EMC1422 1??C Temperature Sensor with Hardware Thermal Shutdown Data Brief

EMC1422
1°C Temperature Sensor with
Hardware Thermal Shutdown
PRODUCT FEATURES
Data Brief
General Description
Applications
The EMC1422 is a high accuracy, low cost, System
Management Bus (SMBus) temperature sensor.
Advanced features such as Resistance Error Correction
(REC), Beta Compensation (to support CPU diodes
requiring the BJT/transistor model including 45nm,
65nm and 90nm processors) and automatic diode type
detection combine to provide a robust solution for
complex environmental monitoring applications.
„
Additionally, the EMC1422 provides a hardware
programmable system shutdown feature that is
programmed at part power-up via two pull-up resistor
values and that cannot be masked or corrupted through
the SMBus.
„
„
„
Notebook Computers
Desktop Computers
Industrial
Embedded applications
Features
„
Hardware Thermal Shutdown
— triggers dedicated SYS_SHDN pin
— hardware configured range 77°C to 112°C in 1°C steps
— cannot be disabled or modified by software
„
Support for diodes requiring the BJT/transistor model
„
Pin compatible with ADM1032, MAX6649, and LM99
Automatically determines external diode type and
optimal settings
Resistance Error Correction
External Temperature Monitors
— supports 45nm, 65nm, and 90nm CPU thermal diodes.
„
Each device provides ±1° accuracy for external diode
temperatures and ±2°C accuracy for the internal diode
temperature. The EMC1422 monitors two temperature
channels (one external and one internal).
„
Resistance Error Correction automatically eliminates the
temperature error caused by series resistance allowing
greater flexibility in routing thermal diodes. Beta
Compensation eliminates temperature errors caused by
low, variable beta transistors common in today's fine
geometry processors. The automatic beta detection
feature monitors the external diode/transistor and
determines the optimum sensor settings for accurate
temperature measurements regardless of processor
technology. This frees the user from providing unique
sensor configurations for each temperature monitoring
application. These advanced features plus ±1°C
measurement accuracy provide a low-cost, highly
flexible and accurate solution for critical temperature
monitoring applications.
„
Internal Temperature Monitor
„
3.3V Supply Voltage
Programmable temperature limits for ALERT
Available in Small 8-pin MSOP Lead-free RoHS
Compliant Package
SMSC EMC1422
„
— ±1°C Accuracy (60°C < TDIODE < 100°C)
— 0.125°C Resolution
— Supports up to 2.2nF diode filter capacitor
— ±2°C accuracy
„
„
PRODUCT PREVIEW
Revision 2.0 (08-10-12)
1°C Temperature Sensor with Hardware Thermal Shutdown
Order Numbers:
EMC1422-1-ACZL-TR for 8 pin, MSOP Lead-Free RoHS Compliant Package
Reel size is 4,000 pieces
This product meets the halogen maximum concentration values per IEC61249-2-21
For RoHS compliance and environmental information, please visit www.smsc.com/rohs
Copyright © 2012 SMSC or its subsidiaries. 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 testing and/or modification will be fully at the risk of the customer. Copies of
this document or other SMSC literature, as well as the Terms of Sale Agreement, may be obtained by visiting SMSC’s website at http://www.smsc.com. SMSC is a registered
trademark of Standard Microsystems Corporation (“SMSC”). Product names and company names are the trademarks of their respective holders.
