Overview
The ADM706ARZ from Analog Devices Inc. is a microprocessor supervisory circuit designed to monitor 5 V power supplies and microprocessor activity. This device generates a reset output during power-up, power-down, and brownout conditions, ensuring reliable operation of microprocessor systems. It features a 1.25 V threshold detector to warn of power failures and low battery conditions, as well as an active low and debounced manual reset input (MR). The ADM706ARZ is suitable for a wide range of applications, including microprocessor systems, computers, controllers, and intelligent instruments.
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 | ADM706/ADM708 |
| Reset Threshold Hysteresis | 40 | mV | |||
| Reset Pulse Width | 160 | 200 | 280 | ms | |
| RESET Output Voltage | V | VCC - 1.5 V, ISOURCE = 800 µA, ISINK = 3.2 mA | |||
| Operating Temperature Range | -40 | 85 | °C | ||
| Package Style | 8-lead SOIC (R-8) |
Key Features
- Power-supply monitoring circuitry that generates a reset output during power-up, power-down, and brownout conditions.
- 1.25 V threshold detector to warn of power failures and detect low battery conditions.
- Active low and debounced manual reset input (MR).
- Independent watchdog timer with a 1.60 sec timeout (not available in ADM707/ADM708 models).
- Guaranteed RESET valid with VCC as low as 1 V.
- Quiescent current of 190 µA.
- Operating voltage range from 1.0 V to 5.5 V.
- Reset pulse width of 200 ms.
- Voltage monitor for power fail or low battery warning.
- Precision supply voltage monitor set at 4.40 V.
Applications
- Microprocessor systems.
- Computers.
- Controllers.
- Intelligent instruments.
- Critical microprocessor supply monitoring.
- Automotive systems.
Q & A
- What is the primary function of the ADM706ARZ?
The primary function of the ADM706ARZ is to monitor the 5 V power supply and generate a reset output during power-up, power-down, and brownout conditions to ensure reliable operation of microprocessor systems.
- What is the operating voltage range of the ADM706ARZ?
The operating voltage range of the ADM706ARZ is from 1.0 V to 5.5 V.
- What is the reset threshold voltage for the ADM706ARZ?
The reset threshold voltage for the ADM706ARZ is set at 4.40 V.
- Does the ADM706ARZ have a watchdog timer?
No, the ADM706ARZ does not have a watchdog timer. This feature is available in the ADM705 and ADM706 models but not in the ADM707 and ADM708 models.
- What is the reset pulse width of the ADM706ARZ?
The reset pulse width of the ADM706ARZ is typically 200 ms, ranging from 160 ms to 280 ms.
- What type of package is the ADM706ARZ available in?
The ADM706ARZ is available in an 8-lead SOIC (R-8) package.
- What is the operating temperature range of the ADM706ARZ?
The operating temperature range of the ADM706ARZ is from -40°C to +85°C.
- Does the ADM706ARZ have a manual reset input?
Yes, the ADM706ARZ has an active low and debounced manual reset input (MR).
- What is the quiescent current of the ADM706ARZ?
The quiescent current of the ADM706ARZ is 190 µA.
- Can the ADM706ARZ monitor additional power supplies?
Yes, the ADM706ARZ includes a 1.25 V threshold detector to monitor additional power supplies or warn of power failures and low battery conditions.
