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AS5140H

austriamicrosystems AG
Part Number AS5140H
Manufacturer austriamicrosystems AG
Description 10-Bit 360 Programmable Magnetic Rotary Encoder
Published Mar 14, 2010
Detailed Description Data Sheet AS5140H www.DataSheet4U.com 10-Bit 360º Programmable Magnetic Rotary Encoder For High A m b i e n t Te m p ...
Datasheet PDF File AS5140H PDF File

AS5140H
AS5140H

Overview
Data Sheet AS5140H www.
DataSheet4U.
com 10-Bit 360º Programmable Magnetic Rotary Encoder For High A m b i e n t Te m p e r a t u r e s 1 General Description The AS5140H is a contactless magnetic rotary encoder for accurate angular measurement over a full turn of 360º and over an extended ambient temperature range of -40ºC to +150ºC.
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.
35º = 1024 positions per revolution.
This digital data is available as a serial bit stream and as a PWM signal.
Furthermore, a user-programmable incremental output is available.
An internal voltage regulator allows the AS5140H to operate at either 3.
3V or 5V supplies.
The AS5140H is pin-compatible to the AS5040; however it uses lowvoltage OTP programming cells with additional programming options.
2 Key Features Contactless high resolution rotational position encoding over a full turn of 360º Two digital 10-bit absolute outputs: Serial interface and Pulse width modulated (PWM) output Three incremental output modes: Quadrature A/B and Index output signal, Step / Direction and Index output signal, 3-phase commutation for brushless DC motors User programmable zero / index position Failure detection mode for magnet placement monitoring and loss of power supply Rotational speeds up to 10.
000 rpm Pushbutton functionality detects movement of magnet in Z-axis Serial read-out of multiple interconnected AS5140H devices using Daisy Chain mode Fully automotive qualified to AEC-Q100, grade 0 Wide ambient temperature range: -40ºC to +150ºC 3 Applications Figure 1.
AS5140H IC Block Diagram The AS5140H is an ideal solution for automotive applications like engine c...


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