Description
The ATS682LSH is a Hall-effect integrated circuit and rare
earth pellet combination that provides a user-friendly solution
for true zero-speed digital gear-tooth sensing in two-wire
applications. This small package, with an optimized two-wire
leadframe, can be easily assembled and used in conjunction
with a wide variety of gear shapes and sizes.
The integrated circuit incorporates a dual-element Hall-effect
circuit and signal processing that switches in response to
differential magnetic signals created by ferrous gear teeth.
The circuitry contains a sophisticated digital circuit that
reduces magnet and system offsets, calibrates the gain for air
gap independent switchpoints and provides true zero-speed
operation.
Signal optimization occurs at power-up through the adjustment
of offset and gain and is and is maintained throughout operation
with the use of a running-mode calibration scheme. Running-
mode calibration provides immunity from environmental effects
such as micro-oscillations of the sensed target or sudden air
gap changes.
The regulated current output is configured for two-wire interface
circuitry and is ideally suited for obtaining speed information in
wheel speed applications. The Hall element spacing is optimized
for high resolution, small diameter targets. The package is lead
(Pb) free, with 100% matte tin lead frame plating.
ATS682-DS, Rev. 2
Features and Benefits
?True zero-speed operation
?Automatic Gain Control (AGC) for air gap independent
switchpoints
?Automatic Offset Adjustment (AOA) for signal processing
optimization
?Running-mode calibration for continuous optimization
?Precise duty cycle over operating temperature range
?Internal current regulator for two-wire operation
?Undervoltage lockout
?On-chip voltage regulator with wide operating voltage
range and stability in the presence of a variety of complex
load impedances
?Single chip IC for high reliability
Miniature, Two-Wire, True Zero Speed
Differential Peak-Detecting Sensor IC
Functional Block Diagram
ATS682LSH
Package: 4-pin SIP (suffix SH)
Not to scale
VCC
Automatic Offset
Control
AOA DAC
Hall
Amplifier
AGC DAC
Gain
Tracking
DAC
Peak Hold
Gain Control
Internal Regulator
Test Signals
GND
Test
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相关代理商/技术参数
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ATS685LSH 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Two-Wire, Zero Speed Differential Gear Tooth Sensor IC
ATS685LSHTN-T 功能描述:IC HALL EFFECT GEAR SENSOR 4SIP RoHS:是 类别:传感器,转换器 >> 磁性 - 霍尔效应,数字式开关,线性,罗盘 (IC) 系列:- 标准包装:1 系列:- 传感范围:20mT ~ 80mT 类型:旋转 电源电压:4.5 V ~ 5.5 V 电流 - 电源:15mA 电流 - 输出(最大):- 输出类型:数字式,PWM,8.5 位串行 特点:可编程 工作温度:-40°C ~ 150°C 封装/外壳:20-SSOP(0.209",5.30mm 宽) 供应商设备封装:20-SSOP 包装:Digi-Reel® 其它名称:AS5132-HSST-500DKR
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