SMSC DISCLAIMS AND EXCLUDES ANY AND ALL WARRANTIES, INCLUDING WITHOUT LIMITATION ANY AND ALL IMPLIED WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND AGAINST INFRINGEMENT AND THE LIKE, AND ANY AND ALL WARRANTIES ARISING FROM ANY COURSE
OF DEALING OR USAGE OF TRADE. IN NO EVENT SHALL SMSC BE LIABLE FOR ANY DIRECT, INCIDENTAL, INDIRECT, SPECIAL, PUNITIVE, OR CONSEQUENTIAL
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TO HAVE FAILED OF ITS ESSENTIAL PURPOSE, AND WHETHER OR NOT SMSC HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
Revision 2.0 (08-10-12)
2
PRODUCT PREVIEW
SMSC EMC1422
1°C Temperature Sensor with Hardware Thermal Shutdown
Block Diagram
VDD
SYS_SHDN Limit
EMC1422
Switching
Current
DP1
Internal
Temperature
Register
DN1
Low Limit Registers
High Limit Registers
Internal
Temp Diode
SMBus Interface
External
Temperature
Register(s)
Digital Mux
ΔΣ ADC
Limit Comparator
Analog
Mux
Digital Mux
Conversion Rate Register
SMCLK
Configuration Register
Status Registers
Interupt Masking
SMDATA
ALERT
SYS_SHDN
GND
Pin Diagram
VDD 1
8
SMCLK
DP 2
7
SMDATA
DN 3
6
ALERT
SYS_SHDN 4
5
GND
Figure 0.1 EMC1422 Pin Diagram
SMSC EMC1422
3
PRODUCT PREVIEW
Revision 2.0 (08-10-12)
D
PIN 1 IDENTIFIER
AREA (D/2 X E1/2)
e
3
DESCRIPTION
-
DATE
RELEASED BY
-
-
SEE SPEC FRONT PAGE FOR REVISION HISTORY
Revision 2.0 (08-10-12)
REVISION HISTORY
REVISION
3
5
c
E
E1
SEE DETAIL "A"
2 8X b
TOP VIEW
4
PRODUCT PREVIEW
END VIEW
A2
A
C
SEATING PLANE
A1
ccc C
SIDE VIEW
3-D VIEW
H
C
GAUGE PLANE
0.25
SEATING PLANE
0° - 8°
NOTES:
1. ALL DIMENSIONS ARE IN MILLIMETER.
2. TOLERANCE ON THE TRUE POSITION OF THE LEADS IS ± 0.065mm MAXIMUM.
3. PACKAGE BODY DIMENSIONS "D" AND "E1" DO NOT INCLUDE MOLD PROTRUSIONS OR FLASH.
MAXIMUM MOLD PROTRUSIONS OR FLASH IS 0.15 mm (0.006 INCHES) PER END AND SIDE.
DIMENSIONS "D" AND "E1" ARE DETERMINED AT DATUM PLANE "H".
4. DIMENSION FOR FOOT LENGTH "L" IS MEASURED AT THE GAUGE PLANE 0.25mm ABOVE THE
SEATING PLANE.
5. DETAILS OF PIN 1 IDENTIFIER ARE OPTIONAL, BUT MUST BE LOCATED WITHIN THE ZONE
INDICATED.
4
L
UNLESS OTHERWISE SPECIFIED
DIMENSIONS ARE IN MILLIMETERS
AND TOLERANCES ARE:
L1
DETAIL "A"
DECIMAL
±0.1
X.X
X.XX ±0.05
X.XXX ±0.025
THIRD ANGLE PROJECTION
80 ARKAY DRIVE
HAUPPAUGE, NY 11788
USA
ANGULAR
±1°
TITLE
NAME
DIM AND TOL PER ASME Y14.5M - 1994
MATERIAL
SCALE: 3/1
FINISH
-
PRINT WITH "SCALE TO FIT"
DO NOT SCALE DRAWING
DATE
PACKAGE OUTLINE
8 PIN TSSOP, 3x3 MM BODY, 0.65 MM PITCH
DRAWN
S.K.ILIEV
7/05/04
CHECKED
S.K.ILIEV
DWG NUMBER
S.K.ILIEV
Figure 1 8 Pin MSOP / TSSOP Package
SCALE
7/07/04
REV
MO-8-TSSOP-3x3
7/05/04
APPROVED
STD COMPLIANCE
1:1
JEDEC: MO-187 / D
D
SHEET
1 OF 1
SMSC EMC1422
1°C Temperature Sensor with Hardware Thermal Shutdown
Package Outline
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