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參數資料
| 型號： | AS5140H-ASST |
| 廠商： | ams |
| 文件頁數： | 17/38頁 |
| 文件大小： | 1279K |
| 描述： | IC ENCODER ROTARY 10BIT 16-SSOP |
| 標準包裝： | 2,000 |
| 傳感范圍： | 45mT ~ 75mT |
| 類型： | 線性，旋轉編碼器 - 可編程 |
| 電源電壓： | 3 V ~ 3.6 V，4.5 V ~ 5.5 V |
| 電流 - 電源： | 21mA |
| 電流 - 輸出（最大）： | 4mA |
| 輸出類型： | 數字式，PWM，10 位串行 |
| 特點： | 可編程 |
| 工作溫度： | -40°C ~ 150°C |
| 封裝/外殼： | * |
| 供應商設備封裝： | * |
| 包裝： | * |
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www.austriamicrosystems.com/AS5140H
Revision 1.4
16 - 37
AS5140H
Data Sheet - Detailed Description
Incremental Power-up Lock Option. After power-up, the incremental outputs can optionally be locked or unlocked, depending on the
status of the CSn pin:
CSn = low at power-up: CSn has an internal pull-up resistor and must be externally pulled low (
). If Csn is low at power-up,
the incremental outputs (A, B, Index) will be high until the internal offset compensation is finished. This unique state (A=B=Index = high)
may be used as an indicator for the external controller to shorten the waiting time at power-up. Instead of waiting for the specified maximum
power up-time (0), the controller can start requesting data from the AS5140H as soon as the state (A=B=Index = high) is cleared.
CSn = high or open at power-up: In this mode, the incremental outputs (A, B, Index) will remain at logic high state, until CSn goes low or a
low pulse is applied at CSn. This mode allows intentional disabling of the incremental outputs until, for example the system microcontroller
is ready to receive data.
7.2.3 Incremental Output Hysteresis
To avoid flickering incremental outputs at a stationary magnet position, a hysteresis is introduced. In case of a rotational direction change, the
incremental outputs have a hysteresis of 2 LSB. Regardless of the programmed incremental resolution, the hysteresis of 2 LSB always
corresponds to the highest resolution of 10 bit. In absolute terms, the hysteresis is set to 0.704 degrees for all resolutions. For constant rotational
directions, every magnet position change is indicated at the incremental outputs (see Figure 9). For example, if the magnet turns clockwise from
position x+3 to x+4 , the incremental output would also indicate this position accordingly. A change of the magnets rotational direction back to
position x+3 means that the incremental output still remains unchanged for the duration of 2 LSB, until position x+2 is reached. Following this
direction, the incremental outputs will again be updated with every change of the magnet position.
Figure 9. Hysteresis Window for Incremental Outputs
7.3 Pulse Width Modulation (PWM) Output
The AS5140H provides a pulse width modulated output (PWM), whose duty cycle is proportional to the measured angle:
Position =
(EQ 2)
The PWM frequency is internally trimmed to an accuracy of ?% (?0% over full temperature range). This tolerance can be cancelled by
measuring the complete duty cycle as shown above.
R
ext
5k?/DIV>
d
Clockwise Direction
Counterclockwise Direction
X+1 X+2 X+3 X+4 X+5
X
Magnet Position
X
X+1
X+2
X+3
X+4
Hysteresis:
0.7?/DIV>
Incremental
Output
Indication
t
on
1025
?/DIV>
t
on
t
off
+
(
)
---------------- -------- -
1
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相關代理商/技術參數 |
參數描述 |
|---|---|
| AS5140H-ASST-500 | 功能描述:板機接口霍耳效應/磁性傳感器 RoHS:否 制造商:Honeywell 類型:Bipolar Hall-Effect Digital Position Sensor 工作電源電壓:3 V to 24 V 電源電流:3.5 mA 最大輸出電流:20 mA 工作點最小值/最大值:5 G, 55 G 最小/最大釋放點（Brp）:- 55 G, - 5 G 最大工作溫度:+ 150 C 安裝風格:SMD/SMT 封裝 / 箱體:SOT-23 |
| AS5140HASSU | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:10-Bit 360 Programmable Magnetic Rotary Encoder For High Ambient Temperatures |
| AS5140H-ASSU | 功能描述:IC ENCODER PROG 10-BIT 16-SSOP RoHS:是 類別:傳感器，轉換器 >> 磁性 - 霍爾效應，數字式開關，線性，羅盤 (IC) 系列:- 標準包裝:1 系列:- 傳感范圍:20mT ~ 80mT 類型:旋轉 電源電壓:4.5 V ~ 5.5 V 電流 - 電源:15mA 電流 - 輸出（最大）:- 輸出類型:數字式，PWM，8.5 位串行 特點:可編程 工作溫度:-40°C ~ 150°C 封裝/外殼:20-SSOP（0.209"，5.30mm 寬） 供應商設備封裝:20-SSOP 包裝:Digi-Reel® 其它名稱:AS5132-HSST-500DKR |
| AS5140H-DB | 制造商:ams 功能描述:AS5140H Demo Board |
| AS5140H-PB | 制造商:ams 功能描述:AS5140H Progamming Board |
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