TMC4671 Datasheet • IC Version V1.00 | Document Revision V1.04 • 2018-Dec-11
39 / 157
4.7.8 Analog Hall and Analog Encoder Interface (SinCos of 0° 90° or 0° 120° 240°)
An analog encoder interface is part of the decoder engine. It is able to handle analog position signals of 0
°
and 90° and of 0° 120° 240°. The analog decoder engine adds offsets and scales the raw analog encoder
signals, while also calculating the electrical angle PHI_E from these analog position signals by an ATAN2
algorithm.
SIN/COS Hall
Track SIN
Track COS
SIN/COS with 10 PPR
Track SIN
Track COS
3-phase Analog Hall
Track 0°
Track 120°
Track 240°
Figure 20: Analog Encoder (AENC) signal waveforms
An individual signed offset is added to each associated raw ADC channel and scaled by its associated
scaling factors according to
AENC_VALUE = (AENC_RAW + AENC_OFFSET) · AENC_SCALE
(19)
In addition, the AENC_OFFSET is for conversion of unsigned ADC values into signed ADC values as required
for the FOC.
©2018 TRINAMIC Motion Control GmbH & Co. KG, Hamburg, Germany
Terms of delivery and rights to technical change reserved.
Download newest version at www.trinamic.com
TRINAMIC [ TRINAMIC MOTION CONTROL GMBH & CO. KG. ]
