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Manufacturer Part #


ADM1032 Series 5.5 V ±1° C Remote and Local System Temperature Monitor-MSOP-8

ECAD Model:
Mfr. Name: ON Semiconductor
Standard Pkg:
Product Variant Information section
Date Code: 1848
Product Specification Section
Technical Attributes
Attributes Table
Output Type: Digital
Supply Voltage: 3V to 5.5V
Operating Temp Range: 0°C to 120°C
Operating Temp Range (°F): 32°F to 248°F
Output Current-Max: 170µA
Package Style:  MSOP-8
Mounting Method: Surface Mount
Features & Applications

The ADM1032 is a dual−channel digital thermometer and under/overtemperature alarm intended for use in PCs and thermal management systems. The device can measure the temperature of a remote thermal diode, which can be located on the processor die or can be a discrete device (2N3904/06), accurate to 1°C. A novel measurement technique cancels out the absolute value of the transistor’s base emitter voltage so that no calibration is required. The ADM1032 also measures its ambient temperature.

The ADM1032 communicates over a 2−wire serial interface compatible with System Management Bus (SMBus) standards. Under/overtemperature limits can be programmed into the device over the SMBus, and an ALERT output signals when the on−chip or remote temperature measurement is out of range. This output can be used as an interrupt or as a SMBus alert. The THERM output is a comparator output that allows CPU clock throttling or on/off control of a cooling fan. An ADM1032−1 and ADM1032−2 are available. The difference between the ADM1032 and the ADM1032−1 is the default value of the external THERM limit. The ADM1032−2 has a different SMBus address. The SMBus address of the ADM1032−2 is 0x4D.

Key Features:

  • On−Chip and Remote Temperature Sensing
  • Offset Registers for System Calibration
  • 0.125°C Resolution/1°C Accuracy on Remote Channel
  • 1°C Resolution/3°C Accuracy on Local Channel
  • Fast (Up to 64 Measurements Per Second)
  • 2−Wire SMBus Serial Interface
  • Supports SMBus Alert
  • Programmable Under/Overtemperature Limits
  • Programmable Fault Queue
  • Overtemperature Fail−Safe THERM Output
  • Programmable THERM Limits
  • Programmable THERM Hysteresis
  • 170 µA Operating Current
  • 5.5 µA Standby Current
  • 3.0 V to 5.5 V Supply
  • Small 8−Lead SOIC and MSOP Packages
  • These are Pb−Free Devices


  • Desktop and Notebook Computers
  • Smart Batteries
  • Industrial Controllers
  • Telecommunications Equipment
  • Instrumentation
  • Embedded Systems
Pricing Section
Global Stock:
On Order:
Factory Stock:Factory Stock:
Factory Lead Time:
9 Weeks
Minimum Order:
Multiple Of:
Web Price
Product Variant Information section