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參數資料
| 型號： | BU52014HFV-TR |
| 廠商： | Rohm Semiconductor |
| 文件頁數： | 6/14頁 |
| 文件大小： | 477K |
| 描述： | IC HALL EFFECT SW BIPO HVSOF5 |
| 特色產品： | ROHM Hall Effect Sensor ICs |
| 標準包裝： | 1 |
| 傳感范圍： | ±5mT 跳閘，±0.6mT 釋放 |
| 類型： | 全極開關 |
| 電源電壓： | 1.65 V ~ 3.3 V |
| 電流 - 電源： | 8µA |
| 電流 - 輸出（最大）： | ±0.5mA |
| 輸出類型： | 數字，開路集電極 |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | SOT-665 |
| 供應商設備封裝： | 5-HVSOF |
| 包裝： | 標準包裝 |
| 其它名稱： | BU52014HFV-DKR BU52014HFV-DKR-ND BU52014HFVDKR |
BU52004GUL, BU52014HFV
Technical Note
6/11
www.rohm.com
2010.01 - Rev.D
?2010 ROHM Co., Ltd. All rights reserved.
? Description of Operations
Micropower Operation (Small current using intermittent action)
(Offset Cancelation)
(Magnetic Field Detection Mechanism)
The dual output bipolar detection Hall IC adopts an
intermittent operation method to save energy. At startup, the
Hall elements, amp, comparator and other detection circuits
power ON and magnetic detection begins. During standby,
the detection circuits power OFF, thereby reducing current
consumption. The detection results are held while standby
is active, and then output.
Reference period: 50ms (MAX100ms)
Reference startup time: 48約
I
DD
Standby
Startup time
Period 50ms
t
Fig.20
The Hall elements form an equivalent Wheatstone (resistor)
bridge circuit. Offset voltage may be generated by a
differential in this bridge resistance, or can arise from
changes in resistance due to package or bonding stress. A
dynamic offset cancellation circuit is employed to cancel this
offset voltage.
When Hall elements are connected as shown in Fig. 21 and a
magnetic field is applied perpendicular to the Hall elements,
voltage is generated at the mid-point terminal of the bridge.
This is known as Hall voltage.
Dynamic cancellation switches the wiring (shown in the
figure) to redirect the current flow to a 90? angle from its
original path, and thereby cancels the Hall voltage.
The magnetic signal (only) is maintained in the sample/hold
circuit during the offset cancellation process and then
released.
GND
V
DD
I
B
?
Hall Voltage
Fig.21
The Hall IC cannot detect magnetic fields that run horizontal to the package top layer.
Be certain to configure the Hall IC so that the magnetic field is perpendicular to the top layer.
Fig.22
S
S
N
S
N
S
N
Flux direction
Flux direction
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相關代理商/技術參數 |
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| BU52014HFV-TR-CUT TAPE | 制造商:ROHM 功能描述:BU52014HFV Series 3.3 V ?0.5 mA SMT Omnipolar Detection Hall IC - HVSOF-5 |
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| BU52015GUL-E2 | 功能描述:板機接口霍耳效應/磁性傳感器 1.65-3.3V; +/-3.0mT Bipolar Detection RoHS:否 制造商:Honeywell 類型:Bipolar Hall-Effect Digital Position Sensor 工作電源電壓:3 V to 24 V 電源電流:3.5 mA 最大輸出電流:20 mA 工作點最小值/最大值:5 G, 55 G 最小/最大釋放點（Brp）:- 55 G, - 5 G 最大工作溫度:+ 150 C 安裝風格:SMD/SMT 封裝 / 箱體:SOT-23 |
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