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LM95213_15

更新时间： 2024-11-25 01:21:51
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2-Diode Input and Local Digital Temperature Sensor with Two-Wire Interface and TCRIT Outputs

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LM95213  
www.ti.com  
SNIS147A –MARCH 2007–REVISED MARCH 2013  
2-Diode Input and Local Digital Temperature Sensor with Two-Wire Interface and TCRIT  
Outputs  
Check for Samples: LM95213  
1
FEATURES  
DESCRIPTION  
The LM95213 is an 11-bit digital temperature sensor  
with a 2-wire System Management Bus (SMBus)  
interface that can monitor the temperature of two  
remote diodes as well as its own temperature. The  
LM95213 can be used to very accurately monitor the  
temperature of up to two external devices such as  
microprocessors, graphics processors or diode-  
connected 2N3904s.  
23  
•
Accurately Senses Die Temperature of 2  
Remote ICs or Diode Junctions and Local  
Temperature  
•
•
0.125°C LSb Temperature Resolution  
0.03125°C LSb Remote Temperature  
Resolution with Digital Filter Enabled  
•
•
•
+127.875°C/–128°C and 0°C/255°C Remote  
Ranges  
The LM95213 reports temperature in two different  
formats for +127.875°C/–128°C range and 0°C/255°C  
range. The LM95213 TCRIT1, TCRIT2 and TCRIT3  
outputs are triggered when any unmasked channel  
exceeds its corresponding programmable limit and  
can be used to shutdown the system, to turn on the  
system fans or as a microcontroller interrupt function.  
The current status of the TCRIT1, TCRIT2 and  
TCRIT3 pins can be read back from the status  
registers. Mask registers are available for further  
control of the TCRIT outputs.  
Programmable Digital Filters and Analog Front  
End Filter  
Remote Diode Fault Detection, Model  
Selection and Offset Correction  
•
•
Mask and Status Register Support  
3 Programmable TCRIT Outputs with  
Programmable Shared Hysteresis  
•
•
Programmable Conversion Rate and Shutdown  
Mode One-Shot Conversion Control  
The LM95213's remote temperature channels have  
programmable digital filters to minimize unwanted  
TCRIT events when temperature spikes are  
encountered.  
SMBus 2.0 Compatible Interface, Supports  
TIMEOUT  
•
•
Three-Level Address Pin  
14-Pin WSON Package  
For optimum flexibility and accuracy each LM95213  
channel includes offset correction registers for  
targeting diodes other than the 2N3904. A three level  
address pin allows connection of up to 3 LM95213s  
to the same SMBus master. The LM95213 includes  
power saving functions such as: programmable  
conversion rate, shutdown mode, and turn off of  
unused channels.  
APPLICATIONS  
•
Processor/Computer System Thermal  
Management (e.g. Laptop, Desktop,  
Workstations, Server)  
•
•
Electronic Test Equipment  
Office Electronics  
Table 1. Key Specifications  
VALUE  
±2.0  
UNIT  
°C (max)  
°C (max)  
V
Local Temperature Accuracy  
Remote Diode Temperature Accuracy  
Supply Voltage  
±1.1  
3.0 to 3.6  
0.57  
Average Supply Current (1Hz conversion rate)  
mA (typ)  
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.  
TruTherm is a trademark of Texas Instruments.  
2
3
All other 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 © 2007–2013, Texas Instruments Incorporated  
1234567...43

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