IC-MV Datasheet, PDF (2/28 Pages) IC-Haus GmbH – 8-BIT HALL ENCODER

iC-MV 8-BIT HALL ENCODER WITH
CASCADABLE SERIAL INTERFACE
preliminary
Rev B1, Page 2/28
DESCRIPTION
Magnetic encoder iC-MV has been optimized for mul-
titurn measuring systems with up to four dependent
axes and gear reduction ratios of between 1:2 and
1:32.
The sensor generates one sine and one cosine cycle
per revolution of the magnet, enabling the angle to be
clearly determined by the integrated 8-bit sine-to-dig-
ital converter. The internal signal conditioning unit
provides a constant signal level that is independent
of the magnetic field strength, supply voltage, and
temperature. A loss-of-magnet condition can be in-
dicated at output NERR and via the serial interface
(SSI protocol with an optional error bit).
Two to four iC-MVs can be connected in series using
their SLI and SLO ports. During data transmission,
the position data of the fastest turning iC-MV is sent to
the next slowest device. This then corrects its position
data to match that of the previous IC and sends this in
protocol to the next slowest chip. This procedure pro-
vides the SSI master with a multiturn data word that is
synchronized with itself. Furthermore, in place of me-
chanical phase alignment between the gear stages,
iC-MV features an offset register to compensate for
the phase angle electronically.
All inputs and outputs are protected against destruc-
tion by ESD (electrostatic discharge). For test pur-
poses an electric signal coupling is possible at the
integrated Hall sensors (e.g. in the ABZ operation).