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參數(shù)資料
| 型號(hào)： | HMC1021Z |
| 廠商： | Honeywell International Inc. |
| 英文描述： | 1- Axis Magnetic Sensors(一軸磁場(chǎng)傳感器) |
| 中文描述： | 1 -軸磁傳感器（一軸磁場(chǎng)傳感器） |
| 文件頁數(shù)： | 10/15頁 |
| 文件大小： | 627K |
| 代理商： | HMC1021Z |
LINEAR MAGNETIC FIELD SENSORS
10
Figure 10
—
Single Clock Set/Reset Circuit (1001/1002)
Figure 11
—
Single Clock Reset Only Circuit (1001/1002)
Low Field Measurements
—
When measuring 100
μ
gauss
resolution or less, the permalloy film must be completely
set, or reset, to insure low noise and repeatable
measurements. A current pulse of 4 amps, or more, for just
a couple microseconds will ensure this. The circuits in
Figures 8 and 9 are recommended for applications of
HMC1001/2 that require low noise and high sensitivity
magnetic readings.
Low Cost
—
For minimum field measurements above 500
μ
gauss, a less elaborate pulsing circuit can be used. In both
Figures 10 and 11, the pulse signal is switched using lower
cost Darlington transistors and fewer components. This circuit
may have a more limited temperature range depending on the
quality of transistors selected. If accuracy is not an issue and
cost is, then the reset only circuit in Figure 11 will work.
The circuit in Figure 13 generates a strong set/reset pulse
under a microprocessor clock driven control. A free running
555 timer can also be used to clock the circuit. The SET
current pulse is drawn from the 1
μ
F capacitor and a 200
ohm dropping resistor should be placed in series with the
supply to reduce noise.
For any magnetic sensor application, if temperature drift is
not an issue, then the reset pulse need only be occasionally
applied. This will save power and enable the use of digital
filtering techniques as shown in Figure 12. Circumstances
for a reset pulse would be 1) power on or, 2) field over/
under range condition. Any other time the sensor should
perform normally.
*The HMC2003 has 3-axis S/R straps in series.
These are the HMC1001 and HMC1002 sensors.
Figure 12
—
5V Circuit for SET/RESET (1021/1022)
S/R strap @ 4.5
typ.
3A peak (min.)
10K
1
0.22μF
4.7μF (1)
+16 to 20V
17
HMC2003*
Clock
S/R
(1) Tantalum, low R
0.022μF
0.022μF
10K
ZTX605
ZTX705
10K
0.1
μ
F
1μF (1)
1
+5V
Clock
(1) Tantalum, low R
0.1
μ
F
0.1
μ
F
10K
FMMT617
FMMT717
200
9,15
14
HMC1022
8
S/R strap @ 4.5
typ.
3A peak (min.)
10K
1
0.22μF
+16 to 20V
17
HMC2003
Clock
S/R
0.022μF
100K
ZTX605
Clock
S/R
-16V
T
PW
≈
2 μsec
5V
reset
*
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HMC1021Z RC | 制造商:Honeywell Sensing and Control 功能描述: |
| HMC1021Z-RC | 功能描述:SENSOR LINEAR MAGN 1 AXIS 8-SIP 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(biāo)準(zhǔn)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(diǎn):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 |
| HMC1022 | 制造商:HITTITE 制造商全稱:Hittite Microwave Corporation 功能描述:GaAs pHEMT MMIC |
| HMC1022_12 | 制造商:HITTITE 制造商全稱:Hittite Microwave Corporation 功能描述:GaAs pHEMT MMIC |
| HMC1022-TR | 功能描述:SENSOR LINEAR MAGN 2 AXIS 16SOIC 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(biāo)準(zhǔn)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(diǎn):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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