AS5047D Factsheet

DAEC™ Dynamic Angle
Error Compensation
www.ams.com/AS5047D
AS5047D – Magnetic Rotary Position Sensor
We provide innovative
analog solutions to
- DAEC™ Dynamic Angle Error Compensation
- 14-bit resolution
the most challenging
applications in sensor
- 11-bit decimal & binary incremental pulse count
and sensor interfaces,
- Programmable zero position
power management,
and wireless.
General Description
The AS5047D is a high-resolution rotary position sensor for fast absolute angle measurement over a full 360-degree range. This new position sensor is equipped with revolutionary integrated dynamic angle error compensation (DAEC™) with almost 0 latency
and offers a robust design that suppresses the influence of any homogenous external
stray magnetic field. A standard 4-wire SPI serial interface allows a host microcontroller
to read 14-bit absolute angle position data from the AS5047D and to program non-
volatile settings without a dedicated programmer. The resolution of the incremental ABI
interface is programmable with a maximum resolution of 2000 steps / 500 pulses per
revolution in decimal mode and 2048 steps / 512 pules per revolution in binary mode.
The Dynamic Angle Error on the AS5047D device is accurate from ±0.08° at 7,000rpm to
±0.17° at 14,500rpm. It comes in a 14 pin TSSOP package.
Benefits
Features
- Easy to use – saving costs on DSP
- High resolution for motor & position control
- Simple optical encoder replacement
- No programmer needed (via SPI command)
- Versatile choice of the interface
- Lower system costs (no shielding)
- DAEC™ Dynamic angle error compensation
- 14-bit core resolution
-ABI programmable decimal and binary pulse-count:
500, 400, 300, 200, 100, 50, 25, 8, 512, 256 ppr
- Zero position, configuration programmable
-Independent output interfaces: SPI, ABI, UVW, PWM
- Immune to external stray field
DAEC™ Latency Comparison
Applications
- Optical encoder replacement
- Brushless DC motor commutation
- Factory and building automation
-Robotics
- PMSM (permanent magnet synchronous motor)
- Stepper motors closed loop
latency ≈ 0°
No
Compensation
External
Compensation
Integrated
DAEC™
AS5147 Block Diagram
VDD3V3
AS5047D
CSn
SCL
MISO
MOSI
Volatile Memory
SPI
VDD
OTP
LDO
ABI
Hall
Sensors
Analog
Front-End
A/D
AGC
ATAN
(CORDIC)
INTERPOLATOR
Dynamic Angle
Error
Compensation
UWV
A
B
I/PWM
U
V
W / PWM
PWM Decoder
Selectable
on I or W
GND
www.ams.com
[email protected]
© 05/2014 by ams
Subject to change without notice
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ams AG
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Phone +43 3136 500-0 · Fax +43 3136 525-01
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[email protected]
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