Overview
The ADM706PARZ-REEL, produced by Analog Devices Inc., is a highly reliable microprocessor supervisory circuit designed to monitor power supplies and batteries. This component is part of the ADM706 series, which provides comprehensive power-supply monitoring and reset functionality. It is suitable for monitoring 3 V or 3.3 V power supplies and is particularly useful in systems that require robust power management and reset capabilities 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 | 2.63 | 2.63 | V | For ADM706P and ADM706R | |
| Reset Pulse Width | 160 | 200 | 280 | ms | |
| Watchdog Timeout Period | 1.00 | 1.60 | 2.25 | sec | |
| MR Input Threshold | 0.6 | 0.8 | V | ||
| MR to Reset Output Delay | 250 | ns | |||
| PFI Input Threshold | 1.2 | 1.25 | 1.3 | V | |
| Operating Temperature Range | -40°C | +85°C | Industrial Version |
Key Features
- Precision supply voltage monitoring with reset thresholds of 2.63 V, 2.93 V, and 3.08 V for different models.
- Low quiescent current of 100 μA.
- 200 ms reset pulse width.
- Debounced manual reset input (MR) that can be driven from TTL, CMOS logic, or a manual reset switch.
- Independent watchdog timer with a 1.6 sec timeout.
- Active high or active low reset output, depending on the model.
- 1.25 V threshold detector for power fail warning, low battery detection, or monitoring an additional power supply.
- Available in 8-lead PDIP and 8-lead SOIC packages.
Applications
- Monitoring 3 V or 3.3 V power supplies in microprocessor-based systems.
- Power fail or low battery warning circuits.
- Monitoring additional power supplies in complex systems.
- Embedded systems requiring robust power management and reset capabilities.
- Industrial and consumer electronics where reliable power monitoring is crucial.
Q & A
- What is the primary function of the ADM706PARZ-REEL?
The primary function is to monitor power supplies and generate a reset output during power-up, power-down, and brownout conditions.
- What are the available reset thresholds for the ADM706 series?
The reset thresholds are 2.63 V, 2.93 V, and 3.08 V, depending on the specific model.
- What is the quiescent current of the ADM706PARZ-REEL?
The quiescent current is 100 μA.
- What is the reset pulse width of the ADM706PARZ-REEL?
The reset pulse width is 200 ms.
- Does the ADM706PARZ-REEL have a watchdog timer?
Yes, it has an independent watchdog timer with a 1.6 sec timeout.
- What types of reset outputs are available for the ADM706 series?
The ADM706 series offers both active high and active low reset outputs, depending on the model.
- What is the purpose of the PFI input?
The PFI (Power Fail Input) is used to detect power failures, low battery conditions, or to monitor an additional power supply.
- In what packages is the ADM706PARZ-REEL available?
It is available in 8-lead PDIP and 8-lead SOIC packages.
- What is the operating temperature range for the ADM706PARZ-REEL?
The operating temperature range is -40°C to +85°C for the industrial version.
- Can the manual reset input be driven from different logic types?
Yes, the manual reset input (MR) can be driven from TTL, CMOS logic, or a manual reset switch.
