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AS5145 数据表(PDF) 1 Page - ams AG |
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AS5145 数据表(HTML) 1 Page - ams AG |
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1 / 36 page  AS5145/AS5145A/AS5145B 12-Bit Programmable Magnetic Rotary Encoder www.austriamicrosystems.com/AS5145 Revision 1.10 1 - 36 Data Sheet 1 General Description The AS5145 is a contact less magnetic rotary encoder for accurate angular measurement over a full turn of 360 degrees. It is a system-on-chip, combining integrated Hall elements, analog front end and digital signal processing in a single device. To measure the angle, only a simple two-pole magnet, rotating over the center of the chip, is required. The magnet may be placed above or below the IC. The absolute angle measurement provides instant indication of the magnet’s angular position with a resolution of 0.0879º = 4096 positions per revolution. This digital data is available as a serial bit stream and as a PWM signal. An internal voltage regulator allows the AS5145 to operate at either 3.3V or 5V supplies. 2 Key Features Contact less high resolution rotational position encoding over a full turn of 360 degrees Two digital 12 bit absolute outputs: - Serial interface - Pulse width modulated (PWM) output Figure 1. AS5145 Automotive Rotary Encoder IC Three incremental outputs Quadrature A/B (10 or 12 bit) and Index output signal (pre- programmed versions available AS5145A for 10 bit and AS5145B for 12 bit) User programmable zero position Failure detection mode for magnet placement, monitoring, and loss of power supply Red-Yellow-Green indicators display placement of magnet in Z- axis Serial read-out of multiple interconnected AS5145 devices using Daisy Chain mode Tolerant to magnet misalignment and gap variations Wide temperature range: - 40ºC to +150ºC Fully automotive qualified to AEC-Q100, grade 0 Small Pb-free package: SSOP 16 (5.3mm x 6.2mm) 3 Applications The device is ideal for industrial applications like contactless rotary position sensing and robotics; automotive applications like steering wheel position sensing, transmission gearbox encoder, head light position control, torque sensing, valve position sensing and replacement of high end potentiometers. Hall Array & Front end Amplifier PWM Interface DSP OTP Register MagINCn DO CSn CLK PDIO Sin Cos Mag Ang MagDECn PWM Absolute Interface (SSI) VDD5V Incremental Interface DTEST1_A DTEST2_B LDO 3.3V VDD3V3 Mux Mode_Index AS5145 |
类似零件编号 - AS5145 |
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类似说明 - AS5145 |
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