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| 型号： | AS5311 DB |
| 厂商： | ams |
| 文件页数： | 19/29页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL FOR AS5311 |
| 标准包装： | 1 |
| 传感器类型： | 磁性，线性位置 |
| 接口： | USB/串行 |
| 电源电压： | 3.3V，5V |
| 嵌入式： | 是，MCU，8 位 |
| 已供物品： | 板 |
| 已用 IC / 零件： | AS5311 |
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AS5311
Datasheet - A p p l i c a t i o n I n f o r m a t i o n
8.1 Magnetization
The AS5311 accepts magnetic multi-pole strip or ring magnets with a pole length of 1.0mm. Recommended magnet materials include plastic or
rubber bonded ferrite or Neodymium magnets.
It is not recommended to use the AS5311 with other pole lengths as this will create additional non-linearities.
Figure 12. Additional Error from Pole Length Mismatch
AS5311 Systematic Linearity Error Caused by Pole
Length Deviation
70.00
60.00
50.00
Error [μm]
Error [μm]
40.00
30.00
20.00
10.00
0.00
750
800
850
900
950
1000 1050 1100 1150 1200 1250
Pole Length [μm]
Figure12showstheerrorcausedbyamismatchofpolelength.Notethatthiserrorisanadditionalerrorontopofthechip-internalINLandDNL
errors (see Electrical System Specifications on page 8) . For example, when using a multi-pole magnet with 1.2mm pole length instead of 1.0mm,
the AS5311 will provide 1024 incremental steps or 4096 absolute positions over 2.4mm, but with an additional linearity error of up to 50μm.
The curvature of ring magnets may cause linearity errors as well due to the fact that the Hall array on the chip is a straight line while the poles on
the multi-pole ring are curved. These errors decrease with increasing ring diameter. It is therefore recommended to keep the ring diameter
measured at the location of the Hall array at 20mm or higher.
8.2 Position of the Index Pulse
An index pulse is generated when the North and South poles are placed over the Hall array as shown in Figure 14 .
The incremental output count increases when the magnet is moving to the left, facing the chip with pin#1 at the lower left corner (see Figure 14 -
top drawing). At the same time, the absolute position value increases. Likewise, the position value decreases when the magnet is moved in the
opposite direction.
www.ams.com/AS5311
Revision 1.12
19 - 29
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相关代理商/技术参数 |
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| AS5311-TS_EK_AB | 功能描述:AS5311 - Magnetic, Linear Position Sensor Evaluation Board 制造商:ams 系列:- 零件状态:有效 传感器类型:磁性，线性位置 感应范围:- 接口:串行 灵敏度:- 电压 - 电源:3 V ~ 5.5 V 嵌入式:否 所含物品:板 使用的 IC/零件:AS5311 标准包装:1 |
| AS5311-TS_EK_DB | 功能描述:AS5311 - Magnetic, Linear Position Sensor Evaluation Board 制造商:ams 系列:- 零件状态:有效 传感器类型:磁性，线性位置 感应范围:- 接口:USB 灵敏度:- 电压 - 电源:3.3V，5V 嵌入式:是，MCU，8 位 所含物品:板 使用的 IC/零件:AS5311 标准包装:1 |
| AS53160FLF | 制造商:TT Electronics / IRC 功能描述:AS53160FLF |
| AS53160HLF | 制造商:TT Electronics / IRC 功能描述:AS53160HLF |
| AS53160JLF | 制造商:TT Electronics / IRC 功能描述:AS53160JLF |
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