iC-MH8
12 BIT HALL ENCODER
The iC-MH8 is an integrated Hall encoder for sensing the
angular position of a diametral magnet.
The amplified Hall voltages are available as complementary
analog sine and cosine signals with regulated 1 Vpp differential
amplitude.
The interpolator can be set to binary interpolation factors from
1 to 1024 to achieve up to 4096 angle steps per revolution.
ABZ quadrature signals up to a rate of 2 MHz are available at
the incremental outputs, permitting 120 000 rpm at the highest
resolution. The position of the index pulse Z is adjustable.
For block commutation pins U, V and W provide three phase-
shiftet output signals. The starting angle is freely definable over
a revolution. Brushless motors with 1, 2 or 4 pole pairs of poles
can be operated. The incremental and commutation outputs are
RS422 compatible and can be adjusted in output current and
slew rate.
Using the serial interface the output data can be transmitted
serially and allows also access to the internal memory
of iC-MH8. The configuration and internal parameters can then
be stored permanently in a zapping diode based ROM.
Features
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Automatic signal conditioning with manual fine control
Analog Output Drivers (1 Vpp to 100
Ω)
12 bit realtime interpolation for 120 000 rpm:
Binary factors of 1, 2, 4, ..., 256, 512, 1024
Commutation signals for 2, 4 and 8 pole motors
Independent zero positions for ABZ or UVW
Incremental output frequency of up to 2 MHz
RS422 output driving stages for ABZ and UVW
BiSS C Int. for singleturn position and programming
Integrated Zapping diodes for permanent storage
Device setup and OEM data programmable
Error output (loss of magnet, frequency error),
error codes accessible via BiSS interface
Extended temperature range -40 °C to +125 °C
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Applications
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Electronic commutation of brushless motors
Contactless rotary switch / digital potentiometer
Absolute and incremental rotary encoders
Motor feedback / Resolver replacement
Sine / cosine outputs
+ 5V
VPA
PCOUT NCOUT
PSOUT NSOUT
+ 5V
VPD
A
B
Binary interpolation factors
1, 2, 4, ... 256, 512, 1024
A
B
Z
B
S
N
Test
PTE
B
B
B
CONVERSION
LOGIC
Z
TEST
HALL SENSOR
SINE-TO-DIG
RS422
SIN + COS
2
2
U
V
U
V
W
0°
Two, four and eight pole
commutating signals
120°
240°
Loss of magnet,
frequency error
NERR
AMPLITUDE
CORRECTION
PHASE
SHIFT
W
INCR INTERFACE
ERROR MONITOR
AMPL CONTROL
SINE-TO-COM
MA
SLO
0x00
0x0F
0x10
0x1F
0x77
0x7F
iC-MH8
16 Byte ZROM
ZAP CONTROL
Analog output signals
PSOUT
NSOUT
0.5 V
Data,
Programming
SLI
SERIAL
INTERFACE
VZAP
RAM
VNA1
BIAS/VREF
VND
ZAPROM
VNA2
C061010-3
Programming
Voltage
0°
NCOUT
PCOUT
180°
Angular position
a
360°
Am Kuemmerling 18 • D-55294 Bodenheim, Germany
Phone: +49 (6135) 9292-300 • Fax: +49 (6135) 9292-192 • http://www.ichaus.com
ICHAUS [ IC-HAUS GMBH ]
