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參數資料
| 型號： | LM34A |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | Precision Fahrenheit Temperature Sensors |
| 中文描述： | 精密華氏溫度傳感器 |
| 文件頁數： | 1/10頁 |
| 文件大小： | 242K |
| 代理商： | LM34A |
TL/H/6685
L
December 1994
LM34/LM34A/LM34C/LM34CA/LM34D
Precision Fahrenheit Temperature Sensors
General Description
The LM34 series are precision integrated-circuit tempera-
ture sensors, whose output voltage is linearly proportional to
the Fahrenheit temperature. The LM34 thus has an advan-
tage over linear temperature sensors calibrated in degrees
Kelvin, as the user is not required to subtract a large con-
stant voltage from its output to obtain convenient Fahren-
heit scaling. The LM34 does not require any external cali-
bration or trimming to provide typical accuracies of
g
(/2
§
F at
room temperature and
g
1
(/2
§
F over a full
b
50 to
a
300
§
F
temperature range. Low cost is assured by trimming and
calibration at the wafer level. The LM34’s low output imped-
ance, linear output, and precise inherent calibration make
interfacing to readout or control circuitry especially easy. It
can be used with single power supplies or with plus and
minus supplies. As it draws only 75
m
A from its supply, it has
very low self-heating, less than 0.2
§
F in still air. The LM34 is
rated to operate over a
b
50
§
to
a
300
§
F temperature
range, while the LM34C is rated for a
b
40
§
to
a
230
§
F
range (0
§
F with improved accuracy). The LM34 series is
available packaged in hermetic TO-46 transistor packages,
while the LM34C, LM34CA and LM34D are also available in
the plastic TO-92 transistor package. The LM34D is also
available in an 8-lead surface mount small outline package.
The LM34 is a complement to the LM35 (Centigrade) tem-
perature sensor.
Features
Y
Calibrated directly in degrees Fahrenheit
Y
Linear
a
10.0 mV/
§
F scale factor
Y
1.0
§
F accuracy guaranteed (at
a
77
§
F)
Y
Rated for full
b
50
§
to
a
300
§
F range
Y
Suitable for remote applications
Y
Low cost due to wafer-level trimming
Y
Operates from 5 to 30 volts
Y
Less than 90
m
A current drain
Y
Low self-heating, 0.18
§
F in still air
Y
Nonlinearity only
g
0.5
§
F typical
Y
Low-impedance output, 0.4
X
for 1 mA load
Connection Diagrams
TO-46
Metal Can Package
*
TL/H/6685–1
*
Case is connected to negative pin (GND).
Order Numbers LM34H, LM34AH,
LM34CH, LM34CAH or LM34DH
See NS Package Number H03H
TO-92
Plastic Package
TL/H/6685–2
Order Number LM34CZ,
LM34CAZ or LM34DZ
See NS Package Number Z03A
SO-8
Small Outline Molded Package
TL/H/6685–20
Top View
N.C.
e
No Connection
Order Number LM34DM
See NS Package Number M08A
Typical Applications
TL/H/6685–3
FIGURE 1. Basic Fahrenheit Temperature Sensor
(
a
5
§
to
a
300
§
F)
TL/H/6685–4
FIGURE 2. Full-Range Fahrenheit Temperature Sensor
TRI-STATE
é
is a registered trademark of National Semiconductor Corporation.
C
1995 National Semiconductor Corporation
RRD-B30M75/Printed in U. S. A.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| LM34AH | 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 |
| LM34AH/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 |
| LM34C | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Precision Fahrenheit Temperature Sensors |
| LM34CA | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Precision Fahrenheit Temperature Sensors |
| LM34CAH | 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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