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