参数资料
型号: AS5140H-ASST
厂商: ams
文件页数: 24/38页
文件大小: 1279K
描述: IC ENCODER ROTARY 10BIT 16-SSOP
标准包装: 2,000
传感范围: 45mT ~ 75mT
类型: 线性,旋转编码器 - 可编程
电源电压: 3 V ~ 3.6 V,4.5 V ~ 5.5 V
电流 - 电源: 21mA
电流 - 输出(最大): 4mA
输出类型: 数字式,PWM,10 位串行
特点: 可编程
工作温度: -40°C ~ 150°C
封装/外壳: *
供应商设备封装: *
包装: *
www.austriamicrosystems.com/AS5140H
Revision 1.4
23 - 37
AS5140H
Data Sheet - Detailed Description
Figure 15. Enabling the Alignment Mode
Figure 16. Exiting Alignment Mode
7.8 3.3V / 5V Operation
The AS5140H operates either at 3.3V ?0% or at 5V ?0%. This is made possible by an internal 3.3V Low-Dropout (LDO) voltage regulator. The
internal supply voltage is always taken from the output of the LDO, meaning that the internal blocks are always operating at 3.3V. For 3.3V
operation, the LDO must be bypassed by connecting VDD3V3 with VDD5V (see Figure 17).
For 5V operation, the 5V supply is connected to pin VDD5V, while VDD3V3 (LDO output) must be buffered by a 2.2...10礔 capacitor, which is
supposed to be placed close to the supply pin (see Figure 17). The VDD3V3 output is intended for internal use only. It must not be loaded with an
external load.
The output voltage of the digital interface I/Os corresponds to the voltage at pin VDD5V, as the I/O buffers are supplied from this pin (see Figure 
17). A buffer capacitor of 100nF is recommended in both cases close to pin VDD5V. 
Note that pin VDD3V3 must always be buffered by a capacitor. It must not be left floating, as this may cause an instable internal 3.3V supply
voltage, which may lead to larger than normal jitter of the measured angle.
Prog
CSn
AlignMode enable
Read-out
via SSI
2祍
min.
2祍
min.
Prog
CSn
exit AlignMode
Read-out
via SSI
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