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參數(shù)資料
| 型號： | LM94021 |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | Multi-Gain Analog Temperature Sensor |
| 中文描述： | 多增益模擬溫度傳感器 |
| 文件頁數(shù)： | 1/13頁 |
| 文件大小： | 683K |
| 代理商： | LM94021 |
LM94021
Multi-Gain Analog Temperature Sensor
General Description
The
LM94021
is
a
precision
analog
integrated-circuit temperature sensor that operates at a sup-
ply voltage as low as 1.5V. While operating over the wide
temperature range of 50C to +150C, the LM94021 deliv-
ers an output voltage that is inversely porportional to mea-
sured temperature. The LM94021’s low supply current
makes it ideal for battery-powered systems as well as gen-
eral temperature sensing applications.
Two logic inputs, Gain Select 1 (GS1) and Gain Select 0
(GS0), select the gain of the temperature-to-voltage output
transfer function. Four slopes are selectable: 5.5 mV/C,
8.2 mV/C, 10.9 mV/C, and 13.6 mV/C. In the lowest
gain configuration (GS1 and GS0 both tied low), the
LM94021 can operate with a 1.5V supply while measuring
temperature over the full 50C to +150C operating range.
Tying both inputs high causes the transfer function to have
the largest gain of 13.6 mV/C for maximum temperature
sensitivity. The gain-select inputs can be tied directly to V
DD
or Ground without any pull-up or pull-down resistors, reduc-
ing component count and board area. These inputs can also
be driven by logic signals allowing the system to optimize the
gain during operation or system diagnostics.
output
CMOS
Applications
n
Cell phones
n
Wireless Transceivers
n
Battery Management
n
Automotive
n
Disk Drives
n
Games
n
Appliances
Features
n
Low 1.5V operation
n
Four selectable gains
n
Very accurate over wide temperature range of 50C to
+150C
n
Low quiescent current
n
Output is short-circuit protected
n
Extremely small SC70 package
n
Footprint compatible with the industry-standard LM20
temperature sensor
Key Specifications
j
Supply Voltage
j
Supply Current
j
Temperature
Accuracy
1.5V to 5.5V
9 μA (typ)
±
1.5C
±
1.8C
±
2.1C
±
2.7C
20C to 40C
-50C to 70C
-50C to 90C
-50C to 150C
j
Operating
Temperature
50C to 150C
Connection Diagram
SC70-5
20108601
Top View
See NS Package Number MAA05A
Typical Transfer Characteristic
Output Voltage vs Temperature
20108624
February 2005
L
2005 National Semiconductor Corporation
DS201086
www.national.com
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM94021BIMG | 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 |
| LM94021BIMG/NOPB | 功能描述:板上安裝溫度傳感器 Lo Volt Temp Sensor W/ Selectable Gain 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 |
| LM94021BIMGX | 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 |
| LM94021BIMGX/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 |
| LM94021EVAL | 功能描述:溫度傳感器開發(fā)工具 LM94021 EVAL BOARD RoHS:否 制造商:Texas Instruments 產(chǎn)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: |
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