SMSC EMC1023
DATASHEET
Revision 1.2 (04-15-05)
Datasheet
EMC1023
1C Triple Temperature
Sensor with Resistance
Error Correction
General Description
The EMC1023 is a System Management Bus (SMBus)
temperature sensor that is capable of monitoring three
temperature zones. Four unique part numbers can be
ordered, each with a different SMBus Address. The
three temperature zones consist of two external diodes
and one internal monitor.
Extended features include resistance error correction
and ideality factor configuration eliminating both major
sources of temperature measurement error.
1
The 11-bit
delta-sigma temperature-to-digital converter provides
superb linearity, excellent noise immunity and
repeatable temperature readings. An extended
temperature format may be selected for compatibility
with a broad range of CPUs. Selectable conversion
rates and standby mode support low-power operation.
Features
Resistance Error Correction
Ideality Factor Configuration
Accepts 2200pF cap for noise suppression
Remote Thermal Zones
--
1C Accuracy (40C to 80C)
-- 0.125
C resolution
Internal Thermal Zone
--
3C Accuracy (0C to 85C)
-- 0.125
C resolution
Low Power; 3.0V to 3.6V Supply
Four Unique SMBus Addresses Available
Programmable Conversion Rate
MSOP-8 3x3mm Package; Green, Lead-Free
Package also available.
Applications
Desktop and Notebook Computers
Thermostats
Smart batteries
Industrial/Automotive
1.Patents pending.
Simplified Block Diagram
EMC1023
Local Temp
Diode
Switching
Current
SMCLK
Local Temp
Register
Configuration
Register
Status Register
SM
Bu
s I
n
ter
f
ac
e
Remote Temp
Register 1
Remote Temp
Register 2
SMDATA
11-bit
delta-sigma
ADC
An
alo
g
Mux
DP1
DN1
DP2
DN2
Digital Mux
and
Byte Interlock
ORDER NUMBERS
EMC1023-1-ACZB-TR FOR 8 PIN, MSOP PACKAGE (Address - 1001100b)
EMC1023-2-ACZB-TR FOR 8 PIN, MSOP PACKAGE (Address - 1001101b)
EMC1023-3-ACZB-TR FOR 8 PIN, MSOP PACKAGE (Address - 1001000b)
EMC1023-4-ACZB-TR FOR 8 PIN, MSOP PACKAGE (Address - 1001001b)
EMC1023-1-ACZL-TR FOR 8 PIN, MSOP PACKAGE (Address - 1001100b) (Green, Lead-Free)
EMC1023-2-ACZL-TR FOR 8 PIN, MSOP PACKAGE (Address - 1001101b) (Green, Lead-Free)
EMC1023-3-ACZL-TR FOR 8 PIN, MSOP PACKAGE (Address - 1001000b) (Green, Lead-Free)
EMC1023-4-ACZL-TR FOR 8 PIN, MSOP PACKAGE (Address - 1001001b) (Green, Lead-Free)
Reel size is 4,000 pieces.
Evaluation Board available upon request. (EVB-EMC1023)
80 Arkay Drive
Hauppauge, NY 11788
(631)
435-6000
FAX (631) 273-3123
Copyright SMSC 2005. All rights reserved.
Circuit diagrams and other information relating to SMSC products are included as a means of illustrating typical applications. Consequently, complete
information sufficient for construction purposes is not necessarily given. Although the information has been checked and is believed to be accurate, no
responsibility is assumed for inaccuracies. SMSC reserves the right to make changes to specifications and product descriptions at any time without
notice. Contact your local SMSC sales office to obtain the latest specifications before placing your product order. The provision of this information does
not convey to the purchaser of the described semiconductor devices any licenses under any patent rights or other intellectual property rights of SMSC
or others. All sales are expressly conditional on your agreement to the terms and conditions of the most recently dated version of SMSC's standard
Terms of Sale Agreement dated before the date of your order (the "Terms of Sale Agreement"). The product may contain design defects or errors
known as anomalies which may cause the product's functions to deviate from published specifications. Anomaly sheets are available upon request.
