Overview
The ADM706AR-REEL7, 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 includes several variants with different reset threshold levels. The ADM706AR-REEL7 is specifically tailored for monitoring 3 V or 3.3 V power supplies, making it suitable for a wide range of applications, including embedded systems, industrial control systems, and consumer electronics.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Comments |
|---|---|---|---|---|---|
| Operating Voltage Range (VCC) | 2.70 | 5.5 | V | ||
| Supply Current | 100 | 200 | 350 | μA | VCC < 3.6 V, VCC < 5.5 V respectively |
| Reset Threshold (VRST) | 2.55 | 2.63 | 2.70 | V | For ADM706R |
| Reset Pulse Width | 160 | 200 | 280 | ms | VCC = 3 V or 3.3 V |
| Watchdog Timeout Period | 1.00 | 1.60 | 2.25 | sec | |
| Manual Reset Input (MR) Threshold | 0.6 | 2.0 | V | ||
| Power Fail Input (PFI) Threshold | 1.2 | 1.25 | 1.3 | V |
Key Features
- Precision Supply Voltage Monitoring: The ADM706AR-REEL7 monitors power supplies with specific reset thresholds (2.63 V for ADM706R).
- Low Quiescent Current: The device operates with a supply current as low as 100 μA.
- Independent Watchdog Timer: The watchdog timer activates if the watchdog input does not toggle within 1.6 seconds.
- Debounced Manual Reset Input (MR): The MR input is internally debounced and can be driven from TTL, CMOS logic, or a manual reset switch.
- Power Fail Warning: A 1.25 V threshold detector for power fail warning, low battery detection, or monitoring an additional power supply.
- Reset Output: The reset output remains operational with VCC as low as 1 V and can be active high or active low depending on the model.
Applications
- Embedded Systems: Ideal for monitoring power supplies in microcontroller-based systems.
- Industrial Control Systems: Used to ensure reliable operation in industrial automation and control systems.
- Consumer Electronics: Suitable for power supply monitoring in consumer electronic devices.
- Automotive Systems: Can be used in automotive electronics for robust power supply monitoring.
Q & A
- What is the primary function of the ADM706AR-REEL7?
The primary function is to monitor power supplies and generate a reset output during power-up, power-down, and brownout conditions.
- What are the different reset threshold levels available in the ADM706 series?
The reset threshold levels are 2.63 V (ADM706R), 2.93 V (ADM706S), and 3.08 V (ADM706T).
- What is the quiescent current of the ADM706AR-REEL7?
The quiescent current is as low as 100 μA.
- How does the watchdog timer function in the ADM706AR-REEL7?
The watchdog timer activates if the watchdog input does not toggle within 1.6 seconds.
- What is the purpose of the manual reset input (MR) in the ADM706AR-REEL7?
The MR input is used to generate a reset when taken below 0.6 V and is internally debounced.
- How does the power fail input (PFI) work in the ADM706AR-REEL7?
The PFI input triggers a power fail output when the input voltage falls below 1.25 V.
- What are the package options for the ADM706AR-REEL7?
The device is available in 8-lead PDIP and 8-lead SOIC packages.
- What is the operating temperature range for the ADM706AR-REEL7?
The operating temperature range is from -40°C to +85°C.
- Can the reset output of the ADM706AR-REEL7 be active high or active low?
Yes, the reset output can be either active high or active low depending on the model.
- How does the reset output remain operational at low VCC levels?
The reset output remains operational with VCC as low as 1 V.
