Datasheet > LM95233_07

LM95233_07

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
36页	758K
描述
Dual Remote Diode and Local Temperature Sensor with SMBus Interface and TruTherm Technology

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LM95233_07 数据手册

June 2007

LM95233

Dual Remote Diode and Local Temperature Sensor with

SMBus Interface and TruTherm™ Technology

0.125°C LSb temperature resolution

■

General Description

0.03125°C LSb remote temperature resolution with digital

LM95233 is an 11-bit digital temperature sensor with a 2-wire

filter enabled

System Management Bus (SMBus) interface that can monitor

the temperature of two remote diodes as well as its own tem-

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

■

Programmable digital filters and analog front end filter

perature. The LM95233 can be used to very accurately mon-

itor the temperature of up to two external devices such as

microprocessors, graphics processors or diode-connected

2N3904s. The LM95233's TruTherm™ BJT beta compensa-

tion technology allows sensing of 90nm or 65nm process

thermal diodes accurately.

Remote diode fault detection, model selection and offset

correction

Mask and status register support

■

3 programmable TCRIT outputs with programmable

shared hysteresis

The LM95233 reports temperature in two different formats for

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

LM95233 TCRIT1, TCRIT2 and TCRIT3 outputs are triggered

when any unmasked channel exceeds its corresponding pro-

grammable limit and can be used to shutdown the system, to

turn on the system fans or as a microcontroller interrupt func-

tion. The current status of the TCRIT1, TCRIT2 and TCRIT3

pins can be read back from the status registers. Mask regis-

ters are available for further control of the TCRIT outputs.

LM95233's remote temperature channels have pro-

grammable digital filters to minimize unwanted TCRIT events

when temperature spikes are encountered.

Programmable conversion rate and shutdown mode one-

shot conversion control

SMBus 2.0 compatible interface, supports TIMEOUT

Three-level address pin

■

14-pin LLP package

Key Specifications

±2.0 °C (max)

±0.875 °C (max)

3.0 V to 3.6 V

■ꢀLocal Temperature Accuracy

■ꢀRemote Diode Temperature Accuracy

■ꢀSupply Voltage

■ꢀAverage Supply Current (1Hz

conversion rate)

For optimum flexibility and accuracy each LM95233 channel

includes, registers for sub-micron process or 2N3904 diode

model selection as well as offset correction. A three level ad-

dress pin allows connection of up to 3 LM95233s to the same

SMBus master. The LM95233 includes power saving func-

tions such as: programmable conversion rate, shutdown

mode, and turn off of unused channels.

0.57 mA (typ)

Applications

Processor/Computer System Thermal Management

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

■

Electronic Test Equipment

Office Electronics

■

Features

Accurately senses die temperature of 2 remote ICs or

■

diode junctions and local temperature

TruTherm BJT beta compensation technology accurately

senses sub-micron process thermal diodes

■

Connection Diagram

LLP-14

20206301

TOP VIEW

TruTherm™ is a trademark of National Semiconductor Corporation.

Intel™ is a trademark of Intel Corporation.

Pentium™ is a trademark of Intel Corporation.

202063

www.national.com

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LM95234_07	NSC	获取价格	Quad Remote Diode and Local Temperature Sensor with SMBus Interface and TruTherm Technolog

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