Datasheet > A1357

A1357

更新时间： 2024-11-14 12:51:19

品牌	Logo	应用领域
急速微 - ALLEGRO		传感器
页数	文件大小	规格书
20页	423K
描述
Two-Wire High Precision Linear Hall-Effect Sensor IC

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中文翻译

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A1357 数据手册

A1357

Two-Wire High Precision Linear Hall-Effect Sensor IC

With Pulse Width Modulated Output Current

Features and Benefits

Description

▪ Two-wire output enables reduced wiring costs in

long wire systems

TheA1357 device is a high precision, programmable two-wire

Hall-effect linear sensor IC with a pulse width modulated

(PWM) current. The A1357 device converts an analog signal

from its internal Hall sensor element to a digitally encoded

PWM signal. The coupled noise immunity of the digitally

encoded PWM is far superior to the noise immunity of an

analog output signal.

▪ Simultaneous programming of PWM carrier frequency,

quiescent duty cycle (QDC), and sensitivity for system

optimization

▪ Fully differential signal path increases EMC immunity and

reduces output offset drifts

▪ Factory programmed sensitivity temperature coefficient

and quiescent duty cycle drift

▪ Programmability at end-of-line

▪ Pulse width modulated (PWM) current output provides

increased noise and EMC immunity compared to an

analog output

▪ Precise recoverability after temperature cycling

• Duty cycle clamps provide short circuit diagnostic

capabilities

▪ Optional 50% duty cycle calibration test mode at device

power up

▪ Wide ambient temperature range: –40°C to 150°C

▪ Resistant to mechanical stress

TheBiCMOS,monolithiccircuitinsideoftheA1357integrates

a Hall element, precision temperature-compensating circuitry

to reduce the intrinsic sensitivity and offset drift of the Hall

element, a small-signal high-gain amplifier, proprietary

dynamic offset cancellation circuits, and PWM conversion

circuitry. The dynamic offset cancellation circuits reduce the

residual offset voltage of the Hall element that is normally

caused by device overmolding, temperature dependencies,

and thermal stress. The high frequency offset cancellation

(chopping) clock allows for a greater sampling rate, which

increases the accuracy of the output current signal and results

in faster signal processing capability.

The A1357 sensor is provided in a lead (Pb) free 3-pin single

inline package (KB suffix), with 100% matte tin leadframe

plating.

Package: 3-pin SIP (suffix KB)

Not to scale

Functional Block Diagram

SUPPLY

VCC (and

programming)

PWM Carrier

Generation

Regulator

PWM

Frequency Trim

BYBASS

Signal

Conditioning

Signal

Recovery

Chopper

Switches

Amp

Voltage Controlled

Current Source

% Duty

Cycle

Sensitivity

Trim

Temperature

Compensation

% Duty Cycle

Temperature

Coefficient

GND

A1357-DS

12 3 4 5 6 7...20

中文翻译

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与A1357相关器件

型号	品牌	获取价格	描述	数据表
A1358	TOSHIBA	获取价格	TRANSISTOR (AUDIO FREQUENCY POWER AMPLIFIER APPLICATIONS)
A1359	ALLEGRO	获取价格	Factory-Programmed Dual Output Linear Hall Effect Sensor IC
A1359_16	ALLEGRO	获取价格	Factory-Programmed Dual Output Linear Hall Effect Sensor IC With Analog and Pulse Width Mo
A1359LLETR-RP-T	ALLEGRO	获取价格	Analog Circuit, 1 Func, PDSO8, TSSOP-8
A1359LLETR-T	ALLEGRO	获取价格	Factory-Programmed Dual Output Linear Hall Effect Sensor IC With Analog and Pulse Width Mo
A135A	ETC	获取价格	IC
A1360	ALLEGRO	获取价格	Low-Noise Programmable Linear Hall Effect Sensor ICs with
A1360_V	ALLEGRO	获取价格	Low-Noise Programmable Linear Hall Effect Sensor ICs with Adjustable Bandwidth (50 kHz Max
A1360LKTTN-T	ALLEGRO	获取价格	Hall Effect Sensor, 4.65-4.80V, BICMOS, Plastic/epoxy, Rectangular, 4 Pin, Through Hole Mo
A1361LKTTN-T	ALLEGRO	获取价格	Hall Effect Sensor, 4.65-4.80V, BICMOS, Plastic/epoxy, Rectangular, 4 Pin, Through Hole Mo

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