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AS5134 Datasheet(PDF) 2 Page - ams AG

Part # AS5134
Description  360 Step Programmable High Speed Magnetic Rotary Encoder
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Manufacturer  AMSCO [ams AG]
Direct Link  http://www.ams.com
Logo AMSCO - ams AG

AS5134 Datasheet(HTML) 2 Page - ams AG

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AS5134
360 Step Programmable High Speed Magnetic Rotary Encoder
www.austriamicrosystems.com/AS5134
Revision 2.3
1 - 32
Datasheet
1 General Description
The AS5134 is a contactless magnetic rotary encoder for accurate
angular measurement over a full turn of 360º. 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 absolute angle measurement
provides instant indication of the magnet’s angular position with a
resolution of 8.5 bit = 360 positions per revolution. This digital data is
available as a serial bit stream and as a PWM signal. In addition to
the angle information, the strength of the magnetic field is also
available as a 6-bit code.
Data transmission can be configured for 1-wire (PWM), 2-wires
(DCLK, DIO) or 3-wires (DCLK, DIO, CS).
A software programmable (OTP) zero position simplifies assembly
as the zero position of the magnet does not need to be mechanically
aligned.
A Power Down Mode together with fast startup and measurement
cycles allows a very low average power consumption.
2 Key Features

360º contactless angular position encoding

Two digital 360 step (8.5 bit) absolute outputs: Serial interface
and Pulse width modulated (PWM) output

User programmable zero position and sensitivity

High speed: up to 76875 rpm

Direct measurement of magnetic field strength allows exact
determination of vertical magnet distance

Incremental Outputs ABI Quadrature: 90 ppr, step direction:
180ppr, fixed pulse width 360ppr

BLDC Outputs UVW, selectable for 1,2,3,4,5,6 pole pairs

Daisy-Chain mode for cascading of multiple sensors

9-bit multi turn counter

Low power mode with fast startup

Wide magnetic field input range: 20- 80 mT

Wide temperature range: -40ºC to +140ºC

Fully automotive qualified to AEC-Q100

Small Pb-free package: SSOP 20
3 Applications
The AS5134 is suitable for contactless rotary position sensing, rotary
switches (human machine interface), AC/DC motor position control
and Brushless DC motor position control.
Tracking ADC
& Angle
Decoder
Hall Array
&
Frontend
Amplifier
Power Management
OTP
Absolute
Serial
Interface
(SSI)
DIO
PWM
CLK
PROG
CS
PWM Decoder
AGC
C2
Mag
Zero
Pos.
AGC
Angle
Incremental
Interface
Commutation
Interface
U V W A B Index
VDD 5 V
GND
DX
Multiturn
Counter
AS5134
Figure 1. AS5134 Magnetic Rotary Encoder Block Diagram


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