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| 型号： | AS5045-ASST |
| 厂商： | ams |
| 文件页数： | 30/34页 |
| 文件大小： | 0K |
| 描述： | IC ENCODER PROG 12-BIT 16-SSOP |
| 应用说明： | AS5000 Series Magnet Selection Guide AS5000 Series Magnets for Extended Vertical Range |
| 标准包装： | 1 |
| 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，12 位串行 |
| 特点： | 可编程 |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 16-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 16-SSOP |
| 包装： | 标准包装 |
| 产品目录页面： | 804 (CN2011-ZH PDF) |
| 其它名称： | AS5045-ASSTDKR |
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AS5045
Data Sheet
17.4 Propagation Delays
The propagation delay is the delay between the time that the sample is taken until it is converted and available as
angular data. This delay is 96μs in fast mode and 384μs in slow mode.
Using the SSI interface for absolute data transmission, an additional delay must be considered, caused by the
asynchronous sampling (0 … 1/f sample ) and the time it takes the external control unit to read and process the angular
data from the chip (maximum clock rate = 1MHz, number of bits per reading = 18).
17.4.1 Angular Error Caused by Propagation Delay
A rotating magnet will cause an angular error caused by the output propagation delay.
This error increases linearly with speed:
e sampling , = rpm ? 6 * prop . delay
where
e sampling = angular error [°]
rpm = rotating speed [rpm]
prop.delay = propagation delay [seconds]
Note: since the propagation delay is known, it can be automatically compensated by the control unit processing the
data from the AS5045.
17.5 Internal Timing Tolerance
The AS5045 does not require an external ceramic resonator or quartz. All internal clock timings for the AS5045 are generated by
an on-chip RC oscillator. This oscillator is factory trimmed to ± 5% accuracy at room temperature ( ± 10% over full temperature
range). This tolerance influences the ADC sampling rate and the pulse width of the PWM output:
Absolute output; SSI interface:
A new angular value is updated every 96μs (typ.) in fast mode and every 384μs (typ.) in slow mode.
PWM output:
A new angular value is updated every 400μs (typ.).
The PWM pulse timings T on and T off also have the same tolerance as the internal oscillator (see above).
If only the PWM pulse width T on is used to measure the angle, the resulting value also has this timing tolerance.
However, this tolerance can be cancelled by measuring both T on and T off and calculating the angle from the duty
cycle (see section 9):
( t on off t ) ? 1
Position =
t on ? 4097
+
www.austriamicrosystems.com
Revision 1.7
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AS5045ASSU | 制造商:AMS 功能描述:IC MAGNETIC ROTARY ENCODER 12BIT SSOP16 制造商:AMS 功能描述:IC, MAGNETIC ROTARY ENCODER 12BIT SSOP16 制造商:AMS 功能描述:IC, MAGNETIC ROTARY ENCODER 12BIT SSOP16; IC Function:Encoder IC; Brief Features:360 Contactless High Resolution Angular Position Encoding, Two 12-bit Absolute Output; Supply Voltage Min:3V; Supply Voltage Max:3.6V; No. of Pins:16 ;RoHS Compliant: Yes |
| AS5045-ASSU | 功能描述:板机接口霍耳效应/磁性传感器 RoHS:否 制造商:Honeywell 类型:Bipolar Hall-Effect Digital Position Sensor 工作电源电压:3 V to 24 V 电源电流:3.5 mA 最大输出电流:20 mA 工作点最小值/最大值:5 G, 55 G 最小/最大释放点（Brp）:- 55 G, - 5 G 最大工作温度:+ 150 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23 |
| AS5045B | 制造商:AMSCO 制造商全称:austriamicrosystems AG 功能描述:12-Bit Programmable Magnetic Position Sensor |
| AS5045B-ASSM | 制造商:ams 功能描述:T&R / SSOP 16 |
| AS5045B-ASST | 制造商:ams 功能描述:T&R / SSOP 16 |
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