Overview
The ADM811SART-REEL, produced by Analog Devices Inc., is a reliable voltage monitoring device designed for various voltage monitoring applications. This component is part of the ADM811/ADM812 series, which are supervisory circuits intended to monitor and manage power supply voltages in electronic systems. The ADM811 provides an active low reset output, while the ADM812 offers an active high reset output. These devices ensure that microprocessors and other critical components are properly reset during power-up, brownouts, or other voltage anomalies, thereby maintaining system stability and preventing spurious activity.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | SOT-143 (4-pin) |
| Supply Voltage Range | −0.3 V to +6 V |
| Operating Temperature Range | −40°C to +85°C |
| Storage Temperature Range | −65°C to +160°C |
| Reset Output Type | Active Low (ADM811) |
| Reset Timeout | 240 ms (typical) |
| Manual Reset Input | Debounced manual reset |
| Power Dissipation (TA = 70°C) | 200 mW (derate by 4 mW/°C above 70°C) |
| Thermal Impedance (θJA) | 330°C/W |
| ESD Rating | 3 kV |
Key Features
- Voltage Monitoring: Monitors six different voltages with 5% or 10% degradation tolerance before triggering a reset.
- Reset Output: Provides an active low reset output (ADM811) or active high reset output (ADM812).
- Manual Reset: Includes a debounced manual reset input to handle noisy environments and switch bouncing.
- Power-Up and Brownout Protection: Ensures microprocessor stability during power-up and brownout conditions.
- Compact Package: Available in a small SOT-143 package, making it suitable for space-constrained designs.
Applications
- Microprocessor Systems: Ideal for ensuring proper reset and power management in microprocessor-based systems.
- Controllers and Intelligent Instruments: Used in various control systems and intelligent instruments to maintain voltage stability.
- Automotive Systems: Suitable for automotive applications due to its robust temperature range and reliability.
- Safety Systems: Employed in safety-critical systems where reliable voltage monitoring is essential.
- Portable Instruments: Used in portable electronic devices to ensure stable operation under varying power conditions.
Q & A
- What is the primary function of the ADM811SART-REEL? The primary function is to monitor supply voltages and generate a reset signal to ensure microprocessor stability.
- What types of reset outputs are available? The ADM811 provides an active low reset output, while the ADM812 provides an active high reset output.
- How does the manual reset input work? The manual reset input is debounced to handle switch bouncing and noise in the environment.
- What is the typical reset timeout period? The typical reset timeout period is 240 ms.
- What is the operating temperature range of the ADM811SART-REEL? The operating temperature range is −40°C to +85°C.
- What package type is the ADM811SART-REEL available in? It is available in a 4-pin SOT-143 package.
- How does the device handle power-up and brownout conditions? It ensures microprocessor stability during power-up and brownout conditions by generating a reset signal.
- Is the ADM811SART-REEL suitable for automotive applications? Yes, it is suitable due to its robust temperature range and reliability.
- What is the ESD rating of the ADM811SART-REEL? The ESD rating is 3 kV.
- What is the power dissipation limit for the ADM811SART-REEL at 70°C? The power dissipation limit is 200 mW, derating by 4 mW/°C above 70°C.
