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| 型号： | AS5045-ASST |
| 厂商： | ams |
| 文件页数： | 31/34页 |
| 文件大小： | 0K |
| 描述： | IC ENCODER PROG 12-BIT 16-SSOP |
| 应用说明： | AS5000 Series Magnet Selection Guide AS5000 Series Magnets for Extended Vertical Range |
| 标准包装： | 1 |
| 传感范围： | 45mT ~ 75mT |
| 类型： | 线性，旋转编码器 - 可编程 |
| 电源电压： | 3 V ~ 3.6 V，4.5 V ~ 5.5 V |
| 电流 - 电源： | 21mA |
| 电流 - 输出（最大）： | 4mA |
| 输出类型： | 数字式，PWM，12 位串行 |
| 特点： | 可编程 |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 16-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 16-SSOP |
| 包装： | 标准包装 |
| 产品目录页面： | 804 (CN2011-ZH PDF) |
| 其它名称： | AS5045-ASSTDKR |
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AS5045
Data Sheet
17.6 Temperature
17.6.1 Magnetic Temperature Coefficient
One of the major benefits of the AS5045 compared 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 coefficients, the AS5045
automatically compensates for the varying magnetic field strength over temperature. The magnet’s temperature drift
does not need to be considered, as the AS5045 operates with magnetic field strengths from ± 45… ± 75mT.
Example:
An NdFeB magnet has a field strength of 75mT @ –40°C and a temperature coefficient of -0.12% per Kelvin. The
temperature change is from –40° to +125° = 165K. The magnetic field change is: 165 x -0.12% = -19.8%, which
corresponds to 75mT at –40°C and 60mT at 125°C.
The AS5045 can compensate for this temperature related field strength change automatically, no user adjustment is
required.
17.7 Accuracy over Temperature
The influence of temperature in the absolute accuracy is very low. While the accuracy is ≤ ± 0.5° at room
temperature, it may increase to ≤± 0.9° due to increasing noise at high temperatures.
17.7.1 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 instead
of just the PWM pulse (see 17.5).
www.austriamicrosystems.com
Revision 1.7
30 – 33
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AS5045ASSU | 制造商:AMS 功能描述:IC MAGNETIC ROTARY ENCODER 12BIT SSOP16 制造商:AMS 功能描述:IC, MAGNETIC ROTARY ENCODER 12BIT SSOP16 制造商:AMS 功能描述:IC, MAGNETIC ROTARY ENCODER 12BIT SSOP16; IC Function:Encoder IC; Brief Features:360 Contactless High Resolution Angular Position Encoding, Two 12-bit Absolute Output; Supply Voltage Min:3V; Supply Voltage Max:3.6V; No. of Pins:16 ;RoHS Compliant: Yes |
| AS5045-ASSU | 功能描述:板机接口霍耳效应/磁性传感器 RoHS:否 制造商:Honeywell 类型:Bipolar Hall-Effect Digital Position Sensor 工作电源电压:3 V to 24 V 电源电流:3.5 mA 最大输出电流:20 mA 工作点最小值/最大值:5 G, 55 G 最小/最大释放点（Brp）:- 55 G, - 5 G 最大工作温度:+ 150 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23 |
| AS5045B | 制造商:AMSCO 制造商全称:austriamicrosystems AG 功能描述:12-Bit Programmable Magnetic Position Sensor |
| AS5045B-ASSM | 制造商:ams 功能描述:T&R / SSOP 16 |
| AS5045B-ASST | 制造商:ams 功能描述:T&R / SSOP 16 |
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