Overview
The ADM708TARZ-REEL is a microprocessor supervisory circuit manufactured by Analog Devices Inc. This component is designed to monitor and manage power supply conditions, ensuring reliable operation of microprocessors and other digital systems. It is particularly useful in applications requiring robust power supply monitoring, including reset generation during power-up, power-down, and brownout conditions.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| VCC Operating Voltage Range | 1.0 | - | 5.5 | V | - |
| Supply Current | 190 | 250 | - | µA | VCC = 4.75 V to 5.5 V, TA = TMIN to TMAX |
| Reset Threshold (ADM706/ADM708) | 4.25 | 4.40 | 4.50 | V | - |
| Reset Threshold Hysteresis | 40 | - | - | mV | - |
| Reset Pulse Width | 160 | 200 | 280 | ms | - |
| Watchdog Timeout Period (tWD) | 1.00 | 1.60 | 2.25 | sec | - |
| Package Type | - | - | - | 8-SOIC | - |
| Operating Temperature Range | -40 | - | 85 | °C | Industrial (Version A) |
Key Features
- Power Supply Monitoring: The ADM708TARZ-REEL monitors the power supply and generates a reset output during power-up, power-down, and brownout conditions.
- Watchdog Timer: An independent watchdog monitoring circuit is included, which activates if the watchdog input does not toggle within 1.6 seconds.
- Manual Reset Input: An active low debounced manual reset (MR) input is provided.
- Power Fail Input: A 1.25 V threshold detector for power fail warning, low battery detection, or to monitor an additional power supply.
- Reset Output: Both active high and active low reset outputs are available, and the reset output remains operational with VCC as low as 1 V.
- Package Options: Available in narrow 8-lead PDIP and 8-lead SOIC packages.
Applications
- Microprocessor Systems: Ideal for monitoring and managing power supply conditions in microprocessor-based systems.
- Embedded Systems: Suitable for use in embedded systems that require robust power supply monitoring and reset generation.
- Industrial Control Systems: Used in industrial control systems to ensure reliable operation under various power conditions.
- Automotive Systems: Can be used in automotive systems where power supply stability is critical.
Q & A
- What is the primary function of the ADM708TARZ-REEL?
The primary function is to monitor the power supply and generate a reset output during power-up, power-down, and brownout conditions.
- What types of packages are available for the ADM708TARZ-REEL?
It is available in narrow 8-lead PDIP and 8-lead SOIC packages.
- What is the watchdog timeout period for the ADM708TARZ-REEL?
The watchdog timeout period is between 1.00 and 2.25 seconds.
- What is the operating voltage range for the ADM708TARZ-REEL?
The operating voltage range is from 1.0 V to 5.5 V.
- Does the ADM708TARZ-REEL have a manual reset input?
Yes, it has an active low debounced manual reset (MR) input.
- What is the power fail input threshold for the ADM708TARZ-REEL?
The power fail input threshold is between 1.2 V and 1.3 V.
- Is the ADM708TARZ-REEL RoHS compliant?
Yes, the ADM708TARZ-REEL is RoHS compliant.
- What is the operating temperature range for the ADM708TARZ-REEL?
The operating temperature range is from -40°C to +85°C for the industrial version.
- Can the reset output of the ADM708TARZ-REEL operate at low VCC levels?
Yes, the reset output remains operational with VCC as low as 1 V.
- What is the typical supply current for the ADM708TARZ-REEL?
The typical supply current is 250 µA.
