iC-MH8
12 BIT ANGULAR HALL ENCODER
nar y
limi
pre
Rev A0.9, Page 2/25
DESCRIPTION
The iC-MH8 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 of eight pole EC motors. The zero point of
the commutation signals is freely definable in incre-
ments of 5.625° over 360°.
Sine and cosine signals are externally availabe to fa-
cilitate adjustement.
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-MH8 module forms a one-chip encoder. The en-
tire configuration can be stored in the internal pa-
rameter ROM with zapping diodes. The integrated
programming algorithm assumes writing of the ROM
structure.
PACKAGES QFN28 5 x5 mm² to JEDEC MO-220-VHHD-1
PIN CONFIGURATION QFN28 5 x 5mm²
PSOUT NSOUT
nc
28
nc
27
26
25
nc
24
nc
23
W
22
21
20
19
PTE
NERR
VPA
VNA1
SLI
MA
SLO
1
2
3
4
5
6
7
8
nc
9
nc
10
11
12
13
14
V
U
VPD
VND
Z
B
A
MH8
18
17
16
15
C061010-1
nc
PCOUT VZAP
VNA2
NCOUT
PIN FUNCTIONS
No. Name Function
1 PTE Test Enable Pin
2 NERR Error output(active low)
PIN FUNCTIONS
No. Name Function
3 VPA
+5 V Supply Voltage (analog)
4 VNA1
Ground (analog)
5 SLI
Serial Interface, Data Input
6 MA
Serial Interface, Clock Input
7 SLO
Serial Interface, Data Output
8,9 nc
not connected
10 PCOUT Positive Cosine Output
11 NCOUT Negative Cosine Output
12 VZAP
Zener Zapping Programming Voltage
13 VNA2
Ground (analog)
14 nc
not connected
15 A
Incremental A (+NU)
16 B
Incremental B (+NV)
17 Z
Index Z (+NW)
18 VND
Ground (digital)
19 VPD
+5 V Supply Voltage (digital)
20 U
Commutation U (+NA)
21 V
Commutation V (+NB)
22 W
Commutation W (+NZ)
23,24 nc
not connected
25 NSOUT Negative Sine Output
26 PSOUT Positive Sine Output
27,28 nc
not connected
TP
Thermal-Pad
The
Thermal Pad
is to be connected to common ground (VNA1, VNA2, VND) on the PCB. Orientation of the
logo ( MH8 CODE ...) is subject to alteration.
ICHAUS [ IC-HAUS GMBH ]
