KTH7812 16 位分辨率非接触式霍尔磁编码器 可编程 ABZ 和 UVW 输出模式角度传感器

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KTH7812 是一款高精度绝对角度霍尔传感器芯片，最高 16 位分辨率绝对角度输出，可
实现在轴向和离轴场合下的无接触式磁场角度测量。不论转速范围在 0-120000rpm 之间，
KTH7812 都能快速准确地输出角度信息，适用于需要精准角度测量和转速控制的各个领域。
KTH7812 提供多种灵活的角度输出模式，满足不同应用需求。首先，它支持可编程的最大
4096 步 ABZ 正交脉冲输出，提供高分辨率和精准的位置信息。其次，可编程的 1-8 对极
UVW 增量输出可满足不同场合的应用。此外，KTH7812 还支持四线制 SPI 输出角度，便于
与其他设备进行通信和数据交换。
为了更好地适应实际应用需求，KTH7812 还内置了磁场强度检测功能。用户可以根据具体情
况通过编程设置过高和过低磁场强度的阈值，实时监测磁场强度并进行相应处理。这为用户
选择合适的磁铁和安装距离提供了便利。
此外，KTH7812 集成了 MTP（多次可编程存储器），用于存储重要配置参数。用户可以存储
参考零角位置、ABZ 编码器设置和磁场检测阈值等信息，以便在不同应用场景下进行灵活配
置和调整。

1 产品信息
1.1 产品特点
- 16-bit 分辨率绝对角度输出
- 高精度，精度误差小于 0.7°
- 适用于各种在轴、离轴无接触式场景
- 超低延时，每 1us 更新一次数据
- SPI 通信：角度读取、寄存器读写
- 可编程 4-4096 步/圈 ABZ 输出
- 可编程 1-8 对极 UVW 输出
- 内置可编程存储器 MTP
- 磁场强度诊断/报警
- 工作电压 3.3 或 5V 可选
- 工作温度范围为-40°C 至 125°C
- QFN-16L 封装: 3mm x 3mm

1.2 典型应用
- 绝对角度位置传感器
- 无刷直流电机
- 离轴角度测量
- 电梯
- 屏蔽

KTH7812 是一款霍尔角度编码器，它集成了霍尔器件、数模转
换器（ADC）和各种模块，用于精确测量角度并输出相应的数字
信号。
该编码器的霍尔器件产生电压信号，经过 ADC 转换为两路正交
数字信号, 再经过 ATAN 模块进行计算，得到 16 位的数字角度。
数字角度经过零点设置、转动方向设置和滤波处理。
编码器的输出接口可以通过 SPI 通信直接输出滤波后的角度数
值，用户可以使用 MCU 或其他电路直接读取。
为了提高刷新频率，滤波后的角度可以经过插值器处理，并输出
给 ABZ 和 UVW 角度编码模块，将角度转换为所需的编码信号。
此外，系统的各种运行参数存储在可编程的多次写入存储器
（MTP）中，可以通过 SPI 命令进行修改，以满足不同应用的需
求。

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