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參數資料
| 型號： | LM95214CISDX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | Quad Remote Diode and Local Temperature Sensor with SMBus Interface |
| 中文描述： | DIGITAL TEMP SENSOR-SERIAL, 11BIT(s), 2Cel, RECTANGULAR, SURFACE MOUNT |
| 封裝： | LLP-14 |
| 文件頁數： | 1/38頁 |
| 文件大小： | 448K |
| 代理商： | LM95214CISDX |
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March 2007
LM95214
Quad Remote Diode and Local Temperature Sensor with
SMBus Interface
General Description
LM95214 is an 11-bit digital temperature sensor with a 2-wire
System Management Bus (SMBus) interface that can very
accurately monitor the temperature of four remote diodes as
well as its own temperature. The four remote diodes can be
external devices such as microprocessors, graphics proces-
sors that target the ideality of a 2N3904 transistor or diode-
connected 2N3904s.
The LM95214 reports temperature in two different formats for
+127.875°C/–128°C range and 0°C/255°C range. The
LM95214 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.
Two LM95214 remote temperature channels have pro-
grammable digital filters while the other two remote channels
utilize a fault-queue to minimize unwanted TCRIT events
when temperature spikes are encountered.
For optimum flexibility and accuracy, each LM95214 channel
includes registers for offset correction. A three-level address
pin allows connection of up to 3 LM95214s to the same SM-
Bus master. The LM95214 includes power saving functions
such as: programmable conversion rate, shutdown mode,
and disabling of unused channels.
Features
■
Accurately senses die temperature of 4 remote ICs or
diode junctions and local temperature
■
Programmable digital filters and analog front end filter
■
0.125°C LSb temperature resolution
■
0.03125°C LSb remote temperature resolution with digital
filter enabled
■
+127.875°C/–128°C and 0°C/255°C remote ranges
■
Remote diode fault detection, model selection and offset
correction
■
Mask and status register support
■
3 programmable TCRIT outputs with programmable
shared hysteresis and Fault-Queue
■
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
■
Local Temperature Accuracy
■
Remote Diode Temperature Accuracy
■
Supply Voltage
■
Average Supply Current
(1Hz conversion rate)
±2.0°C (max)
±1.1°C (max)
3.0V to 3.6V
0.57 mA (typ)
Applications
■
Processor/Computer System Thermal Management
(e.g. Laptop, Desktop, Workstations, Server)
■
Electronic Test Equipment
■
Office Electronics
Connection Diagram
LLP-14
30006101
TOP VIEW
Pentium
is a trademark of Intel Corporation.
2007 National Semiconductor Corporation
300061
www.national.com
L
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LM95214CISDX/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: 準確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數字輸出 - 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 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor |
| LM95214EB/NOPB | 功能描述:溫度傳感器開發工具 LM95214EVAL BOARD RoHS:否 制造商:Texas Instruments 產品類型:Temperature Sensors and Control ICs 工具用于評估:MSP430G2553 接口類型:USB 工作電源電壓: 工作電源電流: |
| LM95221 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Dual Remote Diode Digital Temperature Sensor with SMBus Interface |
| LM95221CIMM | 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: 準確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數字輸出 - 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 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor |
| LM95221CIMM/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: 準確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數字輸出 - 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 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor |
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