www.fairchildsemi.com

REV. 1.0.5 10/2/03

Features

• User Configurable to 9, 10, 11 or 12-bit Resolution

• Precision Calibrated to ±1°C from 0°C to 100°C Typical

•Temperature Range: –40°C to 125°C

•Low Operating Current (less than 250µA)

•Low Self Heating (0.2°C max in still air)

• Operating Voltage Range: 2.7V to 5.5V

Applications

• Battery Management

•FAX Management

• Printers

• Portable Medical Instruments

•HVAC

•Power Supply Modules

• Disk Drives

• Computers

• Automotive

Description

Within the FM75 are: a high-precision CMOS temperature

sensor, a Delta-Sigma analog-to-digital converter and a

SMBus compatible serial digital interface. Typical accuracy

is ±2°C over the full temperature range of –40°C to 125°C

and to ±1°C over the range of 0°C to 100°C, with 9- to 12-bit

resolution. Default resolution is 9 bits.

Thermal Alarm output, OS (Over-limit Signal) supports

Interrupt and Comparator modes. OS is active, if the

user-programmable trip-temperature is exceeded. When

the temperature falls below the trip-temperature plus the

user-programmable hysteresis limit, OS is disabled.

Available packages are surface mount SOIC-8 (SOP-8) and

MSOP-8.

Application Diagram

FM75

A0

A1

A2

SDA

SCL

1

2

3

5

6

7

O.S.

4

8

8 Pin

Configuration

User

Programmable

Address

SMBus

Interface

2.7 to 5.5V

FM75

Low Voltage 2-Wire Digital Temperature Sensor

with Thermal Alarm