A1335LLETR-T datasheet(2/29 Pages) ALLEGRO

Part #	A1335LLETR-T

Description	Precision Hall-Effect Angle Sensor IC with I 2C, SPI, and SENT Interfaces

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Manufacturer	ALLEGRO [Allegro MicroSystems]

Direct Link	http://www.allegromicro.com

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2 / 29 page

Precision Hall-Effect Angle Sensor IC

with I2C, SPI, and SENT Interfaces

A1335

2

Allegro MicroSystems, LLC

115 Northeast Cutoff

Worcester, Massachusetts 01615-0036 U.S.A.

1.508.853.5000; www.allegromicro.com

Features and Benefits (continued)

Specifications

3

Absolute Maximum Ratings

3

Thermal Characteristics

3

Pinout Diagram and Terminal List

4

Operating Characteristics

5

Functional Description

8

Overview

8

Operation

8

Diagnostic Features

11

Programming Modes

12

Manchester Serial Interface

13

Entering Manchester Communication Mode

13

Transaction Types

13

Writing to EEPROM

13

Manchester Interface Reference

14

SENT Output Mode

15

SENT Message Structure

16

Application Information

17

Serial Interface Description

17

Magnetic Target Requirements

18

Field Strength

18

On-Axis Applications

19

Off-Axis Applications

19

Effect of Orientation on Signal

21

Linearization

22

Correction for Eccentric Orientation

23

Harmonic Coefficients

24

PCB Layout

24

Typical Performance Characteristics

25

Package Outline Drawings

27

• Programmable range—can scale 22.5° to full-scale digital

output

• Microprocessor-based output linearization

• EEPROM with Error Correction Control (ECC) for trimming

calibration

• 1 mm thin (TSSOP) package

• Improved air-gap performance, based on continuous

background calibration

Selection Guide

Part Number

System Die

Package

Packing*

A1335LLETR-T

Single

14-pin TSSOP

4000 pieces per 13-in. reel

A1335LLETR-DD-T

Dual

24-pin TSSOP

4000 pieces per 13-in. reel

*Contact Allegro for additional packing options

Table of Contents

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A1335LLETR-T Datasheet(PDF) 2 Page - Allegro MicroSystems

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