Overview
The ADT7461ARZ-REEL7, produced by onsemi, is a dual-channel digital thermometer and under/over temperature alarm. It is designed for use in PCs and thermal management systems, offering compatibility with the ADM1032. The device features on-chip and remote temperature sensing, making it versatile for various thermal monitoring applications. It communicates via a 2-wire serial interface compatible with system management bus (SMBus) standards, and it includes an ALERT output that signals when the on-chip or remote temperature is out of range.
Key Specifications
| Product Attribute | Attribute Value |
|---|---|
| Manufacturer | onsemi |
| Voltage - Supply | 3V ~ 5.5V |
| Package / Case | 8-SOIC (0.154', 3.90mm Width) |
| Package | Tape & Reel (TR) |
| Output Type | SMBus |
| Operating Temperature | -40°C ~ 120°C |
| Mounting Type | Surface Mount |
| Sensor Type | Digital, Local/Remote |
| Sensing Temperature - Local | -40°C ~ 120°C |
| Sensing Temperature - Remote | -55°C ~ 150°C |
| Resolution | 8 b |
| Accuracy - Highest (Lowest) | ±3°C |
| Features | One-Shot, Output Switch, Programmable Limit, Standby Mode |
Key Features
- On-Chip and Remote Temperature Sensor: Measures both local and remote temperatures with high accuracy.
- Series Resistance Cancellation: Automatically cancels up to 3 kΩ (typical) of resistance in series with the remote diode to allow noise filtering.
- Configurable ALERT Output: The ALERT output can be reconfigured as a second THERM output if required.
- Extended, Switchable Temperature Measurement Range: Defaults to 0°C to +127°C, but can be switched to -55°C to +150°C.
- 2-wire SMBus Serial Interface: Compatible with system management bus (SMBus) standards.
- Programmable Over/Under Temperature Limits: Allows for customizable temperature limits and alerts.
- Low Power Consumption: 170 µA operating current and 5.5 µA standby current.
Applications
- Desktop and Notebook Computers: Ideal for thermal management in personal computers.
- Game Consoles: Used for temperature monitoring and control in gaming systems.
- RFID Readers: Suitable for temperature sensing in RFID reader applications.
- DSL Line Cards: Applied in telecommunications equipment for temperature monitoring.
- Industrial Controllers and Embedded Systems: Used in various industrial and embedded system applications for thermal management).
Q & A
- What is the primary function of the ADT7461ARZ-REEL7?
The ADT7461ARZ-REEL7 is a dual-channel digital thermometer and under/over temperature alarm designed for use in PCs and thermal management systems.
- What is the operating temperature range of the ADT7461ARZ-REEL7?
The operating temperature range is -40°C to 120°C.
- What is the resolution and accuracy of the remote temperature sensor?
The remote temperature sensor has a resolution of 0.25°C and an accuracy of ±1°C.
- How does the ADT7461ARZ-REEL7 communicate with other devices?
The device communicates via a 2-wire serial interface compatible with system management bus (SMBus) standards.
- What is the purpose of the ALERT output on the ADT7461ARZ-REEL7?
The ALERT output signals when the on-chip or remote temperature is out of range and can be reconfigured as a second THERM output if required.
- Can the temperature measurement range of the ADT7461ARZ-REEL7 be adjusted?
Yes, the temperature measurement range can be switched from the default range of 0°C to +127°C to an extended range of -55°C to +150°C.
- What is the power consumption of the ADT7461ARZ-REEL7 in operating and standby modes?
The device consumes 170 µA in operating mode and 5.5 µA in standby mode.
- Is the ADT7461ARZ-REEL7 compatible with other devices?
Yes, it is pin- and register-compatible with the ADM1032.
- What are the common applications of the ADT7461ARZ-REEL7?
Common applications include desktop and notebook computers, game consoles, RFID readers, DSL line cards, and industrial controllers.
- Does the ADT7461ARZ-REEL7 support noise filtering?
Yes, it automatically cancels up to 3 kΩ (typical) of resistance in series with the remote diode to allow noise filtering.
