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參數資料
| 型號： | AS5140H-ASST |
| 廠商： | ams |
| 文件頁數： | 13/38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
12 - 37
AS5140H
Data Sheet - Detailed Description
7 Detailed Description
The AS5140H is manufactured in a CMOS standard process and uses a spinning current Hall technology for sensing the magnetic field
distribution across the surface of the chip. The integrated Hall elements are placed around the center of the device, and deliver a voltage
representation of the magnetic field at the surface of the IC. Through Sigma-Delta Analog / Digital Conversion and Digital Signal-Processing
(DSP) algorithms, the AS5140H provides accurate high-resolution absolute angular position information. For this purpose, a Coordinate Rotation
Digital Computer (CORDIC) calculates the angle and the magnitude of the Hall array signals. The DSP is also used to provide digital information
at the outputs MagINCn and MagDECn that indicate movements of the used magnet towards or away from the devices surface. A small low cost
diametrically magnetized (two-pole) standard magnet provides the angular position information (see Figure 18).
The AS5140H senses the orientation of the magnetic field and calculates a 10-bit binary code. This code can be accessed via a Synchronous
Serial Interface (SSI). In addition, an absolute angular representation is given by a Pulse Width Modulated signal at pin 12 (PWM).
Simultaneously, the device also provides incremental output signals. The various incremental output modes can be selected by programming the
OTP mode register bits (see Table 20). As long as no programming voltage is applied to pin Prog, the new setting may be overwritten at any time
and will be reset to default when power is turned off. To make the setting permanent, the OTP register must be programmed. The default setting
is a quadrature A/B mode including the Index signal with a pulse width of 1 LSB. The Index signal is logic high at the user programmable zero
position.
The AS5140H is tolerant to magnet misalignment and magnetic stray fields due to differential measurement technique and Hall sensor
conditioning circuitry.
Figure 4. Typical Arrangement of AS5140H and Magnet
7.1 10-bit Absolute Angular Position Output
7.1.1 Synchronous Serial Interface (SSI)
If CSn changes to logic low, Data Out (DO) will change from high impedance (tri-state) to logic high and the read-out will be initiated.
After a minimum time t
CLK FE
, data is latched into the output shift register with the first falling edge of CLK.
Each subsequent rising CLK edge shifts out one bit of data.
The serial word contains 16 bits; the first 10 bits are the angular information D[9:0], the subsequent 6 bits contain system information about
the validity of data such as OCF, COF, LIN, Parity and Magnetic Field status (increase/decrease).
A subsequent measurement is initiated by a log high pulse at CSn with a minimum duration of t
CSn
.
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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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