FM75_06 Datasheet, PDF (1/16 Pages) Fairchild Semiconductor – Low-Voltage Two-Wire Digital Temperature Sensor with Thermal Alarm

December 2006
FM75
tm
Low-Voltage Two-Wire Digital Temperature Sensor with
Thermal Alarm
Features
■ User Configurable to 9, 10, 11 or 12-bit Resolution
■ Precision Calibrated to ±1°C, 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 Systems
■ Power Supply Modules
■ Disk Drives
■ Computers
■ Automotive Components
Description
The FM75 contains a high-precision CMOS temperature
sensor, a Delta-Sigma analog-to-digital converter, and a
SMBus-compatible serial digital interface. Typical accu-
racy 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 is 9).
Thermal alarm output, over-limit signal (OS) 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, the OS is disabled.
Available in a surface mount SOIC-8 (SOP-8) package.
Application Diagram
2.7 to 5.5V
A0 ⁷
User
Programmable
A1
6
Address
A2 ⁵
SMBus _SDA ¹
Interface
SCL
2
8
FM75
8-Pin
Configuration
4
3 _OS
Figure 1. Typical Application Diagram
Ordering Information
Part Number
FM75M8x
Package
8-Lead SOIC
Temperature Range
-40°C to +125°C
© 2006 Fairchild Semiconductor Corporation
FM75 Rev. 1.0.8
Packing Method
2500 Units, Tape and Reel
www.fairchildsemi.com