参数资料
型号: AS5245-HQFT
厂商: ams
文件页数: 28/32页
文件大小: 0K
描述: IC ENCODER PROG 32-QFN
应用说明: AS5000 Series Magnet Selection Guide
AS5000 Series Magnets for Extended Vertical Range
标准包装: 4,000
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: 正交,带刻度角(增量)
特点: 可编程
工作温度: -40°C ~ 150°C
封装/外壳: 32-VQFN 裸露焊盘
供应商设备封装: 32-QFN(7x7)
包装: 带卷 (TR)
AS5245
Data Sheet - A p p l i c a t i o n I n f o r m a t i o n
Timing Tolerance over Temperature. The internal RC oscillator is factory trimmed to ±5%. Over temperature, this tolerance may increase
to ±10%. Generally, the timing tolerance has no influence in the accuracy or resolution of the system, as it is used mainly for internal clock
generation. The only concern to the user is the width of the PWM output pulse, which relates directly to the timing tolerance of the internal
oscillator. This influence, however, can be cancelled by measuring the complete PWM duty cycle instead of just the PWM pulse.
9.7 AS5245 Differences to AS5045
All parameters are according to AS5045 data sheet except for the parameters shown below:
Table 14. Difference Between AS5245 and AS5045
Building Block
Resolution
Ambient temperature range
Data length
Pins 1 and 2
Incremental encoder
AS5245
12bits, 0.088o/step.
-40oC to +150oC
read: 18bits
(12bits data + 6 bits status)
OTP write: 18 bits
(12bits zero position + 6 bits mode selection)
MagINCn, MagDECn: same feature as AS5045,
additional OTP option for red-yellow-green magnetic
range
Pin3 (DTest1_A); Pin 4 (DTest2_B); Pin 6 (Mode_Index)
2x1024 ppr (12-bit)
2x256 ppr low-jitter (10-bit)
AS5045
12bits, 0.088o/step.
-40oC to +125oC
read: 18bits
(12bits data + 6 bits status)
OTP write: 18 bits
(12bits zero position + 6 bits mode selection)
MagINCn, MagDECn
Not used
Pin 3: not used
Pin 4:not used
Pin 6
MODE_Index pin selects fast or slow mode in the
default configuration. In case of incremental mode, the MODE_Index pin selects fast or slow mode in the
fast mode is selected and the pin is configured as default configuration.
output.
Pin 12
Sampling frequency
Propagation delay
Transition noise
(rms; 1sigma)
OTP programming options
PWM output: frequency selectable by OTP:
1μs / step, 4096 steps per revolution, f=244Hz 2μs/
step, 4096 steps per revolution, f=122Hz
selectable by MODE input pin:
2.5kHz, 10,4kHz
384μs (slow mode)
96μs (fast mode)
0.03 degrees maximum (slow mode)
0.06 degrees maximum (fast mode)
PPTRIM; programming voltage 3.3V – 3.6V <70oC;
3.5V – 3.6V >70oC;
52-bit serial data protocol; CSn, PDIO and CLK
PWM output: frequency selectable by OTP:
1μs / step, 4096 steps per revolution, f=244Hz
2μs/ step, 4096 steps per revolution, f=122Hz
selectable by MODE input pin:
2.5kHz, 10,4kHz
384μs (slow mode)
96μs (fast mode)
0.03 degrees maximum (slow mode)
0.06 degrees maximum (fast mode)
EasyZap; programming voltage 7.3V – 7.5V; Csn;
Prog and CLK; 16-bit (32-bit) serial data protocol;
www.austriamicrosystems.com/AS5245
Revision 1.5
27 - 31
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