IC-MH8 Datasheet, PDF (1/2 Pages) IC-Haus GmbH – 12 BIT HALL ENCODER

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.
Features
• 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
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.
Applications
• Electronic commutation of brushless motors
• Contactless rotary switch / digital potentiometer
• Absolute and incremental rotary encoders
• Motor feedback / Resolver replacement
+ 5V
VPA
Test ^PTE
TEST
Loss of magnet, NERR
frequency error
ERROR MONITOR
Data,
Programming
MA
SLO
SLI
SERIAL
INTERFACE
Sine / cosine outputs
+ 5V
PCOUT NCOUT
S B
B
N ^B
B
HALL SENSOR
2
2
SIN + COS
AMPLITUDE
CORRECTION
AMPL CONTROL
0x00
0x0F
0x10
0x1F
0x77
0x7F
RAM
VNA1
PSOUT NSOUT
CONVERSION
LOGIC
SINE-TO-DIG
PHASE
SHIFT
SINE-TO-COM
VPD
A
B
Z
RS422
U
V
W
INCR INTERFACE
iC-MH8
16 Byte ZROM
Binary interpolation factors
1, 2, 4, ... 256, 512, 1024
A
B
Z
Two, four and eight pole
commutating signals
0°
U
120°
V
240°
W
Analog output signals
PSOUT
NSOUT
0.5 V
BIAS/VREF
VND
ZAP CONTROL
ZAPROM
VNA2
VZAP Programming
Voltage
C061010-3
NCOUT
PCOUT
0°
180°
Angular position a
360°
Am Kuemmerling 18 • D-55294 Bodenheim, Germany
Phone: [phone] • Fax: [phone] • http://www.ichaus.com