IC-MHL200 Datasheet, PDF (2/33 Pages) IC-Haus GmbH – 12-BIT LINEAR / ROTARY POSITION HALL ENCODER

iC-MHL200
12-BIT LINEAR / ROTARY POSITION HALL ENCODER
Rev C1, Page 2/33
DESCRIPTION
The iC-MHL200 is a magnetic position sensor with
integrated Hall sensors for the scanning of magnetic
tapes and pole wheels featuring a pole pitch of 2 mm.
Moving speeds of up to 8 m/s can be followed even
at highest resolution representing 0.98 µm.
instance, with a magnetic target of 10 pole pairs a
EC-motor with 10 or 20 pole pairs can be commu-
tated depending on chip setting. The zero point of the
commutation signals can be set separately from the
quadrature converter.
The signal conditioning unit generates constant-am-
plitude sine and cosine voltages that are used for re-
al-time tracking sine-to-digital angle conversion. The
resolution can be programmed up to a maximum of
4 096 increments within one magnetic period of 4 mm.
The integrated BiSS interface enables daisy-chain
operation of multiple devices with a synchronous po-
sition capture at all networked sensors. The device’s
memory can also be accessed via the bidirectional
BiSS C protocol without interfering the readout cycles.
The incremental interface with the pins A, B and Z
supplies encoder quadrature signals at an edge rate
of up to 8 MHz. Complementary incremental signals
are available at the U, V, W outputs. The index posi-
tion at the Z output is adjustable and can be gated via
enable input ENZ.
An additional converter operates for commutation sig-
nals UVW. The resolution of the interface depends
on the pole pair count of the magnetic target. For
A/B/Z and U/V/W form RS422-compatible outputs and
are programmable regarding the output’s drive current
and slew rate.
A gain-dependent analog signal is available at the
GAIN output, which can be used to monitor mechani-
cal alignment of the sensor with respect to the mag-
netic target.
All device parameters can be stored in the internal
non-volatile Zener-zapping ROM to allow self-configu-
ration after power on. The required writing algorithm
for programming is executed by the IC itself.
Together with the appropriate magnetic scale or pole
wheel, the iC-MHL200 provides a single-chip solution
for linear and rotary encoders.
The device described here is a multifunctional iC that contains
integrated BiSS C interface components. The BiSS C process is
protected by patent DE 10310622 B4 owned by iC-Haus GmbH
and its application requires the conclusion of a license (free of
charge).
Download the license at www.biss-interface.com/bua