Overview
The ADT7461AARMZ-REEL, produced by onsemi, is a dual-channel digital thermometer designed for thermal management in various electronic systems. It is intended for use in PCs, notebook and desktop computers, game consoles, RFID readers, graphics cards, LCD TVs, and other applications requiring precise temperature monitoring. The device is pin- and register-compatible with the ADM1032 and the ADT7461, making it a versatile option for system designers. It features on-chip and remote temperature sensing capabilities, along with programmable over/undertemperature limits and series resistance cancellation to enhance accuracy and noise filtering.
Key Specifications
| Specification | Value |
|---|---|
| Accuracy | ±1°C (±2.5°C) |
| Resolution | 0.25°C (remote), 1°C (local) |
| Operating Temperature | -40°C ~ 120°C |
| Sensing Temperature Range | -64°C ~ 191°C |
| Output Type | SMBus |
| Package | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) |
| Supply Voltage | 3V ~ 3.6V |
| Operating Current | 240 µA |
| Standby Current | 5 µA |
| Sensor Type | Digital, Local/Remote |
Key Features
- On-chip and remote temperature sensor with 0.25°C resolution on the remote channel and 1°C resolution on the local channel
- Extended, switchable temperature measurement range: 0°C to +127°C (default) or 64°C to +191°C
- Series resistance cancellation up to 1.5 kΩ (typical) for noise filtering
- Programmable over/undertemperature limits and offset registers for system calibration
- 2-wire SMBus serial interface with SMBus alert support
- Up to two overtemperature fail-safe THERM outputs
- Configurable ALERT output
Applications
- Thermal management in PCs and notebooks
- Game consoles
- RFID readers
- Graphics cards
- LCD TVs
- Dishwashers
- DSL Line Cards
Q & A
- What is the primary function of the ADT7461AARMZ-REEL? The ADT7461AARMZ-REEL is a dual-channel digital thermometer and undertemperature/overtemperature alarm designed for thermal management in electronic systems.
- What are the temperature sensing ranges of the ADT7461AARMZ-REEL? The device can sense temperatures from -64°C to 191°C and has an extended, switchable range of 0°C to +127°C or 64°C to +191°C.
- What is the resolution of the temperature sensor? The remote channel has a resolution of 0.25°C, while the local channel has a resolution of 1°C.
- What is the operating voltage of the ADT7461AARMZ-REEL? The operating voltage is between 3V and 3.6V.
- What interface does the ADT7461AARMZ-REEL use? The device uses a 2-wire SMBus serial interface with SMBus alert support.
- What is the series resistance cancellation feature? The device can automatically cancel up to 1.5 kΩ (typical) of resistance in series with the temperature monitoring diode to allow noise filtering.
- What are the typical applications of the ADT7461AARMZ-REEL? It is used in PCs, notebooks, game consoles, RFID readers, graphics cards, LCD TVs, and other thermal management systems.
- What is the standby current of the ADT7461AARMZ-REEL? The standby current is 5 µA.
- Is the ADT7461AARMZ-REEL RoHS compliant? Yes, the device is RoHS compliant.
- What package types are available for the ADT7461AARMZ-REEL? The device is available in 8-TSSOP and 8-MSOP packages.
