- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄358877 > LM89 (National Semiconductor Corporation) 【0.75∑C Accurate, Remote Diode and Local Digital Temperature Sensor with Two-Wire Interface PDF資料下載
參數(shù)資料
| 型號： | LM89 |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | 【0.75∑C Accurate, Remote Diode and Local Digital Temperature Sensor with Two-Wire Interface |
| 中文描述： | 【0.75ΣC準(zhǔn)確，遠(yuǎn)程二極管和本地?cái)?shù)字溫度傳感器兩線接口 |
| 文件頁數(shù)： | 1/20頁 |
| 文件大?。?/td> | 745K |
| 代理商： | LM89 |
LM89
±
0.75C Accurate, Remote Diode and Local Digital
Temperature Sensor with Two-Wire Interface
General Description
The LM89 is an 11-bit digital temperature sensor with a
2-wire System Management Bus (SMBus) serial interface.
The LM89 accurately measures its own temperature as well
as the temperature of an external device, such as processor
thermal diode or diode-connected transistor such as the
2N3904. The temperature of any ASIC can be accurately
determined using the LM89 as long as a dedicated diode
(semiconductor junction) is available on the target die. The
LM89 remote sensor accuracy of
±
0.75C is factory trimmed
for the series resistance and 1.0021 typical non-ideality fac-
tor of the Intel
Pentium
4 and the Mobile Pentium 4
Processor-M thermal diode. The LM89 has an Offset
register
to
allow
measuring
other
diodes
without
requiring
continuous
software
management.
Contact
hardware.monitor.team
@
nsc.com to obtain the latest data for
new processors.
The LM89 and the LM89-1 have the same functions but
different SMBus slave addresses. This allows for one of
each to be on the bus at the same time.
Activation of the ALERT output occurs when any tempera-
ture goes outside a preprogrammed window set by the HIGH
and LOW temperature limit registers or exceeds the T_CRIT
temperature limit. Activation of the T_CRIT_A occurs when
any temperature exceeds the T_CRIT programmed limit.
The LM89 is pin and register compatible with the LM86,
LM90, Analog Devices ADM1032 and Maxim MAX6657/8.
Features
n
Accurately senses die temperature of remote ICs or
diode junctions
n
Offset register allows sensing a variety of thermal
diodes accurately
n
On-board local temperature sensing
n
10 bit plus sign remote diode temperature data format,
0.125 C resolution
n
T_CRIT_A output useful for system shutdown
n
ALERT output supports SMBus 2.0 protocol
n
SMBus 2.0 compatible interface, supports TIMEOUT
n
8-pin MSOP and SOIC packages
Key Specifications
j
Supply Voltage
j
Supply Current
j
Local Temp Accuracy (includes quantization error)
T
A
=25C to 125C
j
Remote Diode Temp Accuracy (includes quantization
error)
T
A
=30C,T
D
=80C
T
A
=30C to 50C, T
D
=60C to 100C
T
A
=0C to 85C, T
D
=25C to 125C
3.0 V to 3.6 V
0.8 mA (typ)
±
3.0 C (max)
±
0.75 C (max)
±
1.0 C (max)
±
3.0 C (max)
Applications
n
Processor/Computer System Thermal Management
(e.g. Laptop, Desktop, Workstations, Server)
n
Electronic Test Equipment
n
Office Electronics
Simplified Block Diagram
20041501
Pentium
is a trademark of Intel Corporation.
December 2004
L
0
I
2004 National Semiconductor Corporation
DS200415
www.national.com
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM8M64 | Color STN LCD Module |
| LM8V302 | Color STN-LCD Module(Handheld PC) |
| LM8V30 | Color STN-LCD Module(Handheld PC) |
| LM8V311 | DEVlCESPECIFICATIONfoor for Passive Matrix Color LCD Module (640 X 480 dots) |
| LM8V31 | Color STN-LCD Module(Handheld PC) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM89-1CIM | 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
| LM89-1CIM/NOPB | 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
| LM89-1CIMM | 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
| LM89-1CIMM/NOPB | 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
| LM89-1CIMMX | 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。