Overview
The ADT7481ARMZ-REEL is a 3-channel digital thermometer and under/over temperature alarm designed by Analog Devices Inc. This component is intended for use in various thermal management systems, including PCs, and can measure its own ambient temperature or the temperature of two remote thermal diodes. These diodes can be located in CPUs, GPUs, or as discrete diode-connected transistors. The ADT7481 communicates via a 2-wire serial interface compatible with the System Management Bus (SMBus) standards, and it includes an active-low ALERT output that signals when the temperature exceeds programmed limits.
Key Specifications
| Parameter | Value |
|---|---|
| Accuracy | ±1°C (±2.5°C) |
| Resolution | 0.25°C on remote channels, 1°C on local channel |
| Operating Temperature | -40°C ~ 120°C |
| Sensing Temperature | -64°C ~ 191°C |
| Output Type | SMBus |
| Package | 10-MSOP (0.118", 3.00mm Width) |
| Voltage | 3V ~ 3.6V |
| Supply Current | 3mA typ at 0.0625 conversions/sec rate |
| Storage Temperature | -65°C to 150°C |
| Interface | 2-wire SMBus serial interface |
Key Features
- One-Shot, Output Switch, Programmable Limit, and Standby Mode
- Measures its own ambient temperature or the temperature of two remote thermal diodes
- Active-low ALERT output signals when temperature exceeds programmed limits
- Offset registers for system calibration
- Up to 2 overtemperature fail-safe active-low THERM outputs
- Surface Mount packaging
Applications
- Desktop and notebook computers
- Industrial controllers
- Smart batteries
- Automotive systems
- Embedded systems
- Burn-in applications
- Instrumentation
Q & A
- What is the primary function of the ADT7481ARMZ-REEL?
The ADT7481ARMZ-REEL is a 3-channel digital thermometer and under/over temperature alarm designed for thermal management systems. - What types of temperatures can the ADT7481ARMZ-REEL measure?
It can measure its own ambient temperature or the temperature of two remote thermal diodes. - What is the communication interface used by the ADT7481ARMZ-REEL?
The component communicates via a 2-wire serial interface compatible with SMBus standards. - What is the accuracy of the ADT7481ARMZ-REEL?
The accuracy is ±1°C (±2.5°C) depending on the measurement conditions. - What is the operating temperature range of the ADT7481ARMZ-REEL?
The operating temperature range is -40°C to 120°C. - What is the package type of the ADT7481ARMZ-REEL?
The package type is 10-MSOP (0.118", 3.00mm Width). - What is the typical supply voltage for the ADT7481ARMZ-REEL?
The typical supply voltage is 3.3V, with a range of 3V to 3.6V. - What are some of the key features of the ADT7481ARMZ-REEL?
Key features include programmable limits, offset registers for system calibration, and up to 2 overtemperature fail-safe active-low THERM outputs. - In what applications is the ADT7481ARMZ-REEL commonly used?
Common applications include desktop and notebook computers, industrial controllers, smart batteries, automotive systems, embedded systems, burn-in applications, and instrumentation. - What is the storage temperature range for the ADT7481ARMZ-REEL?
The storage temperature range is -65°C to 150°C.
