Datasheet > ATS468

ATS468

更新时间： 2024-09-18 01:12:51

品牌	Logo	应用领域
急速微 - ALLEGRO		/
页数	文件大小	规格书
15页	847K
描述
Wide operating voltage range

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中文翻译

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ATS468 数据手册

ATS468

Three-Wire True Zero-Speed Differential Peak-Detecting

Sensor IC with Continuous Calibration

FEATURES AND BENEFITS

• Wide operating voltage range

DESCRIPTION

TheATS468isatruezero-speedgeartoothsensorICconsisting

• Peak detecting algorithm robust against signal

perturbations

of an optimized Hall IC and a permanent magnet pellet

configuration in a single overmolded package. The integrated

circuit provides a manufacturer-friendly solution for digital

gear tooth sensing applications. This small package can be

easily assembled and used in conjunction with gears of various

shapes and sizes.

• Capable of sensing a wide range of target types

• Running mode calibration for continuous optimization

• Single chip IC for high reliability

• Precise duty cycle signal throughout 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

The integrated circuit incorporates dual Hall effect elements

with a 2.2 mm spacing and signal processing that switches

in response to differential magnetic signals created by a

ferromagnetic target. 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-

speedoperation.Signaloptimizationoccursatpower-onthrough

the combination of offset and gain adjust, and is maintained

throughout the operating time with the use of a running-mode

calibration. The running-mode calibration provides immunity

toenvironmentaleffectssuchasmicro-oscillationsofthetarget

or sudden air gap changes.

Continued on the next page…

Packages:

4-Pin SIP (suffix SG)

4-Pin SIP (suffix SJ)

The device is ideally suited to obtaining speed and duty cycle

information in gear tooth–based speed, position, and timing

applications, such as in speedometers.

Continued on the next page…

Not to scale

VCC

Internal

Regulator

Hall

Amplifier

∑

Gain

Automatic Offset

Adjustment (AOA)

Control

AOA DAC

Automatic Gain

Control (AGC)

AGC DAC

OUT

–

Tracking DAC

Peak Hold

Current

Limit

Test Signals

TEST

GND

Functional Block Diagram

ATS468-DS

12 3 4 5 6 7...15

中文翻译

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