LM84BIMQAX Datasheet

IC型號：
LM84BIMQAX
PDF描述：
Diode Input Digital Temperature Sensor with Two-Wire Interfa...
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NSC

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LM84 Diode Input Digital Temperature Sensor with Two-Wire Interface

July 2000

LM84

Diode Input Digital Temperature Sensor with Two-Wire

Interface

General Description

The LM84 is a remote diode temperature sensor,

Delta-Sigma analog-to-digital converter, and digital

over-temperature detector with an SMBus

鈩?/div>

interface. The

LM84 senses its own temperature as well as the tempera-

ture of a target IC with a diode junction, such as a Pentium

廬

II processor or a diode connected 2N3904. A diode junction

(semiconductor junction) is required on the target IC鈥檚 die. A

host can query the LM84 at any time to read the temperature

of this diode as well as the temperature state of the LM84

itself. A T_CRIT_A interrupt output becomes active when the

temperature is greater than a programmable comparator

limit, T_CRIT.

The host can program as well as read back the state of the

T_CRIT register. Three state logic inputs allow two pins

(ADD0, ADD1) to select up to 9 SMBus address locations for

the LM84. The sensor powers up with default thresholds of

127藲C for T_CRIT.

7 bit plus sign temperature data format

2 address select lines enable 9 LM84s to be connected

to a single bus

Key Specifications

Supply Voltage

Supply Current

Local Temperature Accuracy

Remote Diode Temperature Accuracy

3.0V - 3.6V

1 mA (max)

鹵

1.0藲C (typ)

鹵

3藲C (max)

鹵

5藲C (max)

+60藲C to +100藲C

0藲C to +125藲C

Applications

System Thermal Management

Personal Computers

Electronic Test Equipment

Office Electronics

HVAC

Features

Directly senses die temperature of remote ICs

Senses temperature of remote diodes

SMBus compatible interface, supports SMBus Timeout

Simplified Block Diagram

DS100961-1

Indicates Active Low (鈥漀OT鈥?

SMBus

鈩?/div>

is a trademark of the Intel Corporation.

Pentium

廬

II processor is a registered trademark of the Intel Corporation.

I2C

廬

is a registered trademark of the Philips Corporation.

漏 2001 National Semiconductor Corporation

DS100961

www.national.com

標(biāo)準(zhǔn)包裝
2,500
類別
集成電路 (IC)
家庭
PMIC - 熱管理
系列
-
功能
硬件監(jiān)控器
傳感器類型
內(nèi)部和外部
感應(yīng)溫度
0°C ~ 125°C，外部傳感器
精確度
±1°C 本地（最大），±5°C 遠(yuǎn)程（最大）
拓?fù)?/label>
ADC（三角積分型），比較器，寄存器庫
輸出類型
SMBus?
輸出警報
是
輸出風(fēng)扇
無
電源電壓
3 V ~ 3.6 V
工作溫度
0°C ~ 125°C
安裝類型
表面貼裝
封裝/外殼
16-LSSOP（0.154"，3.90mm 寬）
供應(yīng)商設(shè)備封裝
16-QSOP
包裝
帶卷 (TR)
其它名稱
LM84BIMQAX-NDLM84BIMQAXTR

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LM84BIMQAX Datasheet

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