Datasheet > A1468

A1468

更新时间： 2024-09-28 01:19:23

品牌	Logo	应用领域
急速微 - ALLEGRO		/
页数	文件大小	规格书
15页	693K
描述
Three-Wire True Zero-Speed Differential Peak-Detecting Sensor IC with Continuous Calibration

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A1468 数据手册

A1468

Three-Wire True Zero-Speed Differential Peak-Detecting

Sensor IC with Continuous Calibration

FEATURES AND BENEFITS

DESCRIPTION

• 4.0 to 26.5 V supply operating range

• Minimum differential field 20 G_pk-pk

• Running mode calibration for continuous optimization

• Single chip IC for high reliability

• Precise duty cycle signal throughout operating

temperature range

TheA1468 is an optimized Hall effect sensing IC that provides

a user-friendly solution for digital ring-magnet sensing, or

when coupled with a magnet, ferromagnetic target sensing,

in three-wire applications. The small device package can be

easily assembled into applications for use in conjunction with

a wide variety of target shapes and sizes.

• 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

• Reverse battery protection

• Scan and IDDQ for increased test coverage

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 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 operating time with the use of a running-mode

calibration. The running-mode calibration provides immunity

toenvironmentaleffectssuchasmicro-oscillationsofthetarget

or sudden air gap changes.

PACKAGE: 4-PIN SIP (SUFFIX K)

The device is ideally suited to obtaining speed and duty cycle

information in ring-magnet–based speed, position, and timing

applications, such as in speedometers.

The A1468 is available in a 4-pin SIP (suffix K). The package

is lead (Pb) free, with 100% matte tin leadframe plating.

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

A1468-DS, Rev. 3

12 3 4 5 6 7...15

中文翻译

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与A1468相关器件

型号	品牌	获取价格	描述	数据表
A1468LK-T	ALLEGRO	获取价格	Three-Wire True Zero-Speed Differential Peak-Detecting Sensor IC with Continuous Calibrati
A146F150C0	SCHURTER	获取价格	Mains Power Connector, 10/15A, 125/250VAC, Male, Solder Terminal, ROHS COMPLIANT
A146FC00C0	SCHURTER	获取价格	Mains Power Connector, 10/15A, 125/250VAC, Male, Solder Terminal, ROHS COMPLIANT
A1479-1B/SURSURW/S530-A3	EVERLIGHT	获取价格	Single Color LED, Hyper Red, Diffused White, T-1 3/4, 5mm, LEAD FREE, PLASTIC PACKAGE-3
A1479-1B/SURSYGW/S530-A3	EVERLIGHT	获取价格	Dual Color LED, Hyper Red/super Yellow Green, Diffused White, T-1 3/4, 5mm, ROHS COMPLIANT
A1479-1B/SYGSYG/S530-E1	EVERLIGHT	获取价格	Visible LED
A1479-1B/SYGSYGC/S530-E1	EVERLIGHT	获取价格	Visible LED
A1479-1B/UYUYC/S530-A3	EVERLIGHT	获取价格	Single Color LED Array, Super Yellow, Water Clear, 5.9mm, ROHS COMPLIANT, PLASTIC PACKAGE-
A1479-1B/UYUYW/S530-A3	EVERLIGHT	获取价格	Single Color LED, Super Yellow, Diffused White, 5.9mm, LEAD FREE PACKAGE-3
A1479-1B-SURSYGW-S530-A3	EVERLIGHT	获取价格	5.0mm 1pcs Circuit Board Indicator

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