参数资料
型号: AS5245 DB
厂商: ams
文件页数: 14/32页
文件大小: 0K
描述: BOARD DEMO AS5245
标准包装: 1
传感器类型: 磁性,旋转位置
传感范围: 360°
接口: USB
电源电压: 5V USB 或 9V
嵌入式: 是,MCU,8 位
已供物品: 板,线缆
已用 IC / 零件: AS5245
AS5245
Data Sheet - D e t a i l e d D e s c r i p t i o n
Figure 6. Incremental Output
D Test1_A
D Test2_B
ClockWise
Programmed
Zero Position
1 LSB
Counter ClockWise
Mode_Index
3 LSB
The hysteresis trimming is done at the final test (factory trimming) and set to 4 LSB, related to a 12 bit number.
Incremental Output Hysteresis. To avoid flickering incremental outputs at a stationary magnet position, a hysteresis is introduced. In case
of a rotational direction change, the incremental outputs have a hysteresis of 4 LSB. Regardless of the programmed incremental resolution, the
hysteresis of 4 LSB always corresponds to the highest resolution of 12 bit. In absolute terms, the hysteresis is set to 0.35 degrees for all
resolutions. For constant rotational directions, every magnet position change is indicated at the incremental outputs (see Figure 7) . For example,
if the magnet turns clockwise from position “x+3“ to “x+4“, the incremental output would also indicate this position accordingly. A change of the
magnet’s rotational direction back to position “x+3“ means that the incremental output still remains unchanged for the duration of 4 LSB, until
position “x+2“is reached. Following this direction, the incremental outputs will again be updated with every change of the magnet position.
Figure 7. Hysteresis Window for Incremental Outputs
Incremental
Output
Indication
X +6
X +5
X +4
X +3
X +2
X +1
Hysteresis :
0.35°
X
X
X +1 X +2 X +3 X +4 X +5 X +6
Magnet Position
Clockwise Direction
Counterclockwise Direction
www.austriamicrosystems.com/AS5245
Revision 1.5
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