the ADM706AR is 1.6 seconds.
- What type of package is the ADM706AR available in?
The ADM706AR is available in an 8-lead SOIC package.
- What is the operating temperature range for the ADM706AR?
The operating temperature range for the ADM706AR is -40°C to +85°C.
- Does the ADM706AR have a manual reset input?
Yes, the ADM706AR features a debounced manual reset input (MR) that can be driven from TTL, CMOS logic, or a manual reset switch.
- What is the quiescent current of the ADM706AR?
The quiescent current of the ADM706AR is 190-250 µA.
- Can the ADM706AR monitor additional power supplies?
Yes, the ADM706AR includes a 1.25V threshold detector that can be used to monitor an additional power supply or for low battery detection.
- Is the reset output of the ADM706AR active high or active low?
The reset output of the ADM706AR is active low.
- How long does the reset pulse width last for the ADM706AR?
The reset pulse width for the ADM706AR is between 160 ms and 280 ms.
