SMSC EMCT03
PRODUCT PREVIEW
Revision 2.1 (09-03-04)
Data Brief
EMCT03
1C Triple SMBus
Temperature Sensor
General Description
The EMCT03 is a System Management Bus (SMBus)
temperature sensor that is capable of monitoring three
temperature zones for a PC or embedded environment.
The three temperature zones consist of two external and
one internal temperature diode. The internal 11 bit
sigma-delta ADC architecture with digital filtering
attributes to superb linearity and immunity to
interference and noise. An extended temperature format
may be selected for compatibility with a broad range of
CPUs. Selectable conversion rates and standy mode
support low-power operation.
Applications
Desktop and Notebook Computers
Thermostats
Smart batteries
Industrial / Automotive
Features
Low Power; 3.0V to 3.6V Supply
-- Programmable conversion rate
-- < 1mA at 16 Conversions per Second
-- < 3uA in Standy Mode
SMBus 2.0 Compliant interface
Two External Temperature Monitors:
-- Range -64
C to +191C
-- 0.125
C resolution
--
1C Accuracy 40C to 80C
-- Diode Fault Reporting
Internal Temperature Monitor
-- Range 0
C to +85C
-- 0.125
C resolution
--
3C Accuracy 0C to 85C
Programmable Conversion Rate
MSOP-8 3x3mm Package
Simplified Block Diagram
EMCT03
Local Temp
Diode
Switching
Current
SMCLK
Local Temp
Register
Configuration
Register
Status Register
SM
B
u
s In
ter
f
a
c
e
Remote Temp
Register 1
Remote Temp
Register 2
SMDATA
11-bit
Sigma Delta
ADC
Anal
og
Mu
x
DP1
DN1
DP2
DN2
Digital Mux
and
Byte Interlock
1C Triple SMBus Temperature Sensor
Revision 2.1 (09-03-04)
2
SMSC EMCT03
PRODUCT PREVIEW
Package Outline
Figure 1 8-Pin MSOP Package Outline - 3x3mm Body 0.65mm Pitch
Table 1 8-Pin MSOP Package Parameters
Notes:
1. Controlling Unit: millimeters.
2. Tolerance on the true position of the leads is 0.065 mm maximum.
3. Package body dimensions D and E1 do not include mold protrusion or flash. Dimensions D and
E1 to be determined at datum plane H. Maximum mold protrusion or flash is 0.15mm (0.006 inches)
per end, and 0.15mm (0.006 inches) per side.
4. Dimension for foot length L measured at the gauge plane 0.25 mm above the seating plane.
5. Details of pin 1 identifier are optional but must be located within the zone indicated.
MIN
NOMINAL
MAX
REMARKS
A
0.80
~
1.10
Overall Package Height
A1
0.05
~
0.15
Standoff
A2
0.75
0.85
0.95
Body Thickness
D
2.80
3.00
3.20
X Body Size
E
4.65
4.90
5.15
Y Span
E1
2.80
~
3.20
Y body Size
H
0.08
~
0.23
Lead Foot Thickness
L
0.40
~
0.80
Lead Foot Length
L1
0.95 REF
Lead Length
e
0.65 BSC
Lead Pitch
0
o
~
8
o
Lead Foot Angle
W
0.22
~
0.38
Lead Width
ccc
~
~
0.10
Coplanarity
1C Triple SMBus Temperature Sensor
SMSC EMCT03
3
Revision 2.1 (09-03-04)
PRODUCT PREVIEW
ORDER NUMBER(S):
EMCT03-ACZB for 8-pin MSOP package
EMCT03-ACZB-TR for 8-pin MSOP package (Tape and Reel)
EMCT03-ACZL for 8-pin MSOP package (Lead Free)
EMCT03-ACZL-TR for 8-pin MSOP package (Lead Free, Tape and Reel)
Evaluation Board Available upon request.
80 Arkay Drive
Hauppauge, NY 11788
(631)
435-6000
FAX (631) 273-3123
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