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參數(shù)資料
| 型號： | A1425 |
| 廠商： | Allegro MicroSystems, Inc. |
| 元件分類： | 速度傳感器和接近開關(guān) |
| 英文描述： | High Accuracy Analog Speed Sensor with Integrated Filter Capacitor and Dual Zero-Crossing Output Signal |
| 中文描述： | 高精度模擬集成濾波電容器和雙零速傳感器輸出信號通道 |
| 文件頁數(shù)： | 1/12頁 |
| 文件大?。?/td> | 502K |
| 代理商： | A1425 |
A1425
A1425-DS Rev. 0b
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
115 Northeast Cutoff, Box 15036
Allegro MicroSystems, Inc.
AB SO LUTE MAX MUM RAT NGS
Supply Voltage, V
CC
..........................................
28 V
Reverse-Supply Voltage, V
RCC
........................
–18 V
Output Current, I
OUT
.......................................
25 mA
Reverse-Output Current, I
ROUT
.....................
–50 mA
Reverse-Output Voltage, V
ROUT
...................
–50 mA
Operating Temperature
Ambient, T
A
................................
–40oC to 150oC
Maximum Junction, T
J(max)
........................
165oC
Storage Temperature, T
S
..................
–65oC to 170oC
Use the following complete part number when ordering:
Package K, 4-pin SIP
Features and Bene
fi
ts
The A1425 ac-coupled Hall-effect sensor is a monolithic integrated circuit that
switches in response to changing differential magnetic
fi
elds created by rotating
ring magnets or, when coupled with a magnet, by ferrous targets. The device is a
true zero-crossing detector: the output switches precisely when the difference in
magnetic
fi
eld strength between the two Hall elements is zero. A unique dual-
comparator scheme provides for accurate switching during zero-crossing, both
when the sensed
fi
eld is increasing in strength and when it is decreasing, while
utilizing hysteresis to prevent false switching. The zero-crossing nature of this
device provides excellent repeatability for crankshaft applications.
Changes in
fi
eld strength at the device face caused by a moving target are sensed
by the two integrated Hall transducers, generating signals that are differen-
tially ampli
fi
ed by on-chip electronics. This differential sensing design provides
immunity to radial vibration within the operating air gap range of the A1425, by
rejection of the common mode signal. Steady-state magnet and system offsets are
eliminated using an on-chip differential band-pass
fi
lter. This
fi
lter also provides
relative immunity to interference from electromagnetic sources.
The device utilizes advanced temperature compensation for the high-pass
fi
lter,
sensitivity, and the Schmitt trigger switchpoints, guaranteeing optimal operation to
low frequencies over a wide range of air gaps and temperatures.
Each Hall effect digital integrated circuit includes a voltage regulator, two Hall
effect sensing elements, temperature compensating circuitry, a low-level ampli-
fi
er, band-pass
fi
lter, Schmitt trigger, and an output driver. The on-board regulator
permits operation with supply voltages from 4.0 to 26.5 V. The output stage can
easily switch 20 mA over the full frequency response range of the sensor, and is
compatible with both TTL and CMOS logic circuits.
The device is packaged in a 4-pin plastic SIP (part number suf
fi
x
-K
).
Senses motion of ring magnet targets
Integrated
fi
lter capacitor
Wide operating temperature range
Operation with frequency of sensed transitions from 20 Hz to 30 kHz
EMI-resistant
Large working air gaps
4.0 to 26.5 V operating range
Output compatible with both TTL and CMOS logic families
Reverse battery protection
Part Number
A1425LK
Package
4-pin plastic SIP
Ambient (oC)
–40 to 150
1. VCC
2. VOUT
3. Test pin, tie to GND
4. GND
1
2
3
4
High Accuracy Analog Speed Sensor with Integrated Filter Capacitor
and Dual Zero-Crossing Output Signal
Preliminary Data Sheet
Subject to Change Without Notice
November 10, 2004
Engineering samples available on a limited basis. Contact your local
sales or applications support of
fi
ce for additional information.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| A-1425 | 功能描述:通用繼電器 DC SOLENOID RoHS:否 制造商:Omron Electronics 觸點形式:1 Form A (SPST-NO) 觸點電流額定值:150 A 線圈電壓:24 VDC 線圈電阻:144 Ohms 線圈電流:167 mA 切換電壓:400 V 安裝風(fēng)格:Chassis 觸點材料: |
| A1425_05 | 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:High Accuracy Analog Speed Sensor with Integrated Filter Capacitor and Dual Zero-Crossing Output Signal |
| A14259-01 | 功能描述:導(dǎo)熱接口產(chǎn)品 Tgrease 2500 1kg 3.8W/mK Sil Free RoHS:否 制造商:Panasonic Electronic Components 類型:Thermal Graphite Sheets 材料:Graphite Polymer Film 長度:180 mm 寬度:115 mm 厚度:0.07 mm 工作溫度范圍: |
| A14259-02 | 功能描述:導(dǎo)熱接口產(chǎn)品 Tgrease 2500 3kg 3.8W/mK Sil Free RoHS:否 制造商:Panasonic Electronic Components 類型:Thermal Graphite Sheets 材料:Graphite Polymer Film 長度:180 mm 寬度:115 mm 厚度:0.07 mm 工作溫度范圍: |
| A14259-03 | 功能描述:導(dǎo)熱接口產(chǎn)品 Tgrease 2500 10kg 3.8W/mK Sil Free RoHS:否 制造商:Panasonic Electronic Components 類型:Thermal Graphite Sheets 材料:Graphite Polymer Film 長度:180 mm 寬度:115 mm 厚度:0.07 mm 工作溫度范圍: |
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