« back to results for ""
Below is a cache of http://www.smsc.com/main/datasheets/1201_1202.pdf. It's a snapshot of the page taken as our search engine crawled the Web.
The web site itself may have changed. You can check the current page or check for previous versions at the Internet Archive. Yahoo! is not affiliated with the authors of this page or responsible for its content.
EMC1201/EMC1202 Single/Dual Single-Wire Temp Sensor in SOT23-5 Using SMSC BudgetBus Sensor Interface Data Sheet - SMSC
SMSC EMC1201/EMC1202
DATASHEET
Revision 1.0 (06-10-08)
Datasheet
PRODUCT FEATURES
EMC1201/EMC1202
General Description
The EMC1201 and EMC1202 are temperature sensors
that communicate with a host over a single-wire SMSC
BudgetBus Sensor Interface. The EMC1201 has an
internal temperature sensor and the EMC1202 adds one
remote diode. Packaged in a SOT23-5, the EMC1201
provides an accurate, low-cost, low-current, solution for
critical temperature monitoring in applications such as
embedded systems or computers. When used in
combination with an SMSC Super I/O host, such as a
keyboard controller, a complete thermal management
system is created. A power down mode extends battery
life in portable applications. The internal 11-bit sigma
delta temperature-to-digital converter provides superb
linearity, high accuracy and excellent noise immunity.
Features
Single-wire SMSC BudgetBus Sensor Interface
Low Power, 3.0V to 3.6V Supply
< 50uA at 1 conversion per second
< 3uA in Standby
External Temperature Sensor
Range -63.875
º
C to +191.875
º
C
0.125
º
C resolution ±
1
º
C Accuracy 60
º
C to 100
º
C
Diode Fault Reporting
Self Contained Internal Temperature Sensor
Range 0
º
C to +85
º
C
0.125
º
C resolution ±
3
º
C Accuracy 0
º
C to 85
º
C
SOT23-5 Lead-free RoHS Compliant Packages
Applications
Desktop and Notebook Computers
Thermostats
Smart batteries
Industrial/Automotive
Other Electronic Systems
Simplified Block Diagram
PART
NUMBER
INTERNAL
TEMPERATURE
MONITOR
EXTERNAL
TEMPERATURE
MONITOR
EMC1201
1
0
EMC1202
1
1
EMC1201/EMC1202
Temperature
Registers
BBUS
Interface
Local Temp
Diode
Switching
Current
Analog
Mux
DP
11-bit
delta-sigma
ADC
DN
BBUS
External
Diode for
EMC1202
Only
Single/Dual Single-Wire Temp
Sensor in SOT23-5 Using
SMSC BudgetBus
TM
Sensor
Interface ORDER NUMBERS:
EMC1201-AGZQ-TR IN 5 PIN SOT23-5 LEAD-FREE ROHS COMPLIANT PACKAGE
EMC1202-AGZQ-TR IN 5 PIN SOT23-5 LEAD-FREE ROHS COMPLIANT PACKAGE
Single/Dual Single-Wire Temp Sensor in SOT23-5 Using SMSC BudgetBus
TM
Sensor Interface
Datasheet
Revision 1.0 (06-10-08)
2
SMSC EMC1201/EMC1202
DATASHEET
80 ARKAY DRIVE, HAUPPAUGE, NY 11788 (631) 435-6000, FAX (631) 273-3123
Copyright © 2008 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 SMSCs 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
DAMAGES; OR FOR LOST DATA, PROFITS, SAVINGS OR REVENUES OF ANY KIND; REGARDLESS OF THE FORM OF ACTION, WHETHER BASED ON CONTRACT;
TORT; NEGLIGENCE OF SMSC OR OTHERS; STRICT LIABILITY; BREACH OF WARRANTY; OR OTHERWISE; WHETHER OR NOT ANY REMEDY OF BUYER IS HELD
TO HAVE FAILED OF ITS ESSENTIAL PURPOSE, AND WHETHER OR NOT SMSC HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. Single/Dual Single-Wire Temp Sensor in SOT23-5 Using SMSC BudgetBus
TM
Sensor Interface
Datasheet
SMSC EMC1201/EMC1202
3
Revision 1.0 (06-10-08)
DATASHEET
Chapter 1 Pin Configuration
Figure 1.1 EMC1201 and EMC1202 Pin Configuration
1.1
Pin Description
Table 1.1 EMC1201 and EMC1202 Pin Description
PIN
PIN NO.
DESCRIPTION
VDD
1
Supply Voltage V
DD
GND
2
Ground
BBUS
3
Serial Bus Interface to SMSC Host
GND/DP
4
Ground, or Diode 1 Positive Terminal, EMC1202 only
GND/DN
5
Ground, or Diode 1 Negative Terminal, EMC1202 only
5
4
1
2
3
VDD
GND
BBUS
GND/DN
GND/DP Single/Dual Single-Wire Temp Sensor in SOT23-5 Using SMSC BudgetBus
TM
Sensor Interface
Datasheet
Revision 1.0 (06-10-08)
4
SMSC EMC1201/EMC1202
DATASHEET
1.2
Absolute Maximum Ratings
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 EMC1201/EMC1202 Maximum Ratings
DESCRIPTION
RATING
UNIT
Supply Voltage V
DD
-0.3 to 5.0
V
Voltage on any other pin
-0.3 to V
DD
+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 SOT23-5
Power Dissipation
TBD
Thermal Resistance(at 0 air flow)
131.7
°
C/W
ESD Rating, All Pins Human Body Model
2000
V Single/Dual Single-Wire Temp Sensor in SOT23-5 Using SMSC BudgetBus
TM
Sensor Interface
Datasheet
SMSC EMC1201/EMC1202
5
Revision 1.0 (06-10-08)
DATASHEET
Chapter 2 Electrical Characteristics
Table 2.1 Electrical Characteristics
V
DD
=3.0V to 3.6V, T
A
= 0
°
C to +85
°
C, 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
545
560 A
Active mode (continuous)
I
PD
1.8
2 A
Standby mode
Internal Temperature Measurement
Accuracy
±
1
±
3
°
C
0
°
C T
A 85
°
C
External Temperature Measurement (EMC1202 only)
Temperature Accuracy
Remote Diode 60
°
C to 100
°
C
Remote Diode 0
°
C to 125
°
C
±
1
±
3
°
C
°
C
15
°
C T
A 70
°
C
0
°
C T
A 85
°
C
ADC
Resolution
0.125
°
C
Conversion Time per sensor
20
ms
Active mode (continuous)
See
Section 3.3, "Power
Modes" Single/Dual Single-Wire Temp Sensor in SOT23-5 Using SMSC BudgetBus
TM
Sensor Interface
Datasheet
Revision 1.0 (06-10-08)
6
SMSC EMC1201/EMC1202
DATASHEET
Chapter 3 Product Description
The EMC1201 and EMC1202 are SOT23 temperature sensors with a proprietary single wire SMSC
BudgetBus Sensor Interface. Temperature information is communicated to a host device via the
serial bus. All intelligence regarding the interpretation of temperature resides in the host.
Figure 3.1
shows a typical system overview:
Figure 3.1 System Overview
Thermal management consists of the host acquiring the temperature data from the EMC1201 or
EMC1202 and controlling the speed of one or more fans. Because the EMC1202 incorporates one
internal and one external temperature diode, up to two separate thermal zones can be monitored and
controlled. The