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参数资料
| 型号： | MLX90247 |
| 厂商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Discrete Infrared Thermopile Detectors |
| 中文描述： | 离散红外热电堆探测器 |
| 文件页数： | 2/11页 |
| 文件大小： | 168K |
| 代理商： | MLX90247 |
3901090247
Rev. 002
Page 2-2 of 11
Data Sheet
Aug/02
40uV/K
60kOhm
+
26kOhm
Thermopile
1
4
2
3
Socket
PTC
OutIr+
OutIr-
Rsens
VSS
MLX90247DSA
2. Description
The MLX90247family sensors are thermopile
sensors IC which detects very small amounts of
heat radiation. The sensors consist of a
membrane with a thermopile on top of it.
The hot junctions of the thermopile are
positioned near the center of the membrane and
the cold junctions above the bulk silicon edge.
Due to the low thermal conductivity of the
membrane, absorbed heat will cause the
temperature to increase more at the center of
the membrane than at the edge above the bulk.
This temperature difference is converted to an
electric potential by the thermo-electric effect in
the thermopile junctions. No supply voltage is
needed.
The MLX90247DSG sensor IC is integrated
together with a PTC thermistor. The thermopile
sensor is grounded at the middle point, so that
the output common-mode voltage is at ground
potential. Using grounded thermopile sensor
gives improved EMC susceptibility in some
applications.
The MLX90247DSE sensor IC is packaged
together with a 100k NTC chip thermistor. The
sensor and thermistor can be used independent
of each other if desired, as the thermopile
potential is floating. This type of thermistor has
better sensitivity than the PTC types, but must
be used in smaller ambient ranges. Typical
applications are ear thermometers or other
medical equipment.
The MLX90247DSA sensor IC is integrated
together with a PTC thermistor. The sensor and
thermistor can be used independent of each
other if desired, as the thermopile potential is
floating.
相关PDF资料 |
PDF描述 |
|---|---|
| MLX90247DSA | Discrete Infrared Thermopile Detectors |
| MLX90247DSE | Discrete Infrared Thermopile Detectors |
| MLX90247DSG | Discrete Infrared Thermopile Detectors |
| MLX90255BA | Linear Optical Array |
| MLX90255K | Linear Optical Array |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MLX90247_04 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Discrete Infrared Thermopile Detectors |
| MLX90247_07 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Discrete Infrared Thermopile Detectors |
| MLX90247B | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Thermopile w/On-Chip Thermistor |
| MLX90247C | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Thermopile w/NTC Thermistor |
| MLX90247DSA | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Discrete Infrared Thermopile Detectors |
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