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LM95245CIMMX/NOPB PDF预览

LM95245CIMMX/NOPB

更新时间: 2024-09-16 11:12:19
品牌 Logo 应用领域
德州仪器 - TI 温度传感输出元件二极管传感器换能器温度传感器
页数 文件大小 规格书
40页 845K
描述
具有 SMBus 接口、采用 β 补偿技术、适用于 45nm 处理器二极管的 ±0.75°C 远程和本地温度传感器 | DGK | 8 | -40 to 125

LM95245CIMMX/NOPB 数据手册

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LM95245  
www.ti.com  
SNIS148G OCTOBER 2007REVISED MARCH 2013  
Precision Remote Diode Digital Temperature Sensor with TruTherm® BJT Beta  
Compensation Technology for 45nm Process  
Check for Samples: LM95245  
1
FEATURES  
DESCRIPTION  
The LM95245 is an 11-bit digital temperature sensor  
with a 2-wire System Management Bus (SMBus)  
interface and TruTherm technology that can monitor  
the temperature of a remote diode as well as its own  
temperature. The LM95245 can be used to very  
accurately monitor the temperature of external  
devices such as microprocessors. TruTherm  
technology allows the LM95245 to precisely monitor  
thermal diodes found in 90 nm and smaller geometry  
processes. The LM95245 is specifically targeted for  
Intel processors on 45nm process. LM95245 reports  
temperature in two different formats for +127.875°C/-  
128°C range and 0°C/255°C range. The LM95245  
T_CRIT and OS outputs are asserted when either  
unmasked channel exceeds its programmed 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 T_CRIT and OS pins can be  
read back from the status registers via the SMBus  
interface. All limits have a shared programmable  
hysteresis register.  
2
Remote and Local Temperature Channels  
Targeted for Intel 45nm Processor Diodes  
Two Formats: 128°C to +127.875°C and 0°C to  
255.875°C  
Digital Filter for Remote Channel  
Programmable TCRIT and OS Thresholds  
Programmable Shared Hysteresis Register  
Diode Fault Detection  
Mask, Offset, and Status Registers  
SMBus 2.0 Compatible Interface, Supports  
TIMEOUT  
Programmable Conversion Rate for Best  
Power Consumption  
Three-Level Address Pin  
Standby Mode One-Shot Conversion Control  
Pin-for-Pin Compatible With the LM95235 and  
LM86, LM89, LM99  
The remote temperature channel of the LM95245 has  
8-Pin VSSOP and SOIC Packages  
a
programmable digital filter. The LM95245 is  
targeted for a typical Intel® processor on a 45 nm, 65  
nm or 90nm process, and has an offset register for  
maximum flexibility and best accuracy.  
APPLICATIONS  
Processor/Computer System Thermal  
Management (For Example, Laptops,  
Desktops, Workstations, Servers)  
The LM95245 has a three-level address pin to  
connect up to 3 devices to the same SMBus master,  
that is shared with the OS output. The LM95245 has  
a programmable conversion rate register and a  
standby mode to save power. One conversion can be  
triggered in standby mode by writing to the one-shot  
register.  
Electronic Test Equipment  
Office Electronics  
KEY SPECIFICATIONS  
Supply Voltage 3.0 to 3.6 V  
Supply Current, Conv. Rate = 1 Hz 350 µA (typ)  
Remote Diode Temperature Accuracy  
TA = 25°C to 85°C; TD = 50°C to 105°C, ±0.75  
°C (max)  
TA = 25°C to 85°C; TD = 40°C to 125°C, ±1.5  
°C (max)  
Local Temperature Accuracy  
TA = 25°C to 100°C, ±2.0 °C (max)  
Conversion Rate, Both Channels 16 to 0.4 Hz  
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 © 2007–2013, Texas Instruments Incorporated  

LM95245CIMMX/NOPB 替代型号

型号 品牌 替代类型 描述 数据表
LM95245CIMMX-1/NOPB TI

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具有 SMBus 接口、采用 β 补偿技术、适用于 45nm 处理器二极管的 ±0.75°
LM95245CIMM-1/NOPB TI

类似代替

具有 SMBus 接口、采用 β 补偿技术、适用于 45nm 处理器二极管的 ±0.75°
LM95245CIMM/NOPB TI

功能相似

具有 SMBus 接口、采用 β 补偿技术、适用于 45nm 处理器二极管的 ±0.75°

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