iC-MH
12 BIT ANGULAR HALL ENCODER
Rev B1, Page 2/23
DESCRIPTION
The iC-MH 12-bit angular encoder is a position sen-
sor with integrated Hall sensors for scanning a per-
manent magnet. The signal conditioning unit gen-
erates constant-amplitude sine and cosine voltages
that can be used for angle calculation. The resolu-
tion can be programmed up to a maximum of 4,096
angular increments per rotation.
The integrated serial interface also enables the posi-
tion data to be read out to several networked sensors.
And the integrated memory can be written embedded
in the data protocol.
The incremental interface with the pins A, B and Z
supplies quadrature signals with an edge rate of up
to 8 MHz. Interpolation can be carried out with maxi-
mum resolution at a speed of 120,000 rpm. The po-
sition of the index pulse Z is adjustable.
The commutation interface with the signals U, V and
W provides 120° phase-shifted signals for block com-
mutation. The zero point of the commutation signals
is freely definable in increments of 1.875° over 360°.
The commutation signals are available for EC motors
with 1 and 2 pole pairs.
The RS422-compatible outputs of the incremental
interface and the commutation interface are pro-
grammable in the output current and the slew rate.
In conjunction with a rotating permanent magnet, the
iC-MH module forms a one-chip encoder. The entire
configuration can be stored in the internal parameter
ROM with zapping diodes. The integrated program-
ming algorithm assumes writing of the ROM struc-
ture.
PACKAGES QFN28 5 x5 mm² to JEDEC MO-220-VHHD-1
PIN CONFIGURATION QFN28 5 x 5mm²
PIN FUNCTIONS
No. Name Function
1
2
3
4
5
6
7
8-11
12
13,14
15
16
17
18
19
20
21
22
23-28
PTE
NERR
VPA
VNA
SLI
MA
SLO
nc
VZAP
nc
A
B
Z
VND
VPD
U
V
W
nc
TP
Test Enable Pin
Error output(active low)
+5 V Supply Voltage (analog)
Ground (analog)
Serial Interface, Data Input
Serial Interface, Clock Input
Serial Interface, Data Output
not connected
Zener Zapping Programming Voltage
not connected
Incremental A (+NU)
Incremental B (+NV)
Index Z (+NW)
Ground (digital)
+5 V Supply Voltage (digital)
Commutation U (+NA)
Commutation V (+NB)
Commutation W (+NZ)
not connected
Thermal-Pad
MH CODE ...) is subject to
nc
28
nc
27
nc
26
nc
25
nc
24
nc
23
W
22
21
20
19
PTE
NERR
VPA
VNA
SLI
MA
SLO
1
2
3
4
5
6
7
8
nc
9
nc
10
nc
11
nc
12
13
nc
14
nc
V
U
VPD
VND
Z
B
A
MH
18
17
16
15
VZAP
The
Thermal Pad
is to be connected to VNA on the PCB. Orientation of the logo (
alteration.
ICHAUS [ IC-HAUS GMBH ]
