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参数资料
| 型号： | AS5030 AB |
| 厂商： | ams |
| 文件页数： | 35/44页 |
| 文件大小： | 0K |
| 描述： | BOARD ADAPTER AS5030 |
| 标准包装： | 1 |
| 传感器类型： | 磁性，旋转位置 |
| 传感范围： | 360° |
| 接口： | 串行 |
| 电源电压： | 5V |
| 嵌入式： | 否 |
| 已供物品： | 板 |
| 已用 IC / 零件： | AS5030 |
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AS5030
Datasheet - A p p l i c a t i o n I n f o r m a t i o n
Figure 29 shows a typical example of an error curve over a full turn of 360° at a given X-Y displacement. The curve includes the quantization
error, transition noise and the system error. The total error is ~2.2° peak/peak (± 1.1°).
The sawtooth-like quantization error (see also Figure 28 ) can be reduced by averaging, provided that the magnet is in constant motion and there
are an adequate number of samples available. The solid bold line in Figure 29 shows the moving average of 16 samples. The INL (intrinsic non-
linearity) is reduced to from ~± 1.1° down to ~± 0.3°. The averaging however, also increases the total propagation delay, therefore it may be
considered for low speeds only or adaptive; depending on speed (see Position Error over Speed on page 30) .
8.8.2
Vertical Distance of the Magnet
The chip-internal automatic gain control (AGC) regulates the input signal amplitude for the tracking-ADC to a constant value. This improves the
accuracy of the encoder and enhances the tolerance for the vertical distance of the magnet.
Figure 30. Typical Curves for Vertical Distance Versus ACG Value on Several Untrimmed Samples
Linearity and AGC vs Airgap
64
56
48
40
32
24
16
8
0
2,2
2,0
1,8
1,6
1,4
1,2
1,0
0
500
1000
1500
2000
2500
[μm]
Airgap [mm]
sample#1
sample#2
sample#3
sample#4
Linearity [°]
As shown in Figure 30 , the AGC value (left Y-axis) increases with vertical distance of the magnet.
Consequently, it is a good indicator for determining the vertical position of the magnet, for example as a push-button feature, as an indicator for a
defective magnet or as a preventive warning (e.g. for wear on a ball bearing etc.) when the nominal AGC value drifts away.
If the magnet is too close or the magnetic field is too strong, the AGC will be reading 0,
If the magnet is too far away (or missing) or if the magnetic field is too weak, the AGC will be reading 63 (3F H ).
The AS5030 will still operate outside the AGC range, but the accuracy may be reduced as the signal amplitude can no longer be kept at a
constant level.
The linearity curve in Figure 30 (right Y-axis) shows that the accuracy of theAS5030 is best within the AGC range, even slightly better at small
airgaps (0.4mm ~ 0.8mm).
At very short distances (0mm ~ 0.1mm) the accuracy is reduced, mainly due to nonlinearities in the magnetic field.
At larger distances, outside the AGC range (~2.0mm ~ 2.5mm and more) the accuracy is still very good, only slightly decreased from the nominal
accuracy.
Since the field strength of a magnet changes with temperature, the AGC will also change when the temperature of the magnet changes. At low
temperatures, the magnetic field will be stronger and the AGC value will decrease. At elevated temperatures, the magnetic field will be weaker
and the AGC value will increase.
www.ams.com/AS5030
Revision 2.4
35 - 44
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相关代理商/技术参数 |
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| AS5030ATST | 制造商:ams 功能描述:T&R / TSSOP 16 |
| AS5030-ATST | 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 |
| AS5030ATSU | 制造商:AMS 功能描述:IC MAGNETIC ROTARY ENCODER 8BIT 16-TSSO 制造商:AMS 功能描述:IC, MAGNETIC ROTARY ENCODER 8BIT 16-TSSO 制造商:AMS 功能描述:IC, MAGNETIC ROTARY ENCODER 8BIT 16-TSSOP; IC Function:Encoder IC; Brief Features:360 Contactless Angular Position Encoding, Two Digital 8-bit Absolute Output; Supply Voltage Min:4.5V; Supply Voltage Max:5.5V; No. of Pins:16 ;RoHS Compliant: Yes |
| AS5030-ATSU | 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 |
| AS5030-DB | 功能描述:磁传感器开发工具 AS5030 Demo Board RoHS:否 制造商:Maxim Integrated 工具用于评估: 接口类型: 工作电压: |
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