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參數(shù)資料
| 型號： | MLX90215EVA-AAA-106-BU |
| 廠商： | Melexis Technologies NV |
| 文件頁數(shù)： | 32/46頁 |
| 文件大?。?/td> | 498K |
| 描述： | IC SENSOR PROG LINEAR HALL 4SIP |
| 產(chǎn)品目錄繪圖： | MLX90215, PTC-04 Series Side |
| 標準包裝： | 1,000 |
| 傳感范圍： | 無限制 |
| 類型： | 線性 - 可編程 |
| 電源電壓： | 4.5 V ~ 5.5 V |
| 電流 - 電源： | 6.5mA |
| 電流 - 輸出（最大）： | 2mA |
| 輸出類型： | 模擬，比率 |
| 特點： | 穩(wěn)壓電壓 |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 4-SIP |
| 供應(yīng)商設(shè)備封裝： | 4-SIP |
| 包裝： | 散裝 |
| 產(chǎn)品目錄頁面： | 2792 (CN2011-ZH PDF) |
| 其它名稱： | 90215DB106 MLX90215EVA MLX90215EVA-ND |
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Section 3 - Applications
3-18
Programmable Isolated Current Sensor
Hall Effect Sensors can be used in conjunction with an electromagnet to make a very efficient, isolated
current-sensing device. This can be used to protect components from damage such as overheating.
The only components needed, as in Figure 13, are a Hall IC and a slotted ferrite toroid core driving an
indicator, relay or a logic-level fault signal. The ideal Hall IC in this application is a programmable linear
device, which would allow accurate calibration of the sensor and also versatility. For example, the dia-
gram below shows a toroid with 4 turns of wire. If a current of 10A was applied to the coil, the field at
the sensor would be about 6mT. The Hall IC can be programmed to give the desired response to this mag-
netic range. If the desired voltage swing is 0.5V (or 500mV) and the magnetic swing is 6mT, then the
device can be programmed to
83mV/mT to give the correct
response.
By varying the number of
windings and the programming
codes, rages as small as 100mA
and as large as 500A can be
achieved.
If used with a linear Hall-Effect
sensor, the output voltage will
be proportional to the current
flowing through the windings
on the toroid. This Voltage can
be used to indicate current
level, or trigger a shut-down
circuit.
Current Indicator/Limiter
If only a current indicator or limiter is needed, a simple circuit can be built with a Hall switch, and requires
no programming. In Figure 13, each complete turn of coil around the core, with a current of 1 Amp flow -
ing through it, will produce a flux density of approximately .6 mT upon the Hall Effect Switch. By adjust-
ing the number of coil turns around the core, the Hall Effect switch can act as either a current indicator or
current limiter.
Example:
Under normal operation a current of 10 Amps is delivered to a motor by some wire. Wrapping four turns
of the wire around the core will produce a magnetic field of 24 mT upon the Hall IC, which will activate
the device to ON. This can be used to illuminate an LED to symbolizing normal current. The LED will
remain ON until the field drops to about 18mT or about 7.5 Amps.
To use as a limiter, simply drop one turn of wire, which will require a higher current to turn the Hall switch
ON. With 1 turn removed, the switch will require 13 Amps to turn ON, and will remain on until the cur-
rent level drops below 1Amp.
PTC
TM
Figure 18, Programmable Current Sensor
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MX887DHTTR | MICROPOWER HALL-EFFECT SWITCH |
| MX887PHTTR | IC HALL EFFECT SW UPWR TSOT23-3 |
| OMH3040S | SENSOR HALLOGIC HALL EFFECT |
| OPB122B | SWITCH SLOTTED OPTIC PHOTOLOGIC |
| OPB200 | SENSR OPTO SLOT 5.1MM TRANS THRU |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MLX90215LVA | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Precision Programmable Linear Hall Effect Sensor |
| MLX90215LVA-AAA-111-BA | 制造商:Melexis Semiconductors 功能描述:IC HALL EFFECT SENSOR PREC 4SIP |
| MLX90215LVA-AAA-111-BU | 功能描述:IC SENSOR PROG LINEAR HALL 4SIP RoHS:是 類別:傳感器，轉(zhuǎn)換器 >> 磁性 - 霍爾效應(yīng)，數(shù)字式開關(guān)，線性，羅盤 (IC) 系列:- 標準包裝:1 系列:- 傳感范圍:20mT ~ 80mT 類型:旋轉(zhuǎn) 電源電壓:4.5 V ~ 5.5 V 電流 - 電源:15mA 電流 - 輸出（最大）:- 輸出類型:數(shù)字式，PWM，8.5 位串行 特點:可編程 工作溫度:-40°C ~ 150°C 封裝/外殼:20-SSOP（0.209"，5.30mm 寬） 供應(yīng)商設(shè)備封裝:20-SSOP 包裝:Digi-Reel® 其它名稱:AS5132-HSST-500DKR |
| MLX90215LVA-BC03 | 功能描述:IC SENSOR LIN HALL 10MV/MT 2.5V RoHS:是 類別:傳感器，轉(zhuǎn)換器 >> 磁性 - 霍爾效應(yīng)，數(shù)字式開關(guān)，線性，羅盤 (IC) 系列:- 標準包裝:1 系列:- 傳感范圍:20mT ~ 80mT 類型:旋轉(zhuǎn) 電源電壓:4.5 V ~ 5.5 V 電流 - 電源:15mA 電流 - 輸出（最大）:- 輸出類型:數(shù)字式，PWM，8.5 位串行 特點:可編程 工作溫度:-40°C ~ 150°C 封裝/外殼:20-SSOP（0.209"，5.30mm 寬） 供應(yīng)商設(shè)備封裝:20-SSOP 包裝:Digi-Reel® 其它名稱:AS5132-HSST-500DKR |
| MLX90215LVA-CC03 | 功能描述:IC SENSOR LIN HALL 20MV/MT 2.5V RoHS:否 類別:傳感器，轉(zhuǎn)換器 >> 磁性 - 霍爾效應(yīng)，數(shù)字式開關(guān)，線性，羅盤 (IC) 系列:- 標準包裝:1 系列:- 傳感范圍:20mT ~ 80mT 類型:旋轉(zhuǎn) 電源電壓:4.5 V ~ 5.5 V 電流 - 電源:15mA 電流 - 輸出（最大）:- 輸出類型:數(shù)字式，PWM，8.5 位串行 特點:可編程 工作溫度:-40°C ~ 150°C 封裝/外殼:20-SSOP（0.209"，5.30mm 寬） 供應(yīng)商設(shè)備封裝:20-SSOP 包裝:Digi-Reel® 其它名稱:AS5132-HSST-500DKR |
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