Overview
The ADT7461ARZ-REEL is a dual-channel digital thermometer and under/over temperature alarm designed by onsemi. It is specifically intended for use in PCs, notebook computers, and various thermal management systems. The device is pin- and register-compatible with the ADM1032 and offers several advanced features such as series resistance cancellation, configurable ALERT output, and an extended, switchable temperature measurement range.
Key Specifications
| Specification | Value |
|---|---|
| Package Type | 8-lead SOIC or 8-lead MSOP |
| Number of Pins | 8 |
| Mount Type | Surface Mount |
| Min Supply Voltage | 3V |
| Max Supply Voltage | 5.5V |
| Operating Current | 170 µA |
| Standby Current | 5.5 µA |
| Interface | 2-wire SMBus, I2C, Serial |
| Resolution | 0.25°C (Remote), 1°C (Local) |
| Accuracy | ±1°C (Remote), ±3°C (Local) |
| Temperature Measurement Range | 0°C to +127°C (Default), –55°C to +150°C (Extended) |
| Operating Temperature Range | 0°C to 125°C |
| Lead Free | Yes |
| RoHS Compliant | Yes |
Key Features
- On-Chip and Remote Temperature Sensor
- Series Resistance Cancellation up to 3 kΩ (typical)
- Configurable ALERT output and up to two overtemperature fail-safe THERM outputs
- Extended, switchable temperature measurement range (0°C to +127°C or –55°C to +150°C)
- 2-wire SMBus serial interface with SMBus alert support
- Programmable over/under temperature limits and offset registers for system calibration
- Low operating current (170 µA) and standby current (5.5 µA)
Applications
- Desktop and Notebook Computers
- Industrial Controllers
- Smart Batteries
- Embedded Systems
- Instrumentation
- Game Consoles
- RFID Readers
- DSL Line Cards
Q & A
- What is the primary function of the ADT7461? The ADT7461 is a dual-channel digital thermometer and under/over temperature alarm.
- What are the key features of the ADT7461? Key features include series resistance cancellation, configurable ALERT output, and an extended, switchable temperature measurement range.
- What is the default temperature measurement range of the ADT7461? The default temperature measurement range is 0°C to +127°C.
- Can the temperature measurement range be extended? Yes, it can be switched to a wider range of –55°C to +150°C.
- What interface does the ADT7461 use for communication? The ADT7461 communicates over a 2-wire SMBus serial interface.
- What is the accuracy of the remote temperature sensor? The remote temperature sensor has an accuracy of ±1°C.
- What is the operating current of the ADT7461? The operating current is 170 µA.
- Is the ADT7461 RoHS compliant? Yes, the ADT7461 is RoHS compliant.
- What are some common applications of the ADT7461? Common applications include desktop and notebook computers, industrial controllers, smart batteries, and embedded systems.
- Can the ALERT output be reconfigured? Yes, the ALERT output can be reconfigured as a second THERM output.
