LM95234

更新时间： 2024-09-14 03:51:39

品牌	Logo	应用领域
美国国家半导体 - NSC		二极管传感器温度传感器
页数	文件大小	规格书
5页	508K
描述
Quad Remote Diode and Local Temperature Sensor with SMBus Interface and TruTherm⑩ Technology

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LM95234 数据手册

ADVANCE INFORMATION

August 2006

LM95234

Quad Remote Diode and Local Temperature Sensor with

™

SMBus Interface and TruTherm Technology

n TruTherm technology accurately senses sub-micron

process thermal diodes

General Description

LM95234 is an 11-bit digital temperature sensor with a 2-wire

System Management Bus (SMBus) interface that can moni-

tor the temperature of four remote diodes as well as its own

temperature. The LM95234 can be used to very accurately

monitor the temperature of up to four external devices such

as microprocessors, graphics processors or diode-

connected 2N3904s. The LM95234’s TruTherm technology

allows sensing of 90nm or 65nm process thermal diodes

accurately.

n Programmable digital filters and analog front end filter

n 0.125˚C LSb temperature resolution

n 0.03125˚C LSb remote temperature resolution with

digital filter enabled

+127.875˚C/–128˚C and 0˚C/255˚C remote ranges

n Remote diode fault detection, model selection and offset

correction

n Mask and status register support

n 3 programmable TCRIT outputs with programmable

shared hysteresis and Fault-Queue

n Programmable conversion rate and shutdown mode

one-shot conversion control

n SMBus 2.0 compatible interface, supports TIMEOUT

n Three-level address pin

n 14-pin LLP package

The LM95234 reports temperature in two different formats

for +127.875˚C/–128˚C range and 0˚C/255˚C range. The

LM95234 TCRIT1, TCRIT2 and TCRIT3 outputs are trig-

gered when any unmasked channel exceeds its correspond-

ing 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.

Key Specifications

Two LM95234 remote temperature channels have program-

mable digital filters while the other two remote channels

utilize a fault-queue to minimize unwanted TCRIT events

when temperature spikes are encountered.

Local Temperature Accuracy

2.0 ˚C (max)

0.75 ˚C (max)

Remote Diode Temperature

Accuracy

Supply Voltage

3.0 V to 3.6 V

0.5 mA (typ)

For optimum flexibility and accuracy, each LM95234 channel

includes registers for sub-micron process or 2N3904 diode

model selection as well as offset correction. A three level

address pin allows connection of up to 3 LM95234s to the

same SMBus master. The LM95234 includes power saving

functions such as: programmable conversion rate, shutdown

mode, and turn off of unused channels.

Average Supply Current (1Hz

conversion rate)

Applications

n Processor/Computer System Thermal Management

(e.g. Laptop, Desktop, Workstations, Server)

n Electronic Test Equipment

Features

n Office Electronics

n Accurately senses die temperature of 4 remote ICs or

diode junctions and local temperature

Connection Diagram

LLP-14

20106301

TOP VIEW

™

TruTherm is a trademark of National Semiconductor Corporation.

DS201063

www.national.com

12 3 4 5

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与LM95234相关器件

型号	品牌	获取价格	描述	数据表
LM95234_07	NSC	获取价格	Quad Remote Diode and Local Temperature Sensor with SMBus Interface and TruTherm Technolog
LM95234_15	TI	获取价格	Quad Remote Diode and Local Temperature Senso
LM95234CISD	NSC	获取价格	Quad Remote Diode and Local Temperature Senso
LM95234CISD/NOPB	NSC	获取价格	Switch/Digital Output Temperature Sensor, DIGITAL TEMP SENSOR-SERIAL, 11BIT(s), 2Cel, SQUA
LM95234CISD/NOPB	TI	获取价格	Quad Remote Diode and Local Temperature Senso
LM95234CISDX	NSC	获取价格	Quad Remote Diode and Local Temperature Senso
LM95234CISDX/NOPB	TI	获取价格	Quad Remote Diode and Local Temperature Senso
LM95235	NSC	获取价格	Precision Remote Diode Temperature Sensor with SMBus Interface and TruTherm Technology
LM95235	TI	获取价格	Precision Remote Diode Temperature Sensor wit
LM95235_08	NSC	获取价格	Precision Remote Diode Temperature Sensor with SMBus Interface and TruTherm? Technology

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