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參數(shù)資料
| 型號(hào)： | LM95231 |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | TruTherm Precision Dual Remote Diode Temperature Sensor with SMBus Interface |
| 中文描述： | TruTherm精密雙遠(yuǎn)程二極管溫度傳感器，帶有SMBus接口 |
| 文件頁(yè)數(shù)： | 1/4頁(yè) |
| 文件大?。?/td> | 464K |
| 代理商： | LM95231 |
LM95231
TruTherm
Precision Dual Remote Diode Temperature
Sensor with SMBus Interface
General Description
The LM95231 is a precision dual remote diode temperature
sensor (RDTS) that uses National’s TruTherm technology.
The 2-wire serial interface of the LM95231 is compatible with
SMBus 2.0. The LM95231 can sense three temperature
zones, it can measure the temperature of its own die as well
as two diode connected transistors. The LM95231 includes
digital filtering and an advanced input stage that includes
analog filtering and TruTherm technology that reduces non-
ideality processor to processor spread. The diode connected
transistors can be a “thermal diode” as found in Intel and
AMD processors or can simply be a diode connected
MMBT3904 transistor. TruTherm technology allows accurate
measurement of “thermal diodes” found on small geometry
processes, 90nm and below. The LM95231 supports user
selectable thermal diode non-ideality of either a Pentium
4
processor in the 90nm process or 2N3904.
The LM95231 resolution format for remote temperature
readings can be programmed to be 11-bits signed or un-
signed with the digital filtering disabled. When the filtering is
enabled the resolution increases to 13-bits signed or un-
signed. In the unsigned mode the LM95231 remote diode
readings can resolve temperatures above 127C. Local tem-
perature readings have a resolution of 9-bits plus sign.
Features
n
Accurately senses die temperature of remote ICs or
diode junctions
n
Uses TruTherm technology for precision “thermal diode”
temperature measurement
n
Thermal diode input stage with analog filtering
n
Thermal diode digital filtering
n
Pentium 4 90nm or 2N3904 non-ideality selection
n
Remote diode fault detection
n
On-board local temperature sensing
n
Remote temperature readings without digital filtering:
— 0.125 C LSb
— 10-bits plus sign or 11-bits programmable resolution
— 11-bits resolves temperatures above 127 C
n
Remote temperature readings with digital filtering:
— 0.03125 C LSb with filtering
— 12-bits plus sign or 13-bits programmable resolution
— 13-bits resolves temperatures above 127 C
n
Local temperature readings:
— 0.25 C
— 9-bits plus sign
n
Status register support
n
Programmable conversion rate allows user optimization
of power consumption
n
Shutdown mode one-shot conversion control
n
SMBus 2.0 compatible interface, supports TIMEOUT
n
8-pin MSOP package
Key Specifications
j
Remote Diode Temperature Accuracy
T
A
=30C to 50C, T
D
=45C to 85C
T
A
=0C to 85C, T
D
=25C to 140C
j
Local Temperature Accuracy
±
0.75 C (max)
±
2.0 C (max)
T
A
=0C to 85C
±
3.0 C (max)
3.0 V to 3.6 V
2 mA (typ)
j
Supply Voltage
j
Supply Current
Applications
n
Processor/Computer System Thermal Management
(e.g. Laptop, Desktop, Workstations, Server)
n
Electronic Test Equipment
n
Office Electronics
Connection Diagram
MSOP-8
20120202
TOP VIEW
TruTherm
is a trademark of National Semiconductor Corporation.
I2C
is a registered trademark of Phillips Corporation.
Pentium
is a trademark of Intel Corporation.
ADVANCE INFORMATION
February 2005
L
2005 National Semiconductor Corporation
DS201202
www.national.com
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM95231_06 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Precision Dual Remote Diode Temperature Sensor with SMBus Interface and TruTherm Technology |
| LM95231BIMM | 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 |
| LM95231BIMM/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 |
| LM95231BIMM-1 | 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 |
| LM95231BIMM-1/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 |
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