參數(shù)資料
型號(hào)： LM95214CISD
廠(chǎng)商： NATIONAL SEMICONDUCTOR CORP
元件分類(lèi)： 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(yè)數(shù)： 9/38頁(yè)
文件大?。?/td> 448K
代理商： LM95214CISD
Typical Performance Characteristics
Conversion Rate Effect on
Average Power Supply Current
30006106
Thermal Diode Capacitor or PCB
Leakage Current Effect on
Remote Diode Temperature Reading
30006123
Remote Temperature Reading Sensitivity to
Thermal Diode Filter Capacitance
30006107
1.0 Functional Description
LM95214 is an 11-bit digital temperature sensor with a 2-wire
System Management Bus (SMBus) interface that can monitor
the temperature of four remote diodes as well as its own tem-
perature. The LM95214 can be used to very accurately mon-
itor the temperature of up to four external devices such as
microprocessors, graphics processors or diode-connected
2N3904 transistor. Any device whose thermal diode can be
modeled by an MMBT3904 transistor will work well with the
LM95214.
The LM95214 reports temperature in two different formats for
+127.875°C/–128°C range and 0°C/255°C range. The
LM95214 has a Sigma-Delta ADC (Analog-to-Digital Con-
verter) core which provides the first level of noise imunity. For
improved performance in a noisy environment the LM95214
includes programmable digital filters for Remote Diode 1 and
2 temperature readings. When the digital filters are invoked
the resolution for Remote Diode 1 and 2 readings increases
to 0.03125°C. For maximum flexibility and best accuracy the
LM95214 includes offset registers that allow calibration of
other diode types.
Diode fault detection circuitry in the LM95214 can detect the
absence or fault state of a remote diode: whether D+ is short-
ed to V
DD
, D- or ground, or whether D+ is floating.
The LM95214 TCRIT1, TCRIT2 and TCRIT3 active low out-
puts are triggered when any unmasked channel exceeds its
corresponding programmable limit and can be used to shut-
down the system, to turn on the system fans or as a micro-
controller interrupt function. The current status of the
TCRIT1, TCRIT2 and TCRIT3 pins can be read back from the
status registers via the SMBus interface. Two of the remote
channels have two separate limits each that control the
TCRIT1 and TCRIT2 pins. The remaining two channels and
the local channel each have one limit to control both the
TCRIT1 and TCRIT2 pins. The TCRIT3 pin shares the limits
of the TCRIT2 pin but allows for different masking options. All
limits have a shared programmable hysteresis register.
Remote Diode 1 and 2 temperature channels have pro-
grammable digital filters while the other two remote temper-
ature channels utilize a fault-queue in order to avoid false
triggering the TCRIT pins.
LM95214 has a three-level address pin to connect up to 3
devices to the same SMBus master. LM95214 also has pro-
9
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM95214CISD/NOPB 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類(lèi)型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線(xiàn)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
LM95214CISDX 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類(lèi)型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線(xiàn)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
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(lèi)型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線(xiàn)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
LM95214EB/NOPB 功能描述:溫度傳感器開(kāi)發(fā)工具 LM95214EVAL BOARD RoHS:否 制造商:Texas Instruments 產(chǎn)品類(lèi)型:Temperature Sensors and Control ICs 工具用于評(píng)估:MSP430G2553 接口類(lèi)型:USB 工作電源電壓: 工作電源電流:
LM95221 制造商:NSC 制造商全稱(chēng):National Semiconductor 功能描述:Dual Remote Diode Digital Temperature Sensor with SMBus Interface
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