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參數(shù)資料
| 型號： | HMC1052 |
| 廠商： | Honeywell International Inc. |
| 英文描述： | 2- Axis Magnetic Sensors(兩軸磁場傳感器) |
| 中文描述： | 2 -軸磁傳感器（兩軸磁場傳感器） |
| 文件頁數(shù)： | 5/8頁 |
| 文件大?。?/td> | 398K |
| 代理商： | HMC1052 |
HMC1051 / HMC1052
SENSOR PRODUCTS
Web Sites:
www.magneticsensors.com
www.ssec.honeywell.com
Honeywell
Solid State Electronics Center
12001 State Highway 55
Plymouth, Minnesota 55441-4799
Email: ssec.customer.service@honeywell.com
2001 HMC1051/1052 Published Jul 2001 Page 5
1-800-323-8295
Set/Reset Circuit Notes
The set/reset circuit using the IRF7507 dual complementary MOSFETs is shown in Figure 2 with more detail in its H-
bridge driven configuration. This configuration is used primarily in battery operated applications were the 0.5 ampere
nominal set/reset pulsed currents are best obtained under low voltage conditions. For operation at normal 3.3 or 5
volt logic levels, a single complementary MOSFET pair can be used in a single ended circuit shown in Figure 3.
Other complementary MOSFET pairs can be used with the caution that the chosen devices should have less than
0.5 ohms ON resistance and be able to handle the needed supply voltages and set/reset currents. Note that even a
1Hz rate of set/reset function draws an average current of less than 2 microamperes.
Magnetic Field Detection
For simple magnetic field sensing applications such Magnetic Anomaly Detectors (MADs) and Magnetometers, a
similar circuit to the compass application can be implemented. In the example circuit in Figure 4, a HMC1051Z
sensor bridge is used with a low voltage capable dual op-amp to detect sufficient intensity of a magnetic field. Uses
of the circuit include ferrous object detection such as vehicle detection, a “sniffer” for moderate currents in nearby
conductors, and magnetic proximity switching. By using two circuits with a HMC1052, a more omni-directional
sensing pattern can implemented. There is nothing special in choosing the resistors for the differential op-amp gain
stages other than having like values (e.g. the two 5k and the 500k resistors) matched at 1% tolerance or better to
reject common-mode interference signals (EMI, RFI). The ratio of the 500k /5k resistors sets the stage gain and
can be optimized for a specific purpose. The choice of the 5k value sets impedance loading seen by the sensor
bridge network and should be about 4 kilo-ohms or higher for best voltage transfer or matching.
D
D
S
S
G
G
IRF7509(P)
IRF7509(N)
Vcc
200
1 f
+
-
Vsr
D
D
S
S
G
G
IRF7509(P)
IRF7509(N)
Vsr
set/reset
_set/reset
4
.1 f
Rset/reset
Figure 2
D
D
S
S
G
G
IRF7509(P)
IRF7509(N)
Vcc
200
1 f
+
-
Vsr
set/reset
4
.1 f
Rset/reset
Figure 3
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| HMC1055 | 功能描述:KIT COMPASS SENSOR 3-AXIS RoHS:否 類別:套件 >> 傳感器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 套件類型:氣體傳感器 值:27929，27930，27931，27932 包裝:紙板盒 |
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