Datasheet > A1454

A1454

更新时间： 2022-02-26 11:15:28

品牌	Logo	应用领域
急速微 - ALLEGRO		/
页数	文件大小	规格书
15页	434K
描述
3V Hall Effect Linear Sensor with I2C Output

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A1454 数据手册

A1454

3V Hall Effect Linear Sensor with I²C Output

FEATURES AND BENEFITS

DESCRIPTION

• 1 mm thin (TSSOP-08) package

TheA1454linearHalleffectsensorICprovidesa12-bitdigital

• 2 factory programmed sensitivity options: 2 LSB/G (for

fields up to ±1000 G) and 4 LSB/G (±500 G)

• Temperature-stable sensitivity for NdFeB and ferrite

magnets

output word that is proportional to the strength of the magnetic

fieldthatispresent.Itsquiescentoutputvalueisatmid-scale,and

it comes in 2 different factory programmed sensitivity ranges:

2LSB/G & 4LSB/G. The sensitivity temperature coefficient

is also factory programmed to support either Neodymium or

Ferrite magnets. The A1454 incorporates an I²C interface for

easy integration into a wide variety of applications. The I²C

address can either be set by external resistors or programmed

via EEPROM, to support up to 127 unique I²C addresses,

allowing for multiple ICs on the same bus. It also includes 16

bytes of user programmable EEPROM.

• I²C interface for easy integration with support for up to

127 unique addresses

• EEPROM stores factory programmed settings and up to

16 bytes of user information (programmable through the

I²C interface)

• Micro-power sleep mode through I²C command for

minimizing power in battery-operated applications

• Precise recoverability after temperature cycling

• Wide ambient temperature range: –40°C to 125°C

• 12-bit ADC with 10-bit ENOB (Effective Number of

Bits)

TheA1454I²Cinterfaceprovidesauser-controlledsleepinput

command that puts the device in micro-power mode, which

reducesthecurrentconsumptionoftheA1454.Thislowpower

feature makes theA1454 perfect for portable, battery-operated

applications.

The BiCMOS monolithic process allows the integration of

both high precision analog and high-density digital circuitry.

The A1454 integrates the Hall element, a 12-bit ADC, gain &

offset compensation circuitry, EEPROM memory and the I²C

interface on a single monolithic IC that is packaged in a space

saving surface mount package.

Package: 8-Pin TSSOP (suffix LE)

Engineering samples are available on a limited basis. Contact your sales or

applications support office for additional information.

Not to scale

VCC

Sleep

Mode

I²C Serial

SDA

Interface

SCL

VCC

10 kΩ

I²C

Master

SCL

VCC

0.1 µF

Digital Controller

ADC

SDA

V_A0

ADR0

Hall

Element

VCC

A1454

ADR0

ADR1

Slave

Address

ADC

V_A1

ADR1

GND

EEPROM

Memory

Charge

Pump

GND

Functional Block Diagram

Typical Application Circuit

A1454-DS

12 3 4 5 6 7...15

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