ADM1031ARQ

$1.81

Description：IC SENSOR 2-TEMP/FAN CTRL 16QSOP
Series：-
Mfr：onsemi
Package：Tube,Tube

SKU:3e88dfd4b68c Category: Thermal Management Brand: onsemi

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Product introduction

Product Detailed Parameters

Description：IC SENSOR 2-TEMP/FAN CTRL 16QSOP
Series：-
Mfr：onsemi
Package：Tube,Tube
Function：Fan Control, Temp Monitor
Sensor Type：Internal and External
Sensing Temperature：0°C ~ 100°C, External Sensor
Accuracy：±1°C Local, ±0.5°C Remote
Topology：ADC, Comparator, Multiplexer, Register Bank
Output Type：SMBus
Output Alarm：Yes
Output Fan：Yes
Voltage - Supply：3V ~ 5.5V
Operating Temperature：0°C ~ 100°C
Grade：-
Qualification：-
Mounting Type：Surface Mount
Package / Case：16-SSOP (0.154", 3.90mm Width)
Supplier Device Package：16-QSOP

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ADM1031ARQ

Overview

The ADM1031ARQ is an ACPI-compliant, three-channel digital thermometer and under/overtemperature alarm designed for personal computers and thermal management systems. It features a 3.0 V to 5.5 V supply range and operates within a temperature range of 0°C to 70°C. The device provides 0.125°C resolution on external channels and 0.25°C resolution on the local sensor. It includes dual PWM fan control with programmable frequency and duty cycle, tachometer measurement for two fans, and analog input for two-wire fan speed sensing via a sense resistor.

Feature Summary

Intelligent temperature monitoring with optimized accuracy for Pentium III systems
Dual pulse width modulation fan control with independent automatic speed regulation
Three-channel digital thermometry with remote diode measurement capability
System Management Bus interface with Automatic Remote Addressing support

Applications

Notebook PCs
Network Servers
Personal Computers
Telecommunications Equipment

Procurement Notes

Verify component authenticity through authorized distribution channels due to discontinued status. Confirm package integrity and pin alignment against the 16-SSOP specification. Validate datasheet revisions to ensure compatibility with current system design requirements before integration.

Selection Notes

Select this component for applications requiring precise thermal management in legacy or specific industrial PC architectures. Ensure the design supports SMBus communication protocols and accommodates the required external sensor connections for accurate remote temperature monitoring.

Part Context

This part belongs to the ADM1030 family of intelligent temperature monitors and fan controllers manufactured by onsemi. It serves as a specialized thermal management solution for computing environments where ACPI compliance and precise CPU throttling are necessary for system stability and performance optimization.