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參數(shù)資料
| 型號： | LM61CIM3X |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | 2.7V, SOT-23 or TO-92 Temperature Sensor |
| 中文描述： | ANALOG TEMP SENSOR-VOLTAGE, 0.6V, 4Cel, RECTANGULAR, SURFACE MOUNT |
| 封裝： | PLASTIC, SOT-23, 3 PIN |
| 文件頁數(shù)： | 5/9頁 |
| 文件大?。?/td> | 242K |
| 代理商： | LM61CIM3X |
Typical Performance Characteristics
circuit board as shown in Figure 2 was used to generate the following thermal curves. (Continued)
The LM61 in the SOT-23 package mounted to a printed
1.0 Mounting
The LM61 can be applied easily in the same way as other
integrated-circuit temperature sensors. It can be glued or ce-
mented to a surface. The temperature that the LM61 is sens-
ing will be within about +0.2C of the surface temperature
that LM61’s leads are attached to.
This presumes that the ambient air temperature is almost the
same as the surface temperature; if the air temperature were
much higher or lower than the surface temperature, the ac-
tual temperature measured would be at an intermediate tem-
perature between the surface temperature and the air tem-
perature.
To ensure good thermal conductivity the backside of the
LM61 die is directly attached to the GND pin. The lands and
traces to the LM61 will, of course, be part of the printed cir-
cuit board, which is the object whose temperature is being
measured.
Alternatively, the LM61 can be mounted inside a sealed-end
metal tube, and can then be dipped into a bath or screwed
into a threaded hole in a tank. As with any IC, the LM61 and
accompanying wiring and circuits must be kept insulated and
dry, to avoid leakage and corrosion. This is especially true if
the circuit may operate at cold temperatures where conden-
sation can occur. Printed-circuit coatings and varnishes such
as Humiseal and epoxy paints or dips are often used to en-
sure that moisture cannot corrode the LM61 or its connec-
tions.
The thermal resistance junction to ambient (
θ
) is the pa-
rameter used to calculate the rise of a device junction tem-
perature due to its power dissipation. For the LM61 the
equation used to calculate the rise in the die temperature is
as follows:
T
J
= T
A
+
θ
JA
[(+V
S
I
Q
) + (+V
S
V
O
) I
L
]
where I
is the quiescent current and I
is the load current on
the output. Since the LM61’s junction temperature is the ac-
tual temperature being measured care should be taken to
minimize the load current that the LM61 is required to drive.
The table shown in Figure 3 summarizes the rise in die tem-
perature of the LM61 without any loading with a 3.3V supply,
and the thermal resistance for different conditions.
Supply Voltage
vs Supply Current
DS012897-12
Start-Up Response
DS012897-22
DS012897-14
FIGURE 2. Printed Circuit Board Used
for Heat Sink to Generate All Curves.
1
2
" Square Printed Circuit Board
with 2 oz. Copper Foil or Similar.
www.national.com
5
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LM61CIM3X/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(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 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor |
| LM61CIZ | 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(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 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor |
| LM61CIZ/LFT2 | 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(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 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor |
| LM61CIZ/NOPB | 功能描述:板上安裝溫度傳感器 Ana Output Temp Sens 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(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 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor |
| LM61CIZ/T4 | 制造商:Texas Instruments 功能描述:Temp Sensor Analog 3-Pin TO-92 T/R |
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