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參數(shù)資料
| 型號： | A1642LKTN-I2-T |
| 廠商： | Allegro MicroSystems, Inc. |
| 英文描述： | Two-Wire True Zero-Speed Miniature Differential Peak-Detecting Sensor with Continuous Calibration |
| 中文描述： | 雙線真零高速微型差分峰值檢測與連續(xù)校準(zhǔn)傳感器 |
| 文件頁數(shù)： | 1/13頁 |
| 文件大?。?/td> | 336K |
| 代理商： | A1642LKTN-I2-T |
A1642LK
A1642LK-DS
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
Operating Temperature
Ambient, T
A
,...............................
–40oC to 150oC
Maximum Junction, T
J(max)
........................
165oC
Storage Temperature, T
S
..................
–65oC to 170oC
Running mode calibration for continu-
ous optimization
Single chip IC for high reliability
Internal current regulator for 2-wire
operation
Precise duty cycle signal over
operating temperature range
Large operating air gaps
Automatic Gain Control (AGC) for air
gap independent switchpoints
Automatic Offset Adjustment (AOA)
for signal processing optimization
True zero-speed operation
Undervoltage lockout
Wide operating voltage range
The A1642 is an optimized Hall effect sensing integrated circuit that provides a
user-friendly solution for true zero-speed digital ring-magnet sensing in two-wire
applications. This small package can be easily assembled and used in conjunction
with a wide variety of target shapes and sizes.
The integrated circuit incorporates a dual-element Hall effect sensor and signal
processing that switches in response to differential magnetic signals created by
ring magnet poles. The circuitry contains a sophisticated digital circuit to reduce
system offsets, to calibrate the gain for air-gap–independent switchpoints, and to
achieve true zero-speed operation. Signal optimization occurs at power-on through
the combination of offset and gain adjust and is maintained throughout the operat-
ing time with the use of a running-mode calibration. The running-mode calibration
allows immunity to environmental effects such as micro-oscillations of the target
or sudden air gap changes.
The regulated current output is con
fi
gured for two-wire applications and the
sensor is ideally suited for obtaining speed and duty cycle information in ABS
(antilock braking systems). The 1.5 mm spacing between the dual Hall elements is
optimized for
fi
ne pitch ring-magnet-based con
fi
gurations. For applications requir-
ing sensing of rotating ferrous gears and targets, refer to the ATS642LSH series of
products. The package is lead (Pb) free, with 100% matte tin leadframe plating.
Two-Wire True Zero-Speed Miniature Differential
Peak-Detecting Sensor with Continuous Calibration
Package K, 4-pin SIP
Features and Bene
fi
ts
1. VCC
2. No connection
3. Test pin (
fl
oat or tie to GND)
4. GND
Use the following complete part numbers when ordering:
Part Number
Packing*
I
CC
Typical
A1642LK-I1-T
Bulk, 500 pieces/bag
6.0 Low to 14.0 High mA
A1642LKTN-I1-T
Tape and reel, 13-inch reel
4000 pieces/reel
A1642LK-I2-T
Bulk, 500 pieces/bag
7.0 Low to 14.0 High mA
A1642LKTN-I2-T
Tape and reel, 13-inch reel
4000 pieces/reel
*Contact Allegro for additional packing options.
1 2 3 4
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