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| 型号： | AS5245 DB |
| 厂商： | ams |
| 文件页数： | 13/32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 |
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AS5245
Data Sheet - D e t a i l e d D e s c r i p t i o n
8.2.2
Z-axis Range Indication (Push Button Feature, Red/Yellow/Green Indicator)
The AS5245 provides several options of detecting movement and distance of the magnet in the Z-direction. Signal indicators MagINCn and
MagDECn are available both as hardware pins (pins #1 and 2) and as status bits in the serial data stream (see Figure 5) . Additionally, an OTP
programming option is available with bit MagCompEn that enables additional features:
In the default state, the status bits MagINC, MagDec and pins MagINCn, MagDECn have the following function:
Table 8. Magnetic Field Strength Red-Yellow-Green Indicator (OTP option)
Status Bits
Hardware Pins
OPT: Mag CompEn = 1 (Red-Yellow-Green Programming Option)
Mag
INC
0
1
1
Mag
DEC
0
1
1
LIN
0
0
1
Mag
INCn
Off
On
On
Mag
DECn
Off
Off
On
Description
No distance change
Magnetic input field OK (GREEN range, ~45…75mT)
YELLOW range: magnetic field is ~ 25…45mT or ~75…135mT. The AS5245
may still be operated in this range, but with slightly reduced accuracy.
RED range: magnetic field is ~<25mT or >~135mT. It is still possible to
operate the AS5245 in the red range, but not recommended.
All other combinations
n/a
n/a
Not available
Note: Pin 1 (MagINCn) and pin 2 (MagDECn) are active low via. open drain output and require an external pull-up resistor. If the magnetic
field is in range, both outputs are turned off.
The two pins may also be combined with a single pull-up resistor. In this case, the signal is high when the magnetic field is in range. It is low in all
other cases (see Table 8) .
8.2.3
Incremental Mode
The AS5245 has an internal interpolator block. This function is used if the input magnetic field is too fast and a code position is missing. In this
case an interpolation is done.
With the OTP bits OutputMd0 and OutputMd1 a specific mode can be selected. For the available pre-programmed incremental versions (10bit
and 12bit), these bits are set during test at austriamicrosystems. These settings are permanent and can not be recovered.
A change of the incremental mode (WRITE command) during operation could cause problems. A power-on-reset in between is recommended.
During operation in incremental mode it is recommended setting CSn = High, to disable the SSI-Interface.
Table 9. Incremental Resolution
DTest1_A
Mode
Description
Output
Md1
Output
Md0
Resolution
and
DTest2_B
Index Width
Pulses
Default mode
AS5245 function DTEST1_A and
DTEST2_B are not used. The
Mode_Index pin is used for selection of
the decimation rate (low speed/high
speed).
0
0
10 bit
Incremental
mode
(low DNL)
12 bit
Incremental
mode (high
DNL)
DTEST1_A and DTEST2_B are used as
A and B signal. In this mode the
Mode_Index Pin is switched from input
to output and will be the Index Pin. The
decimation rate is set to 64 (fast mode)
and cannot be changed from external.
0
1
1
0
10
12
256
1024
1/3
LSB
Sync mode
In this mode a control signal is switched
to DTEST1_A and DTEST2_B .
1
1
www.austriamicrosystems.com/AS5245
Revision 1.5
12 - 31
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AS5245-HMFM | 功能描述:IC ENCODER ROTARY 32-QFN 制造商:ams 系列:汽车级，AEC-Q100 零件状态:有效 编码器类型:磁性 输出类型:正交（增量） 每转脉冲数:- 电压 - 电源:3 V ~ 3.6 V，4.5 V ~ 5.5 V 致动器类型:外磁铁，不含 棘爪:无 内置开关:无 安装类型:表面贴装 朝向:- 端子类型:SMD（SMT）接片 旋转寿命（最少次数）:- 标准包装:1 |
| AS5245-HMFP | 功能描述:IC ENCODER ROTARY 32QFN 制造商:ams 系列:汽车级，AEC-Q100 零件状态:有效 编码器类型:磁性 输出类型:正交（增量） 每转脉冲数:- 电压 - 电源:3 V ~ 3.6 V，4.5 V ~ 5.5 V 致动器类型:外磁铁，不含 棘爪:无 内置开关:无 安装类型:表面贴装 朝向:- 端子类型:SMD（SMT）接片 旋转寿命（最少次数）:- 标准包装:4,000 |
| AS5245HQFT | 制造商:ams 功能描述:QFN 32 |
| AS5245-HQFT | 功能描述:IC ENCODER PROG 32-QFN RoHS:是 类别:传感器，转换器 >> 磁性 - 霍尔效应，数字式开关，线性，罗盘 (IC) 系列:- 标准包装:1 系列:- 传感范围:20mT ~ 80mT 类型:旋转 电源电压:4.5 V ~ 5.5 V 电流 - 电源:15mA 电流 - 输出（最大）:- 输出类型:数字式，PWM，8.5 位串行 特点:可编程 工作温度:-40°C ~ 150°C 封装/外壳:20-SSOP（0.209"，5.30mm 宽） 供应商设备封装:20-SSOP 包装:Digi-Reel® 其它名称:AS5132-HSST-500DKR |
| AS5245HQFT500 | 制造商:ams 功能描述:T&R / QFN 32 |
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