Overview
The ADT7473/ADT7473-1 controller, specifically the ADT7473ARQZ-001, is a sophisticated thermal monitor and multiple PWM fan controller designed for applications that require active system cooling, particularly in noise-sensitive or power-sensitive environments. This controller is capable of driving fans using either low or high frequency drive signals and can monitor the temperature of up to two remote sensor diodes in addition to its own internal temperature. It also measures and controls the speed of up to four fans to minimize acoustic noise.
Key Specifications
| Parameter | Unit | Max | Typ | Min | Conditions |
|---|---|---|---|---|---|
| Operating Temperature Range | °C | 125 | -40 | ||
| Temperature Accuracy | % | ±2.5% | |||
| Input High Voltage (VIH) - TACH Inputs | V | 3.6 | 2.0 | ||
| Input Low Voltage (VIL) - TACH Inputs | V | 0.8 | -0.3 | ||
| Clock Frequency (fSCLK) | kHz | 400 | 10 | ||
| Package Type | QSOP-16 | ||||
| Lead Free Status / RoHS Status | Lead free / RoHS Compliant |
Key Features
- Support for both internal and external temperature sensing with a wide sensing temperature range from -40°C to 125°C.
- High temperature accuracy of ±2.5%.
- Ability to drive fans using either low or high frequency drive signals.
- Monitoring and control of up to four fans for optimal speed and minimal acoustic noise.
- Series resistance cancellation on the remote channel.
- Dynamic TMIN control mode to optimize system acoustics.
- Automatic fan speed control based on measured temperature.
- Enhanced acoustic mode to reduce user perception of changing fan speeds.
- Thermal protection feature via THERM output and thermal control circuit via THERM input.
- 3-wire and 4-wire fan speed measurement capabilities.
- SMBus output for communication.
Applications
- Notebook and Desktop Computers
- Servers
- Game Consoles
- RFID Readers
- Other noise-sensitive or power-sensitive applications requiring active system cooling.
Q & A
- What is the primary function of the ADT7473/ADT7473-1 controller?
The primary function is to monitor temperature and control fan speeds in noise-sensitive or power-sensitive applications.
- How many fans can the ADT7473/ADT7473-1 controller manage?
It can manage up to four fans.
- What is the temperature range supported by the ADT7473/ADT7473-1?
The temperature range is from -40°C to 125°C.
- What is the temperature accuracy of the ADT7473/ADT7473-1?
The temperature accuracy is ±2.5%.
- What communication interface does the ADT7473/ADT7473-1 use?
It uses the SMBus interface.
- What are the fan drive signal options for the ADT7473/ADT7473-1?
The controller can drive fans using either low or high frequency drive signals.
- Does the ADT7473/ADT7473-1 support both internal and external temperature sensing?
Yes, it supports both internal and external temperature sensing.
- What is the package type of the ADT7473ARQZ-001?
The package type is QSOP-16.
- Is the ADT7473ARQZ-001 RoHS compliant?
Yes, it is lead-free and RoHS compliant.
- What are some of the applications where the ADT7473/ADT7473-1 is commonly used?
Common applications include notebook and desktop computers, servers, game consoles, and RFID readers.
