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LM95241CIMM-1/NOPB PDF预览

LM95241CIMM-1/NOPB

更新时间： 2024-11-06 01:03:55
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德州仪器 - TI /
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30页 1114K
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Dual Remote Diode Temperature Sensor with SMBus Interface and TruTherm™ Technology (65nm/90nm)

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LM95241CIMM-1/NOPB 数据手册

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LM95241  
www.ti.com  
SNIS143E –AUGUST 2006–REVISED MARCH 2013  
LM95241 Dual Remote Diode Temperature Sensor with SMBus Interface and TruTherm™  
Technology (65nm/90nm)  
Check for Samples: LM95241  
1
FEATURES  
KEY SPECIFICATIONS  
2
•
Accurately Senses Die Temperature of Remote  
ICs or Diode Junctions  
•
Remote Diode Temperature Accuracy  
–
TA = 20°C to 40°C, TD = 45°C to 85°C ±1.25  
°C (Max)  
•
•
Uses TruTherm Technology for Precision  
“Thermal Diode” Temperature Measurement  
–
TA = 0°C to 85°C, TD = 25°C to 140°C ±2.5 °C  
(Max)  
Thermal Diode Input Stage with Analog  
Filtering  
•
Local Temperature Accuracy  
TA = 0°C to 85°C ±3.0 °C (Max)  
•
•
Thermal Diode Digital Filtering  
–
Intel Processor on 65nm or 90nm Process or  
2N3904 Non-Ideality Selection  
•
•
Supply Voltage 3.0 V to 3.6 V  
Average Supply Current 471 μA (Typ)  
•
•
•
Remote Diode Fault Detection  
On-board Local Temperature Sensing  
APPLICATIONS  
Remote Temperature Readings Without Digital  
Filtering:  
•
Processor/Computer System Thermal  
Management  
–
–
0.125 °C LSb  
–
(e.g. Laptop, Desktop, Workstations,  
Server)  
10-bits Plus Sign or 11-bits Programmable  
Resolution  
•
•
Electronic Test Equipment  
Office Electronics  
–
11-bits Resolves Temperatures Above  
127 °C  
DESCRIPTION  
•
•
Remote Temperature Readings with Digital  
Filtering:  
The LM95241 is a precision dual remote diode  
temperature sensor (RDTS) that uses TI's TruTherm  
technology. The 2-wire serial interface of the  
LM95241 is compatible with SMBus 2.0. The  
LM95241 can sense three temperature zones, it can  
measure the temperature of its own die as well as  
two diode connected transistors. The LM95241  
includes digital filtering and an advanced input stage  
that includes analog filtering and TruTherm  
technology that reduces processor-to-processor non-  
ideality spread. The diode connected transistors can  
be a “thermal diode” as found in Intel and AMD  
processors or can simply be a diode connected  
MMBT3904 transistor. TruTherm technology allows  
accurate measurement of “thermal diodes” found on  
small geometry processes such as 90nm and 65nm.  
The LM95241 supports user selectable thermal diode  
non-ideality of either Intel processor on 90nm or  
65nm process or 2N3904.  
–
–
0.03125 °C LSb with Filtering  
12-bits Plus Sign or 13-bits Programmable  
Resolution  
–
13-bits Resolves Temperatures Above  
127 °C  
Local Temperature Readings:  
–
–
0.25 °C  
9-bits Plus Sign  
•
•
Status Register Support  
Programmable Conversion Rate Allows User  
Optimization of Power Consumption  
•
•
Shutdown Mode One-shot Conversion Control  
SMBus 2.0 Compatible Interface, Supports  
TIMEOUT  
•
8-pin VSSOP Package  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
2
All trademarks are the property of their respective owners.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2006–2013, Texas Instruments Incorporated  
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