AAS33051: Precision Angle Sensor IC with Incremental and Motor Commutation Outputs and On-Chip Linearization

AAS33051是一个360°角传感器IC，提供基于磁圆形垂直霍尔（CVH）技术的非接触式高分辨率角位置信息。它具有片上系统（SOC）架构，包括：CVH前端，数字信号处理，用于计算角位置信息，以及多种输出格式：串行协议（SPI），脉冲宽度调制（PWM），以及电机换向（UVW）或编码器输出（A，B，I）。它还包括片上EEPROM技术，能够支持多达100个读/写周期，以灵活地编程校准
parameters. The AAS33051 is ideal for automotive applications requiring 0° to 360° angle measurements, such as electronic power steering (EPS), electronic power braking (EPB or IDB),
transmission actuators, and BLDC pumps.

The AAS33051 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 AAS33051 supports customer integration into safetycritical applications.

AAS33051可用in a dual-die 24-pin eTSSOP and a single-die 14-pin TSSOP package. The packages are 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. The AAS33051 device is pin-compatible with the A1339 to enable easy migration.

AAS33051是根据ISO 26262：2011制定的，作为硬件安全元件之外的背景。单芯版本旨在满足ASIL B功能（待定评估）和D.ual die version designed to meet ASIL Dcapability (pending assessment), for use in automotive safety-related systems when integrated and used in the manner prescribed in the applicable safety manual and datasheet.

• 接触式0°至360°角传感器IC，用于角度位置，转速和方向测量
  • 能够感测磁铁转速，瞄准12.5位有效分辨率，具有300g磁场;更高的有效分辨率可能在更高的场强
  • 圆形垂直大厅（CVH）技术提供单通道传感器系统，具有气隙独立性
• 片上32段线性化以提高角度精度
  • 减少磁体对传感器未对准的影响
  • Reduces impact of imperfect magnetization of target magnet
• Developed as a Safety Element out of Context (SEooC) in accordance with ISO 26262:2011 requirements for hardware product development for use in safety-critical applications (pending assessment)
• High diagnostic coverage
  • 片上诊断包括逻辑内置自检（LBist），信号路径诊断和看门狗，以支持安全关键应用程序亚博尊贵会员
  • 4-bit CRC on SPI
• On-chip EEPROM for storing factory and customer calibration parameters
  • Single-bit error correction; dual-bit error detection, error correction control (ECC)
• Supports operating in harsh conditions required for automotive and industrial applications, including direct connection to 12 V battery
  • Operating temperature range from –40°C to 150°C
  • Operating supply voltage range from 3.7 to 18 V, absolute maximum of 28 V continuous
    ♦可以支持ISO 7637-2脉冲5B，最多39 V
• Low power mode and turns counter feature to keep track of motor position in automotive applications when the vehicle is turned off
  • Loss of power is indicated by reset flag
  • Externally stored positions can be written back to the turns counter
  • 支持易于系统集成的多种输出格式
  • ABI and UVW interfaces provide high resolution and lowest latency angle information
  • PWM接口为ABI / UVW接口提供初始位置
  • 10 MHz SPI for low latency angle and diagnostic information; enables multiple independent ICs to be connected to same bus
    ♦可以支持5 V SPI
  • Output resolution on ABI and UVW are selectable
• Multiple programming / configuration formats supported
  • 系统可以完全控制和编程在SPI上，包括EEPROM写入
  • 对于可用引脚有限的系统，可以通过VCC和PWM引脚进行写入和读数。这允许为仅连接ABI / UVW和PWM引脚的设备配置生产线中的EEPROM。
• 1 mm thin surface-mount TSSOP packages for both single and dual die versions to minimize air gap from target magnet to CVH transducer for improved field strength
  • Pin-compatible to single and dual die A1339 devices
  • Stacked dual die construction to improve channel-to-channel matching for systems that require redundant sensors