The TMR400X magnetic gear tooth sensors utilize a unique push-pull Wheatstone bridge design, including one or two Wheatstone full bridges, with four or eight unshielded high sensitivity TMR sensing elements. The Wheatstone bridge creates a differential voltage output with respect to the magnetic field gradient along the sensor’s sensitive direction. In the dual-bridge configuration, the two orthogonal Wheatstone full bridges provide sine and cosine voltage signals that can be used to measure both the gear tooth position and the direction of motion. The TMR400X magnetic gear tooth sensors offer superior performance with high sensitivity to the magnetic field gradient. They can detect very small changes in magnetic field, along with good temperature stability of the output signal.","The TMR400X magnetic gear tooth sensors are available in 6 different standard spacings of 0.25mm, 0.5mm, 0.75mm, 1.0mm, 2.0mm, and 3.0mm.","Two types of small form factor LGA packages are available. The package dimensions are 3mm × 3mm × 0.9mm, and 3mm × 6mm × 0.9mm.","Features and Benefits:","Applications:

特性

• 隧道磁电阻技术
• 高饱和点，可在大直流磁场下工作
• 气隙宽公差
• 对磁场梯度有很高的灵敏度
• 能够检测小螺距齿轮齿
• 直流（零速）运行
• 精确相移的正弦/余弦信号输出
• 优良的热稳定性
• 对环境磁场有良好的免疫力
• 紧凑的超薄包
• 轮齿运动、速度和方向感测
• 线性和转速传感
• 线性和旋转位置传感
• 线性磁秤
• 磁编码器
• 紧凑型超薄封装
• 齿轮齿的运动，速度和方向传感

技术参数