SMSC products are not designed, intended, authorized or warranted for use in any life support or other application where product failure could cause
or contribute to personal injury or severe property damage. Any and all such uses without prior written approval of an Officer of SMSC and further
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ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
1C Triple Temperature Sensor with Resistance Error Correction
Datasheet
Revision 1.2 (04-15-05)
2
SMSC EMC1023
DATASHEET
1C Triple Temperature Sensor with Resistance Error Correction
Datasheet
SMSC EMC1023
3
Revision 1.2 (04-15-05)
DATASHEET
Chapter 1 Pin Configuration
Figure 1.1 EMC1023 Pin Configuration
Table 1.1 Pin Description
PIN
PIN NO.
DESCRIPTION
DP1
1
Positive Analog Input for External Temperature Diode 1
DN1
2
Negative Analog Input for External Temperature Diode 1
DP2
3
Positive Analog Input for External Temperature Diode 2
DN2
4
Negative Analog Input for External Temperature Diode 2
GND
5
Ground
VDD
6
Supply Voltage
SMDATA
7
System Management Bus Data Input/Output, open drain output
SMCLK
8
System Management Bus Clock Input
EM C1023
TO P VIEW
8
7
6
5
1
2
3
4
D P1
D N 1
DP2
D N 2
SM C LK
SM DATA
VD D
G N D
1C Triple Temperature Sensor with Resistance Error Correction
Datasheet
Revision 1.2 (04-15-05)
4
SMSC EMC1023
DATASHEET
Note: Stresses above those listed could cause damage to the device. This is a stress rating only
and functional operation of the device at any other condition above those indicated in the
operation sections of this specification is not implied. When powering this device from
laboratory or system power supplies, it is important that the Absolute Maximum Ratings not be
exceeded or device failure can result. Some power supplies exhibit voltage spikes on their
outputs when the AC power is switched on or off. In addition, voltage transients on the AC
power line may appear on the DC output. If this possibility exists, it is suggested that a clamp
circuit be used.
Table 1.2 Absolute Maximum Ratings
DESCRIPTION
RATING
UNIT
Supply Voltage V
DD
-0.3 to 5.0
V
Voltage on SMDATA and SMCLK
pins
-0.3 to 5.5
V
Voltage on any other pin
-0.3 to VDD+0.3
V
Operating Temperature Range
0 to 85
C
Storage Temperature Range
-55 to 150
C
Lead Temperature Range
Refer to JEDEC
Spec. J-STD-020
Package Thermal Characteristics for MSOP-8
Power Dissipation
TBD
Thermal Resistance (at 0 air flow)
135.9
C/W
ESD Rating, All Pins Human Body Model
2000
V
1C Triple Temperature Sensor with Resistance Error Correction
Datasheet
SMSC EMC1023
5
Revision 1.2 (04-15-05)
DATASHEET
Chapter 2 Electrical Characteristics
Table 2.1 Electrical Characteristics
V
DD
=3.0V to 3.6V, T
A
= 0
C to +85C, Typical values at T
A
= 27
C unless otherwise noted
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
CONDITIONS
DC Power
Supply Voltage
V
DD
3.0
3.3
3.6
V
Average Operating Current
I
DD
36
42
A
1 conversions/s
I
PD
2
4
A
Standby mode
Internal Temperature Monitor
Temperature Accuracy
1
3
C
0
CT
A
85C
Temperature Resolution
0.125
C
External Temperature Monitor
Temperature Accuracy
Remote Diode 40
C to 80C
Remote Diode 0
C to 125C
1
3
C
C
15
CT
A
70C
0
CT
A
85C
Temperature Resolution
0.125
C
ADC
Conversion Time for all three sensors
62
ms
Wake-up from STOP mode
(During one shot command or
transition to RUN mode)
1
ms
Voltage Tolerance (SMDATA,SMCLK)
Voltage at pin
V
TOL
-0.3
5.5
V
SMBus Interface (SMDATA,SMCLK)
Input High Level
V
IH
2.0
V
Input Low Level
V
IL
0.8
V
Input High/Low Current
I
IH
/I
IL
-1
1
A
Hysteresis
500
mV
Input Capacitance
5
pF
Output Low Sink Current
6
mA
SMDATA = 0.6V
SMBus Timing
Clock Frequency
F
SMB
10
400
kHz
Spike Suppression
50
ns
Bus free time Start to Stop
T
BUF
1.3
s
Hold time Start
T
HD:STA
0.6
s
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