Overview
The ADM709MARZ-REEL, produced by Analog Devices Inc., is a power supply monitor with reset functionality designed to supervise system voltages and ensure proper system reset during power-up, power-down, and brownout conditions. This integrated circuit is particularly useful in microprocessor systems, computers, controllers, and other critical applications where reliable voltage monitoring is essential.
Key Specifications
| Parameter | Min | Typ | Max | Units | Test Conditions/Comments |
|---|---|---|---|---|---|
| VCC Operating Voltage Range | 1.0 | 5.5 | V | TA = 0°C to +70°C | |
| 1.2 | 5.5 | V | TA = –40°C to +85°C | ||
| Supply Current | 35 | 85 | 110 | µA | VCC < 3.6 V, TA = 0°C to +70°C |
| 35 | 110 | 200 | µA | VCC < 3.6 V, TA = –40°C to +85°C | |
| 65 | 150 | 200 | µA | VCC < 5.5 V, TA = 0°C to +70°C | |
| 65 | 200 | µA | VCC < 5.5 V, TA = –40°C to +85°C | ||
| Reset Threshold | 4.25 | 4.40 | 4.50 | V | ADM709M |
| VCC to RESET Delay | 20 | µs | VCC = Reset Threshold max–min | ||
| RESET Active Time-Out Period | 140 | 280 | 380 | ms | VCC = Reset Threshold max, VCC Rising |
| RESET Output Voltage | 0.3 | V | ISINK = 1.2 mA. VCC = Reset Threshold min | ||
| Operating Temperature Range | –40 | 85 | °C | ||
| Package | 8-Pin SOIC (SO-8) |
Key Features
- Precision Supply Voltage Monitor: Available with different threshold levels for +5 V, +3.3 V, and +3 V supply monitoring.
- Low Power Consumption: Quiescent current as low as 35 µA, ensuring energy efficiency.
- Power-On Reset Generator: Ensures proper system reset during power-up, holding the RESET output low for 140 ms after VCC rises above the threshold.
- Fast Response Time: Quick response to out-of-tolerance voltage conditions.
- Push-Pull, Totem Pole Output: Capable of driving loads effectively.
- Compact Package: Available in an 8-pin SOIC package, suitable for space-constrained applications.
- Wide Operating Temperature Range: Operates from –40°C to +85°C, making it versatile for diverse environments.
- Built-in Fault Protection: Enhances system reliability with robust construction and comprehensive testing.
Applications
- Microprocessor Systems: Ensures reliable operation in microprocessor-based systems.
- Computer Systems: Suitable for use in computers and other computing devices.
- Consumer Electronics: Used in various consumer electronic devices.
- Industrial Control Systems: Ideal for industrial control and automation systems.
- Telecommunication Equipment: Applied in telecommunication equipment for reliable voltage monitoring.
- Automotive Systems: Automotive-grade version available, suitable for automotive applications.
Q & A
- What is the primary function of the ADM709MARZ-REEL?
The primary function is to monitor the power supply and generate a system reset during power-up, power-down, and brownout conditions.
- What are the available threshold voltage levels for the ADM709?
The available threshold voltage levels are +5 V, +3.3 V, and +3 V, with specific suffixes indicating the threshold voltage (e.g., ADM709M for 4.40 V).
- What is the quiescent current of the ADM709?
The quiescent current is as low as 35 µA, depending on the operating conditions.
- How long does the RESET output remain low after VCC rises above the threshold?
The RESET output remains low for a minimum of 140 ms after VCC rises above the threshold.
- What is the operating temperature range of the ADM709?
The operating temperature range is from –40°C to +85°C.
- In what package is the ADM709 available?
The ADM709 is available in an 8-pin SOIC (SO-8) package.
- Is the ADM709 suitable for automotive applications?
Yes, there is an automotive-grade version of the ADM709, making it suitable for automotive applications.
- What type of output does the ADM709 have?
The ADM709 has a push-pull, totem pole output capable of driving loads effectively.
- Does the ADM709 have built-in fault protection?
Yes, the ADM709 includes built-in fault protection for enhanced system reliability.
- Is the ADM709 compatible with standard surface mount processes?
Yes, the ADM709 is foundationally compatible with standard surface mount processes.
