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參數(shù)資料
| 型號： | LM61 |
| 廠商： | National Semiconductor Corporation |
| 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： | 為2.7V，采用SOT - 23或TO - 92溫度傳感器 |
| 文件頁數(shù)： | 6/9頁 |
| 文件大小： | 242K |
| 代理商： | LM61 |
1.0 Mounting
(Continued)
2.0 Capacitive Loads
The LM61 handles capacitive loading well. Without any spe-
cial precautions, the LM61 can drive any capacitive load as
shown in Figure 4 Over the specified temperature range the
LM61 has a maximum output impedance of 5 k
. In an ex-
tremely noisy environment it may be necessary to add some
filtering to minimize noise pickup. It is recommended that
0.1 μF be added from +V
to GND to bypass the power sup-
ply voltage, as shown in Figure 5 In a noisy environment it
may be necessary to add a capacitor from the output to
ground. A 1 μF output capacitor with the 5 k
maximum out-
put impedance will form a 32 Hz lowpass filter. Since the
thermal time constant of the LM61 is much slower than the 5
ms time constant formed by the RC, the overall response
time of the LM61 will not be significantly affected. For much
larger capacitors this additional time lag will increase the
overall response time of the LM61.
SOT-23*
no heat sink
θ
JA
(C/W)
450
SOT-23**
small heat fin
θ
JA
(C/W)
260
180
TO-92*
no heat sink
θ
JA
(C/W)
180
90
TO-92***
small heat fin
θ
JA
(C/W)
140
70
T
J
T
A
(C)
0.26
T
J
T
A
(C)
0.13
0.09
T
J
T
A
(C)
0.09
0.05
T
J
T
A
(C)
0.07
0.03
Still air
Moving air
*Part soldered to 30 gauge wire.
**Heat sink used is
1
2
" square printed circuit board with 2 oz. foil with part attached as shown in Figure 2
***Part glued and leads soldered to 1
″
square of 1/16
″
printed circuit board with 2oz. foil or similar.
FIGURE 3. Temperature Rise of LM61 Due to
Self-Heating and Thermal Resistance (
θ
JA
)
DS012897-15
FIGURE 4. LM61 No Decoupling Required for
Capacitive Load
DS012897-16
FIGURE 5. LM61 with Filter for Noisy Environment
DS012897-17
FIGURE 6. Simplified Schematic
www.national.com
6
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相關代理商/技術參數(shù) |
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|---|---|
| LM61_05 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:2.7V, SOT-23 or TO-92 Temperature Sensor |
| LM61026 BL199 | 制造商:Belden Inc 功能描述:SHLD COMPOSITE CABLE 2TWINAX/26COND 20/16AWG, Composite Conductor Types:2 Twinax |
| LM6104 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Quad Gray Scale Current Feedback Amplifier |
| LM6104M | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| LM611 | 制造商:SEOUL 制造商全稱:Seoul Semiconductor 功能描述:RED LAMP LED |
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