Overview
The ADM1031ARQ, produced by Analog Devices Inc., is an ACPI-compliant, three-channel digital thermometer and dual PWM fan controller. This device is designed for thermal management in microprocessor-based systems, particularly optimized for use in personal computers. It offers high accuracy temperature monitoring and robust fan control capabilities, ensuring efficient and reliable thermal management.
Key Specifications
| Parameter | Value |
|---|---|
| Temperature Accuracy | ±1°C |
| Number of Temperature Channels | 3 |
| Fan Control Outputs | 2 PWM outputs |
| Duty Cycle Range | 33% to 100% |
| TACH Inputs | Reprogrammable as analog inputs |
| Serial Bus Interface | SMBus |
| Address Selection | Hardwired address pin (ADD) |
| Package Type | 16-QSOP |
| Operating Temperature Range | 0°C to 100°C |
Key Features
- ACPI-compliant for seamless integration with system management software.
- Three-channel digital thermometer with ±1°C accuracy.
- Dual PWM fan control with duty cycle range from 33% to 100%.
- TACH inputs that can be reprogrammed as analog inputs for 2-wire fans.
- Dedicated fan speed control loop without CPU intervention.
- Stalled fan detection and alert capabilities.
- SMBus interface for communication with the system.
- Hardwired address selection via the ADD pin.
Applications
The ADM1031ARQ is primarily used in thermal management systems of personal computers and other microprocessor-based systems. It is particularly useful in environments where precise temperature monitoring and efficient fan control are critical, such as in servers, workstations, and high-performance computing systems.
Q & A
- What is the primary function of the ADM1031ARQ?
The primary function of the ADM1031ARQ is to serve as a three-channel digital thermometer and dual PWM fan controller for thermal management in microprocessor-based systems. - How accurate is the temperature monitoring of the ADM1031ARQ?
The ADM1031ARQ offers temperature monitoring with an accuracy of ±1°C. - How many PWM fan control outputs does the ADM1031ARQ have?
The ADM1031ARQ has two PWM fan control outputs. - What is the duty cycle range of the PWM fan control outputs?
The duty cycle range of the PWM fan control outputs is from 33% to 100%. - Can the TACH inputs be reprogrammed?
Yes, the TACH inputs can be reprogrammed as analog inputs to measure the speed of 2-wire fans. - How does the ADM1031ARQ communicate with the system?
The ADM1031ARQ communicates with the system via an SMBus interface. - How is the address of the ADM1031ARQ selected?
The address of the ADM1031ARQ is selected via a hardwired address pin (ADD). - What is the operating temperature range of the ADM1031ARQ?
The operating temperature range of the ADM1031ARQ is from 0°C to 100°C. - Does the ADM1031ARQ support stalled fan detection?
Yes, the ADM1031ARQ supports stalled fan detection and alert capabilities. - Is CPU software required for fan control?
No, the ADM1031ARQ has a dedicated fan speed control loop that operates without CPU intervention.
