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參數資料
| 型號： | ASC7521A |
| 廠商： | Electronic Theatre Controls, Inc. |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | LOW- OLTAGE 1-WIRE DIGITAL TEMPERATURE SENSOR |
| 中文描述： | 低OLTAGE 1 - Wire數字溫度傳感器 |
| 文件頁數： | 15/18頁 |
| 文件大小： | 186K |
| 代理商： | ASC7521A |
- 15 -
Andigilog, Inc. 2006
www.andigilog.com
October 2006 - 70A05011
aSC7521A
sensor is very close to the circuit board temperature and
typically between the board and ambient.
In order to measure PC board temperature in an area of
interest, such as the area around the CPU where voltage
regulator components generate significant heat, a remote
diode-connected transistor should be used. A surface-mount
SOT-23 or SOT-223 is recommended. The small size is
advantageous in minimizing response time because of its low
thermal mass, but at the same time it has low surface area
and a high thermal resistance to ambient air. A compromise
must be achieved between minimizing thermal mass and
increasing the surface area to lower the junction-to-ambient
thermal resistance.
In order to sense temperature of air-flows near board-
mounted heat sources, such as memory modules, the sensor
should be mounted above the PC board. A TO-92 packaged
transistor is recommended.
The power consumption of the aSC7521A is relatively low
and should have little self-heating effect on the local sensor
reading. At the highest measurement rate the dissipation is
less than 2mW, resulting in only a few tenths of a degree
rise.
相關PDF資料 |
PDF描述 |
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| ASC7521AM8 | LOW- OLTAGE 1-WIRE DIGITAL TEMPERATURE SENSOR |
| ASC7531A | LOW-VOLTAGE 1-WIRE DIGITAL TEMPERATURE SENSOR AND VOLTAGE MONITOR |
| ASC7531AM10 | LOW-VOLTAGE 1-WIRE DIGITAL TEMPERATURE SENSOR AND VOLTAGE MONITOR |
| ASC7531B | LOW-VOLTAGE 1-WIRE DIGITAL TEMPERATURE SENSOR AND VOLTAGE MONITOR |
| ASC7531BM10 | LOW-VOLTAGE 1-WIRE DIGITAL TEMPERATURE SENSOR AND VOLTAGE MONITOR |
相關代理商/技術參數 |
參數描述 |
|---|---|
| ASC7521AM8 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LOW- OLTAGE 1-WIRE DIGITAL TEMPERATURE SENSOR |
| ASC7531A | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LOW-VOLTAGE 1-WIRE DIGITAL TEMPERATURE SENSOR AND VOLTAGE MONITOR |
| ASC7531AM10 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LOW-VOLTAGE 1-WIRE DIGITAL TEMPERATURE SENSOR AND VOLTAGE MONITOR |
| ASC7531B | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LOW-VOLTAGE 1-WIRE DIGITAL TEMPERATURE SENSOR AND VOLTAGE MONITOR |
| ASC7531BM10 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LOW-VOLTAGE 1-WIRE DIGITAL TEMPERATURE SENSOR AND VOLTAGE MONITOR |
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