IC-MU_13 Datasheet, PDF (2/59 Pages) IC-Haus GmbH – OFF-AXIS NONIUS ENCODER WITH INTEGRATED HALL SENSORS

iC-MU OFF-AXIS NONIUS ENCODER
WITH INTEGRATED HALL SENSORS
preliminary
Rev B1, Page 2/59
DESCRIPTION
iC-MU is used for magnetic off-axis position definition
with integrated Hall sensors. By scanning two sepa-
rate channels i.e. the master and nonius track the
device can log an absolute position within one me-
chanical revolution. The chip conditions the sensor
signals and compensates for typical signal errors.
The internal 12-bit sine/digital converters generate
two position words that supply high-precision posi-
tion data within one sine-period. The integrated no-
nius calculation engine calculates the absolute posi-
tion within one mechanical revolution and synchro-
nizes this with the master track position word. Posi-
tion data can be transmitted serially, incrementally, or
analog through two ports in various modes of opera-
tion. Commutation signals for brushless DC (BLDC)
motors with up to 16 pole pairs are derived from the
absolute position and supplied through a 3-pin inter-
face.
During startup the device loads a CRC-protected
configuration from an external EEPROM.
After the device has been reset an optional external
multiturn is read in an synchronized with the internal
position data. During operation the position is cycli-
cally checked.
The device offered here is a multifunctional iC that contains in-
tegrated BiSS C interface components. The BiSS C process is
protected by patent DE 10310622 B4 owned by iC-Haus GmbH.
Users benefit from the open BiSS C protocol with a free license
which is necessary when using the BiSS C protocol in conjunc-
tion with this iC.
Download the license at
www.biss-interface.com/bua