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| 型号： | AS5140 PB |
| 厂商： | ams |
| 文件页数： | 32/38页 |
| 文件大小： | 0K |
| 描述： | BOARD PROGRAM AS5140 |
| 标准包装： | 1 |
| 模块/板类型： | 插槽适配器 |
| 适用于相关产品： | AS5000 编程器，AS5140 |
| 其它名称： | AS5140H PB-ND |
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AS5140H
Data Sheet - D e t a i l e d D e s c r i p t i o n
7.12.6 Temperature
Magnetic Temperature Coefficient. One of the major benefits of the AS5140H, in comparison to linear Hall sensors is that it is much less
sensitive to temperature. While linear Hall sensors require a compensation of the magnet’s temperature coefficient, the AS5140H automatically
compensates for the varying magnetic field strength over temperature. The magnet’s temperature drift does not need to be considered, as the
AS5140H operates with magnetic field strengths from ±45…±75mT.
Example:
A NdFeB magnet has a field strength of 75mT @ -40oC and a temperature coefficient of -0.12% per Kelvin. The temperature change is from -40o
to +150o = 190K. The magnetic field change is: 190 x -0.12% = -22.8%, which corresponds to 75mT at -40oC and 57.9mT at 150oC.
In the above described scenario, the AS5140H can automatically compensate for the change in temperature related field strength. No user
adjustment is required.
Accuracy Over Temperature. The influence of temperature in the absolute accuracy is very low. While the accuracy is ≤ ±0.5o at room
temperature, it may increase to ≤ ±0.9o due to increasing noise at high temperatures.
Timing Tolerance Over Temperature. The internal RC oscillator is factory trimmed to ±5%. Over temperature, this tolerance may increase
to ±10%. Generally, the timing tolerance has no influence in the accuracy or resolution of the system, as it is used mainly for internal clock
generation. The only concern to the user is the width of the PWM output pulse, which relates directly to the timing tolerance of the internal
oscillator. This influence however can be cancelled by measuring the complete PWM duty cycle (see Internal Timing Tolerance on page 30) .
www.austriamicrosystems.com/AS5140H
Revision 1.4
31 - 37
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AS5140-SS_EK_AB | 功能描述:AS5140 - Magnetic, Rotary Position Sensor Evaluation Board 制造商:ams 系列:- 零件状态:有效 传感器类型:磁性，旋转位置 感应范围:360° 接口:串行 灵敏度:- 电压 - 电源:5V 嵌入式:否 所含物品:板 使用的 IC/零件:AS5140 标准包装:1 |
| AS5140-SS_EK_DB | 功能描述:AS5140 - Magnetic, Rotary Position Sensor Evaluation Board 制造商:ams 系列:- 零件状态:有效 传感器类型:磁性，旋转位置 感应范围:360° 接口:USB 灵敏度:- 电压 - 电源:5V USB 或 9V 嵌入式:是，MCU，8 位 所含物品:板，线缆 使用的 IC/零件:AS5140 标准包装:1 |
| AS51430FLF | 制造商:TT Electronics / IRC 功能描述:AS51430FLF |
| AS51430HLF | 制造商:TT Electronics / IRC 功能描述:AS51430HLF |
| AS51430JLF | 制造商:TT Electronics / IRC 功能描述:AS51430JLF |
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