aSC7511
LOW-VOLTAGE 2-WIRE DIGITAL TEMPERATURE SENSOR
WITH THERMAL ALARM
PRODUCT SPECIFICATION
Fully Released Specification
Product Description
Pin Configuration
The aSC7511 is a high-precision CMOS temperature
sensor with SMBus compatible serial digital interface,
intended for use in PC thermal management applications.
The aSC7511 can measure temperature of a remote
thermal diode to an accuracy of ±1°C. Internal temperature
can be measured to ±3°C.
SOP-8 and MSOP-8
8
7
6
5
1
2
3
SCL
SDA
VDD
D+
D-
Communication of configuration, temperature and alarm
status takes place over the PC standard System
Management Bus (SMBus).
aSC7511
ALERT /
The aSC7511 features thermal alarm functions with a user-
THERM2
programmable trip and turn-off temperatures. The THERM
output comparator can be set to control a fan while
4
GND
THERM
ALERT signals that the remote or local temperature is
outside of a range of temperatures. ALERT pin may be
optionally configured as
a second THERM output,
THERM2 , controlling a second fan.
The aSC7511 is available in SOP-8 and MSOP-8 surface
mount packages.
Application Diagram
Features
3.3V
•
•
•
•
Local and remote temperature sensors
0.25°C resolution, ±1°C accuracy on remote diode
1°C resolution, ±3°C accuracy on local sensor
1
Extended temperature measurement range 0°C to
+127°C (default) or –55°C to +150°C
2
3
•
•
•
2-wire SMBus serial interface with SMBus alert
Programmable over / under temperature limits
Offset registers for system calibration
CPU
4
aSC7511
THERM
•
One or two over-temperature fail-safe THERM
outputs
7
8
SDA
SCL
SMBus
Interface
ALERT /
THERM2
6
•
8-lead, Pb-free, SOIC (SOP) or MSOP package
Applications
Desktop Computers – Motherboards and Graphics Cards
Laptop Computers
Ordering Information
Temperature Range
and Operating Voltage
Marking
Part Number
Package
How Supplied
aSC7511
Ayww
aSC7511D8
aSC7511M8
8-Lead SOP
-40°C to +125°C, 3.3V
2500 units Tape & Reel
2500 units Tape & Reel
7511
Ayww
8-Lead MSOP -40°C to +125°C, 3.3V
Ayww – Assembly site, year, workweek
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© Andigilog, Inc. 2006
www.andigilog.com
August 2006 - 70A04010