Overview
The ADT7461ARMZ-R7, produced by onsemi, is a dual-channel digital thermometer and under/over temperature alarm. It is designed for use in PCs, thermal management systems, and other applications requiring precise temperature monitoring. The device is pin- and register-compatible with the ADM1032, making it a versatile option for various thermal management needs.
Key Specifications
| Parameter | Value | Description |
|---|---|---|
| Temperature Resolution | 0.25°C (Remote), 1°C (Local) | Resolution of the temperature measurements for remote and local channels |
| Temperature Accuracy | 1°C (Remote), 3°C (Local) | Accuracy of the temperature measurements for remote and local channels |
| Temperature Measurement Range | 0°C to +127°C (Default), –55°C to +150°C (Extended) | Switchable temperature measurement range |
| Interface | 2-wire SMBus | Serial interface compatible with SMBus standards |
| Operating Current | 170 µA | Current consumption during normal operation |
| Standby Current | 5.5 µA | Current consumption in standby mode |
| Package Type | 8-lead SOIC NB or 8-lead MSOP | Available package types for the device |
| RoHS Compliance | Yes | Compliance with RoHS regulations |
Key Features
- On-Chip and Remote Temperature Sensor: Measures both local and remote temperatures with high resolution and accuracy
- Series Resistance Cancellation: Automatically cancels up to 3 kΩ 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: Switchable between 0°C to +127°C and –55°C to +150°C
- Programmable Over/Under Temperature Limits: Allows setting of custom temperature limits for alarms
- Up to Two Overtemperature Fail-Safe THERM Outputs: Provides fail-safe outputs for controlling cooling fans or other devices
Applications
- Desktop and Notebook Computers: Ideal for thermal management in personal computers
- Industrial Controllers: Suitable for industrial environments requiring precise temperature monitoring
- Smart Batteries: Used in battery management systems to monitor temperature
- Embedded Systems: Applicable in various embedded systems requiring thermal monitoring
- Instrumentation: Used in instrumentation and other precision equipment
- Game Consoles and DSL Line Cards: Also used in gaming consoles and DSL line cards for thermal management
Q & A
- What is the primary function of the ADT7461ARMZ-R7?
The ADT7461ARMZ-R7 is a dual-channel digital thermometer and under/over temperature alarm designed for thermal management in various applications.
- What is the resolution and accuracy of the remote temperature channel?
The remote temperature channel has a resolution of 0.25°C and an accuracy of 1°C.
- What is the default temperature measurement range of the ADT7461ARMZ-R7?
The default temperature measurement range is 0°C to +127°C, but it can be extended to –55°C to +150°C.
- What type of interface does the ADT7461ARMZ-R7 use?
The device uses a 2-wire SMBus serial interface.
- What is the operating current of the ADT7461ARMZ-R7?
The operating current is 170 µA.
- Can the ALERT output be reconfigured?
Yes, the ALERT output can be reconfigured as a second THERM output if required.
- What is the purpose of the series resistance cancellation feature?
The series resistance cancellation feature automatically cancels up to 3 kΩ of resistance in series with the remote diode to allow noise filtering.
- Is the ADT7461ARMZ-R7 RoHS compliant?
Yes, the ADT7461ARMZ-R7 is RoHS compliant.
- What are some common applications of the ADT7461ARMZ-R7?
Common applications include desktop and notebook computers, industrial controllers, smart batteries, embedded systems, and instrumentation.
- What package types are available for the ADT7461ARMZ-R7?
The device is available in 8-lead SOIC NB and 8-lead MSOP packages.
