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Circular Vertical Hall Sensor IC Allegro A33002LLEBTR-DD Suitable for Electronic Power Steering and Actuators

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Circular Vertical Hall Sensor IC Allegro A33002LLEBTR-DD Suitable for Electronic Power Steering and Actuators

Description : Linear, Compass (ICs) RoHS

Mfr. Part # : A33002LLEBTR-DD

Model Number : A33002LLEBTR-DD

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Product Overview

The Allegro A33002 is a contactless 360 angle sensor IC utilizing Circular Vertical Hall (CVH) technology to provide high-resolution angular position data. Its system-on-chip (SoC) architecture integrates a CVH front end, digital signal processing for angle calculation, and selectable output protocols including SPI, SENT, and PWM. The device features on-chip EEPROM for flexible programming of calibration parameters with up to 100 read/write cycles. With on-chip 32-segment linearization, it corrects for misalignment and imperfect magnet magnetization, enhancing accuracy. The A33002 is designed for safety-critical automotive applications such as electronic power steering (EPS), transmission actuators, and BLDC pumps, supporting customer integration in accordance with ISO 26262 requirements, with single-die versions targeting ASIL B and dual-die versions targeting ASIL D. It operates across a wide temperature range (40C to 150C) and supports various programming interfaces including SPI and a unique Manchester protocol on the VCC line.

Product Attributes

Brand: Allegro MicroSystems
Technology: Circular Vertical Hall (CVH)
Certifications: Developed in accordance with ISO 26262 requirements for hardware product development for use in safety-critical applications.
Package: 14-pin TSSOP (Suffix LE)
Material: Lead (Pb) free with 100% matte tin leadframe plating.

Technical Specifications

Feature	Specification	Details
Angle Measurement	Contactless 0 to 360	Angular position, rotational speed, and direction measurement
Resolution	Up to 12-bit effective resolution	Sensing magnetic field strength up to 900 G
Linearization	On-chip 32-segment	Improves angle accuracy by correcting misalignment and imperfect magnetization
Output Protocols	Selectable	SPI, SENT, PWM
Programming	On-chip EEPROM	Up to 100 read/write cycles; Programmable via Manchester encoding on VCC/VOUT lines or SPI
Safety Integrity Level (ASIL)	ASIL B (single-die) / ASIL D (dual-die)	When integrated and used in conjunction with appropriate system-level control, as prescribed in the A33002 Safety Manual
Operating Voltage	3.7 V to 5.5 V	Absolute maximum of 28 V
Operating Temperature	40C to 150C	Ambient temperature range
SPI Clock Frequency	Up to 10 MHz	Supports 16-, 17-, or 20-bit packet lengths with optional 4-bit CRC
SENT Tick Time	0.5 s to 7.9375 s	Configurable via EEPROM
PWM Carrier Frequency	Configurable	128 selectable frequencies ranging from 98 Hz to 3.125 kHz
Angle Error (Typical)	0.4 @ 25C	With ideal magnet alignment and 300 G field
Angle Noise (3-sigma)	0.19	@ 25C, 300 G, no internal filtering
Turns Counting	Integrated	Supports up to 256 full mechanical rotations; configurable initialization
Package Dimensions	14-pin TSSOP	1 mm thin package to minimize air gap
Models	A33002LLEATR (Single Die)	Available in 3.3 V or 5.0 V interface
Models	A33002LLEBTR-DD (Dual Die)	Available in 3.3 V interface

2401241357_ALLEGRO-A33002LLEBTR-DD_C3716291.pdf

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