Overview
The ADM708ARM is a microprocessor supervisory circuit manufactured by Analog Devices Inc. This component is designed to monitor the power supply voltage and provide a reset signal to the microprocessor if the voltage falls below a specified threshold. It is particularly useful in ensuring the stable operation of microprocessors during power-up and power-down sequences.
Key Specifications
| Parameter | Value | Description |
|---|---|---|
| Part Number | ADM708ARM | Manufacturer part number |
| Manufacturer | Analog Devices Inc. | Company producing the component |
| Package/Case | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | Physical package of the component |
| Operating Temperature | -40°C ~ 85°C (TA) | Temperature range for operation |
| Reset Threshold | 4.4V | Voltage threshold for generating a reset signal |
| Reset Timeout | 200 ms | Duration for which the reset signal is held low after voltage recovery |
| Reset Output | Active High/Active Low | Type of reset output signals provided |
| Quiescent Current | 100 µA | Current consumption of the device in standby mode |
| Lead Free Status / RoHS Status | Contains lead / RoHS non-compliant | Compliance with lead-free and RoHS regulations |
Key Features
- Precision Supply Voltage Monitoring: The ADM708ARM monitors the supply voltage and generates a reset signal if the voltage falls below the specified threshold of 4.4V.
- Dual Reset Outputs: Provides both active high and active low reset outputs, offering flexibility in system design.
- Debounced Manual Reset Input: The manual reset input (MR) is internally debounced, allowing it to be driven from TTL, CMOS logic, or a manual reset switch.
- Power-Fail Input and Output: Includes a power-fail input (PFI) and output (PFO) for monitoring and signaling low power conditions.
- Low Quiescent Current: Consumes a low quiescent current of 100 µA, making it energy-efficient.
Applications
- Microprocessor Systems: Used to ensure stable operation of microprocessors during power-up and power-down sequences by providing a reset signal when the supply voltage is below the threshold.
- Embedded Systems: Suitable for use in embedded systems that require reliable power monitoring and reset functionality.
- Industrial Control Systems: Can be used in industrial control systems to monitor power supply conditions and ensure system stability.
- Automotive Systems: Applicable in automotive systems where robust power monitoring is crucial.
Q & A
- What is the primary function of the ADM708ARM?
The primary function of the ADM708ARM is to monitor the supply voltage and generate a reset signal if the voltage falls below a specified threshold, ensuring stable operation of microprocessors.
- What are the package options for the ADM708ARM?
The ADM708ARM is available in 8-TSSOP and 8-MSOP packages.
- What is the reset threshold voltage for the ADM708ARM?
The reset threshold voltage for the ADM708ARM is 4.4V.
- Does the ADM708ARM have a watchdog timer function?
No, the ADM708ARM does not have a watchdog timer function. Instead, it provides an active high reset output in addition to the active low output.
- What is the quiescent current of the ADM708ARM?
The quiescent current of the ADM708ARM is 100 µA.
- Is the ADM708ARM RoHS compliant?
No, the ADM708ARM contains lead and is not RoHS compliant.
- What is the operating temperature range for the ADM708ARM?
The operating temperature range for the ADM708ARM is -40°C to 85°C.
- How long does the reset signal stay active after the voltage recovers?
The reset signal stays active for 200 ms after the voltage recovers above the threshold.
- Can the manual reset input be driven from TTL or CMOS logic?
- What is the purpose of the power-fail input and output?
The power-fail input (PFI) and output (PFO) are used to monitor and signal low power conditions in the system.
- What is the purpose of the power-fail input and output?
