ZHCSPN7B March 2023 – August 2024 TMAG6181-Q1
PRODUCTION DATA
- 1
- 1 特性
- 2 應(yīng)用
- 3 說(shuō)明
- 4 Pin Configuration and Functions
- 5 Specifications
-
6 Detailed Description
- 6.1 Overview
- 6.2 Functional Block Diagram
- 6.3 Feature Description
- 6.4 Device Functional Modes
- 7 Application and Implementation
- 8 Device and Documentation Support
- 9 Revision History
- 10Mechanical, Packaging, and Orderable Information
封裝選項(xiàng)
機(jī)械數(shù)據(jù) (封裝 | 引腳)
- DGK|8
散熱焊盤機(jī)械數(shù)據(jù) (封裝 | 引腳)
訂購(gòu)信息
6.3.4.1 AMR Output Parameters
Magnetic Response shows the single-ended output signals as SIN_P, SIN_N, COS_P and COS_N. These signals are ratiometric to the supply voltage (VCC). The common-mode voltage (VCM) of the individual signals is half of the supply voltage (VCC /2). For single-ended signals, VOUT is defined as the difference between the maximum and minimum output voltage for a rotating magnetic field. Use Equation 2 to calculate VOUT_SIN_P.
where
- VSIN_P (max) is the maximum output voltage across the full magnetic angle range
- VSIN_P (min) is minimum output voltage across the full magnetic angle range
Typically, VOUT is around 60% of the supply voltage (VCC). The diagnostic band indicates that the output signals are outside normal operating range and indicates a presence of fault.
Figure 6-7 AMR Differential-Ended Output
SignalsFigure 6-7 shows the differential sine and cosine output signals generated from the corresponding sine and cosine single-ended outputs. Use Equation 3 and Equation 4 to calculate the differential voltages.
The offset of the differential signals is the average of the maximum and minimum voltages of the sine or cosine signals. Use Equation 5 and Equation 6 to calculate the offsets for the sine and cosine signals.
For single-ended signals, the offset is the common-mode voltage (VCM).
Use Equation 7 to calculate the differential offset for sine and cosine channels at any given temperature, TA
where
- VOffset_TC is the temperature drift coefficient of the offset
- VOffset_room is the room temperature offset
Use Equation 8 and Equation 9 to calculate the amplitudes of the differential signals.
Use Equation 10 to calculate the amplitude for single-ended signals.
Amplitude asynchronism refers to the amplitude mismatch error between sine and cosine channels. Use Equation 11 to calculate the amplitude mismatch error.
The sine and cosine output signals are typically out-of-phase by 90 degrees, but if an internal phase error occurs owing to sensor and other on chip circuitry non-idealities, the sine and cosine outputs from the sensor can be different than the ideal 90 degrees. This error is referred to as the orthogonality error. This error is defined as the angle error between the zero crossing of the cosine output and maximum value of the sine outputs.
The hysteresis error (ANGhyst) refers to the largest angle error difference between a clockwise rotation and a counter-clockwise rotation.
For the AMR sensor, the orthogonality error and the hysteresis errors are negligible.