OMO ElectronicOMO Electronic
Expand menu
Hello, Sign inMy Account
0 Cart

FM75M8

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
tm
December 2006
FM75 Rev. 1.0.8
FM75 Low-Voltage Two-Wire Digital Temperature Sensor with Thermal Alarm
FM75
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
Figure 1. Typical Application Diagram
Ordering Information
FM75
A0
A1
A2
SDA
SCL
1
2
3
5
6
7
OS
4
8
8-Pin
Configuration
User
Programmable
Address
SMBus
Interface
2.7 to 5.5V
Part Number Package Temperature Range Packing Method
FM75M8x 8-Lead SOIC -40°C to +125°C 2500 Units, Tape and Reel
FM75 Low-Voltage Two-Wire Digital Temperature Sensor with Thermal Alarm
© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
FM75 Rev. 1.0.8 2
Pin Assignments
Figure 2. Pin Assignments
Pin Descriptions
Pin # Name Direction Description
1 SDA Input/Output Serial Data. Open drain to I/O-data pin for two-wire interface.
2SCLInputSerial Clock. Clock for two-wire serial interface.
3 OS Output Over-Limit Signal. Open drain thermostat output that indicates if
the temperature exceeds user-programmable limits. Default is
active LOW.
4 GND Supply Ground
5, 6, 7 A0, A1, A2 Input Address Least Significant Bits (LSBs). User selectable address
pins for the three LSBs of the serial interface address.
8V
DD
Supply Supply Voltage
V
DD
A0
A1
A2
SDA
SCL
OS
GND
1
2
3
4
8
7
6
5
FM75
FM75 Low-Voltage Two-Wire Digital Temperature Sensor with Thermal Alarm
© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com
FM75 Rev. 1.0.8 3
Absolute Maximum Ratings
The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed.
The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics
tables are not guaranteed at the absolute maximum ratings. The “Recommended Operating Conditions” table defines
the conditions for actual device operation.
Note:
1. Human Body Model: 100pF capacitor discharged through a 1.5kΩ resistor into each pin. Machine Model: 200pF
capacitor discharged directly into each pin.
Electrical Characteristics
(2)
-40°C ð T
A
ð +125°C, V
CC
= 5.0V unless otherwise noted. Specifications are subject to change without notice.
Notes:
2. These specifications are guaranteed only for the test conditions listed.
3. This specification only indicates how often temperature information is updated to the temperature register.
The FM75 can be read at any time without interrupting the temperature conversion process.
4. Accuracy (expressed in °C) = the difference between the FM75 output temperature and the measured temperature.
Parameter Min. Typ. Max. Units
Supply Voltage +7 V
Output Voltage V
CC
+ 0.5 V
Output Current 10 mA
Storage Temperature Range -60 +150 °C
Lead Soldering Temperature 220 °C
ESD
(1)
Human Body Model
Machine Model
2000
250
V
V
Symbol Parameter Conditions Min. Typ. Max. Units
T
MIN
, T
MAX
Specified Temperature Range -40 +125 °C
Temperature Conversion Time
(3)
90 ms
Accuracy
(4)
T
A
= +25°C
T
A
= +100°C
T
A
= -40°C (T
MIN
)
T
A
= +125°C (T
MAX
)
-2
-3
-4
-4
+2
+3
+4
+4
°C
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

FM75M8

Mfr. #:
Buy FM75M8
Manufacturer:
ON Semiconductor / Fairchild
Description:
Board Mount Temperature Sensors Low Voltage Digital I2C comp Temp Sensor
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet