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AS5055 Datasheet Preview

AS5055 Datasheet

Low power 12 bit magnetic rotary encoder

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AS5055 12bit rotary encoder
Datasheet
AS5055
Low power 12 bit magnetic rotary encoder
Preliminary datasheet
1 General Description
The AS5055 is a single-chip magnetic rotary encoder IC with low voltage and low power features.
It includes 4 integrated Hall elements, a high resolution ADC and a smart power management controller.
The angle position, alarm bits and magnetic field information are transmitted over a standard 3-wire or 4-wire SPI interface to
the host processor.
The AS5055 is available in a small QFN 16-pin 4x4x0.85mm package and specified over an operating temperature of -20 to
+85°C.
Benefits
Complete system-on-chip
Low power consumption
Low operating voltage
Easy to use SPI interface
Applications
Servo motor control
Input device for battery operated portable devices
Robotics
Key Features
12 bit resolution
Standard SPI interface, 3 or 4 wire
3.0 to 3.6V core voltage, 1.8 to 3.6V peripheral supply voltage
Automatic Wakeup over SPI interface
Interrupt output for conversion complete indication
Low power mode:
< 8mA (avg) @ 620us readout interval
< 5mA (avg) @ 1ms readout interval
< 500µA (avg) @ 10ms readout interval
< 53µA (avg) @ 100ms readout interval
Small size QFN-16 4x4x0.85mm
2 Block diagram
Hall Sensors
Power Management
VDD VSS
AS5055
ADC
Cordic
EN_INT/
INT/
SPI interface
VDDp
Wire MOSI MISO SCK SS/
mode
Revision 1.0
www.austriamicrosystems.com
Page 1 of 19




austriamicrosystems

AS5055 Datasheet Preview

AS5055 Datasheet

Low power 12 bit magnetic rotary encoder

No Preview Available !

AS5055 12bit rotary encoder
Datasheet
3 Pinout
Figure 1: QFN-16 package and pinout (TOP view)
Pin# Symbol Type Description
1 MOSI
DI SPI bus data input
2 MISO
DO SPI bus data output
3 SCK
DI ST SPI Clock Schmitt trigger
4 SS/
DI SPI Slave Select, active LOW
5 tb0
AIO Test pin, leave unconnected
6 tb1
AIO Test pin, leave unconnected
7 tb2
AIO Test pin, leave unconnected
8 tb3
AIO Test pin, leave unconnected
9 Test coil S
Test pin, connect to VSS
10 En_INT/ DI Enable / disable Interrupt
11 VDDp
S Peripheral power supply, 1.8V ~ VDD
12 VDD
S Analog and digital power supply, 3.0 ~ 3.6V
13 VSS
S supply ground
14 Wire_mode DIO 0 = 3 wire mode, 1 = 4 wire mode
15 INT/
DIO Interrupt output. Active LOW, when conversion is finished
16 Test
DIO Test pin, connect to VSS
Epad -
- Center pad not connected
PIN Types:
DI
DI ST
DO
… digital input
… digital input Schmitt trigger
.. digital output, tri-state buffer
DIO …
AIO …
S…
digital I/O
analog I/O
Supply
Revision 1.0
www.austriamicrosystems.com
Page 2 of 19


Part Number AS5055
Description Low power 12 bit magnetic rotary encoder
Maker austriamicrosystems
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AS5055 Datasheet PDF






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