A33002LLEATR传感器变送器的磁性传感器-线性罗盘（IC）规格书PDF中文资料

A33002LLEATR属于传感器变送器的磁性传感器-线性罗盘（IC）。由Allegro MicroSystems制造生产的A33002LLEATR磁性传感器 - 线性，罗盘（IC）该系列产品可用于将磁场强度作为一个可变数量进行测量，而相比之下，类似产品仅检测是否存在强度超过某个限值的磁场。常见的应用包括测量地球磁场，以类似于传统罗盘的方式进行定向，市面上的一些器件允许以相对于磁场的物理方向直接读取测量值。

FEATURES AND BENEFITS

• Contactless 0° to 360° angle sensor IC for angular

position, rotational speed, and direction measurement

□ Capable of sensing magnet rotational speeds targeting

12-bit effective resolution with 900 G field

□ Circular vertical Hall (CVH) technology provides

a single-channel sensor system with air-gap

independence

• On-chip 32-segment linearization to improve angle accuracy

□ Reduces the impact of magnet-to-sensor misalignment

□ Reduces the impact of imperfect magnetization of

target magnet

• Developed in accordance with ISO 26262 requirements

for hardware product development for use in safetycritical applications

□ Single-die version designed to meet ASIL B

requirements when integrated and used in conjunction

with the appropriate system-level control, in the

manner prescribed in the A33002 Safety Manual

□ Dual-die version designed to meet ASIL D

requirements when integrated and used in conjunction

with the appropriate system-level control, in the

manner prescribed in the A33002 Safety Manual

• Digital output format selectable between SPI, SENT, or

PWM

• Programmable via Manchester encoding on the VCC line

(user to device) and VOUT line (device to user), reducing

external wiring

SENT output is SAE J2716 JAN2010-compliant with Allegro

proprietary enhancements

□ Customer-programmable SENT tick times ranging

from 0.5 to 7.9 µs

• On-chip EEPROM for storing factory and customer

calibration parameters

□ Integrated charge pump allows in-application programming

without any requirement for high voltages to be supplied to

the device during programming

□ Single-bit error correction, dual-bit error detection error

correction control (ECC)

• Supports operation in harsh conditions required for automotive

and industrial applications

□ Operating temperature range from –40°C to 150°C

□ Operating supply voltage range from 3.7 to 5.5 V, absolute

maximum of 28 V

• Loss of power is indicated by a reset flag

• 10 MHz SPI for low-latency angle and diagnostic data; enables

multiple independent ICs to be connected to the same bus

□ 4-bit CRC

• Multiple programming/configuration formats supported

□ The system can be completely controlled and programmed

over SPI or Manchester protocol, including EEPROM writes

□ For system with limited pins available, writing and reading

can be performed over VCC and VOUT pins.

□ 1 mm-thin, surface-mount TSSOP package to minimize air

gap from target magnet to the CVH transducer for improved

field strength

DESCRIPTION

The A33002 is a 360° angle sensor IC that provides contactless

high-resolution angular position data based on magnetic circular

vertical Hall (CVH) technology. It has a system-on-chip (SoC)

architecture that includes: a CVH front end, digital signal

processing to calculate the angular position data, and selectable

output protocols (SPI, SENT, or PWM). It also includes on-chip

EEPROM technology capable of supporting up to 100 read/

write cycles for flexible programming of calibration parameters.

The A33002 is ideal for automotive applications requiring 0°

to 360° angle measurements, such as electronic power steering

(EPS), transmission actuators, and BLDC pumps.

The A33002 includes on-chip 32-segment linearization. This

can be used to calibrate out errors due to misalignment between

the magnet and the sensor or imperfect magnetization of the

target magnet (which can present itself as a misalignment of

the magnet to the sensor).

The A33002 supports customer integration into safety-critical

applications.

The A33002 is available in a single-die or dual-die 14-pin TSSOP

package (suffix LE). The package is lead (Pb) free with 100% matte

tin leadframe plating. The 1 mm-thin package reduces the minimum

air gap between the CVH transducer and the target magnet.