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参数资料
| 型号： | AS5311 DB |
| 厂商： | ams |
| 文件页数： | 13/29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 - D e t a i l e d D e s c r i p t i o n
If CLK is low at the falling edge of CSn, the first 12 bits represent the magnitude information, which is proportional to the magnetic field strength.
This information can be used to detect the presence and proper distance of the magnetic strip by comparing it to a known good value (depends
on the magnet material and distance).
The automatic gain control (AGC) maintains a constant MAGnitude value of 3F hex (=“green” range). If the MAG value is <>3F hex, the AGC is
out of the regulating range (“yellow” or “red” range). See Table 13 for more details. For AGC algorithm only M11: M4 of the magnitude are used.
A value of zero or close to zero indicates a missing magnet.
Figure 7. Synchronous Serial Interface with Magnetic Field Strength Data
CSn
T CLK/2
t CSn
t CLK FE
CLK
1
8
18
1
DO
M11
M10
M9
M8
M7
M6
M5
M4
M3
M2
M1
M0
OCF COF
LIN
Mag
INC
Mag
DEC
Even
PAR
D11
t DO active
t DO valid
Magnetic field strength data
Status Bits
t DO Tristate
If CSn changes to logic low, Data Out (DO) will change from high impedance (tri-state) to logic high and the read-out will be initiated.
?? After a
minimum time t CLK FE , data is latched into the output shift register with the first falling edge of CLK.
?? Each subsequent rising CLK edge shifts out one bit of data.
?? The
serial word contains 18 bits, if CLK is high at the falling edge of CSn (see Figure 6) , the first 12 bits are the absolute distance informa-
tion D[11:0], the subsequent 6 bits contain system information, about the validity of data such as OCF, COF, LIN, Parity and Magnetic Field
status (increase/decrease).
?? If CLK is low at the falling edge of CSn, the first 12 bits contain
(see Figure 7) .
the magnitude information and the subsequent bits contain the status bits
?? A subsequent measurement is initiated by a “high” pulse at CSn with a
minimum duration of t CSn .
Data Contents:
D11:D0 absolute linear position data (MSB is clocked out first)
M11:M0 magnitude / magnetic field strength information (MSB is clocked out first)
OCF (Offset Compensation Finished), logic high indicates the finished Offset Compensation Algorithm. If this bit is not set, the data at D11:D0
(likewise M11:M0) may be invalid.
COF (Cordic Overflow), logic high indicates an out of range error in the CORDIC part. When this bit is set, the data at D11:D0 (likewise M11:M0)
is invalid.
This alarm may be resolved by bringing the magnet within the X-Y-Z tolerance limits.
LIN (Linearity Alarm), logic high indicates that the input field generates a critical output linearity.
When this bit is set, the data at D11:D0 may still be used, but can contain invalid data. This warning can be resolved by increasing the magnetic
field strength.
Even Parity bit for transmission error detection of bits 1…17 (D11…D0, OCF, COF, LIN, MagINC, MagDEC)
www.ams.com/AS5311
Revision 1.12
13 - 29
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 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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