iC-MHL200
12-BIT linear / rotary
Position Hall Encoder
The iC-MHL200 is an integrated Hall encoder for sensing linear
and rotary magnetic targets with a 2 mm pole pitch. A smallest
linear position increment of 1 µm can be achieved when the
device is operated at 12 bit resolution. The interpolator resolution can be programmed up to a maximum of 4096 increments
per magnetic signal period (equivalent to a 4 mm position shift).
Incremental ABZ quadrature position signals up to a rate of 2
MHz are available on single-ended or differential outputs, permitting at least a linear speed of 8 m/s at 12 bit resolution, and
even higher velocities at a reduced resolution.
The position of the index pulse Z is adjustable within the magnetic signal period. For linear motor applications, one and
twofold UVW commutation signal over a signal period are available. Both incremental and commutation outputs are RS422
compatible and can be configured regarding output drive current and slew rate. Using the serial BiSS interface position data
can be transmitted and iC-MHL200 can be accessed for setup.
The power-on configuration and internal parameters can then
be stored permanently in an on-chip zapping ROM. For position
data readout only, the SSI protocol is also available.
+ 5V
Adjustment, air gap
B
S
B
B
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Automatic signal conditioning with configurable control
12-bit real-time interpolation at 8 m/s velocity
Interpolation factors ×1 to ×128, ×256, ×512, ×1024
Quadrature AB and index Z signal outputs
Z output can be enabled via strobe input ENZ
One and twofold UVW commutation signals
Independent zero position for ABZ or UVW
Incremental AB frequency of up to 2 MHz
RS422 output driving stages for ABZ and UVW
BiSS C interface for position readout and programming
Device setup and OEM data stored into OTP ZAPROM
Open-drain NERR signal (loss of magnet, frequency error)
Error codes accessible via BiSS C interface
Operating temperature range of -40 °C to +125 °C
Applications
•
•
Incremental linear and rotary encoders
Electronic commutation of linear motors
+ 5V
VPD
ENZ
GAIN
VPA
Index enable
Features
B
N
CONVERSION
LOGIC
HALL SENSORS
(manufacture
purpose only)
weak magnetic field,
frequency error
A
A
B
B
Z
Z
SINE-TO-DIG
RS422
PTE
TEST
2
SIN + COS
U
2
AMPLITUDE
CORRECTION
NERR
0x00
MA
SINE-TO-COM
0x77
0x7F
RAM
VNA
W
240°
W
INCR INTERFACE
Internal HALL sensor signals
(available in Test Mode)
PSIN
NSIN
2V
16 Byte ZROM
0x1F
SERIAL
INTERFACE
120°
V
iC-MHL200
0x0F
0x10
SLO
SLI
AMPL CONTROL
PHASE
SHIFT
1x and 2x
commutating signals
0°
U
V
ERROR MONITOR
Data,
Programming
Interpolating factors 1...128,
256, 512, 1024
BIAS/VREF
VND
ZAP CONTROL
ZAPROM
VZAP
Programming
Voltage
PCOS
NCOS
0
(0°)
Am Kuemmerling 18 • D -55294 Bodenheim, Germany
Tel. +49 61 35 / 92 92-30 0 • Fax +49 61 35 / 92 92-19 2 • http://www.ichaus.com
2
Linear position
4
[mm]
(360°)
iC-MHL200
12-BIT Linear / Rotary position hall encoder
Key Specifications
Pin Functions
General
No.
Name
Function
Supply Voltage
5 V +/-10 %
1
SLI
Serial Interface, Data Input
Supply Current, normal mode
power reduction mode
24 mA max.
16 mA max.
2
MA
Serial Interface, Clock Input
3
VPA
+5 V Supply Voltage (analog)
Linear Speed (@ 12 bit)
8 m/s
4
VNA
Ground (analog)
Magnetic Field Strength
20 ... 100 kA/m
5, 6
nc
not connected
Resolution (digital / linear)
12 bit / 1 µm
7
VZAP
Zener Zapping Programming Voltage
Operational Temperature Range
-40 to +125 °C
8
A
Incremental Output A (+NU)
ESD Susceptibility
2 kV (HBM 100 pF, 1.5 kΩ)
9
B
Incremental Output B (+NV)
10
Z
Index Output Z (+NW)
11
VND
Ground (digital)
12
VPD
+5 V Supply Voltage (digital)
13
U
Commutation Output U (+NA)
14
V
Commutation Output V (+NB)
Operating Modes
Output Modes
ABZ and UVW
ABZ and inverted ABZ
UVW and inverted UVW
ABZ and AB period signals
Interpolation Factors
×1 ... ×128, ×256, ×512, ×1024 @ A, B
15
W
Commutation Output W (+NZ)
Commutation Signals UVW
one and two periods every 360°
16
PTE
Test Enable Input
17
NERR
Error output (active low)
18
GAIN
Gain Signal
19
ENZ
Index Z Enable Input
20
SLO
Serial Interface, Data Output
Output Driver Settings
Drive Modes
push-pull (RS422), high-side,
low-side, tristate
Driving Capability
(driving current, rise/fall time,
frequency)
+/- 4 mA, 12 ns, 10 MHz
+/- 60 mA, 12 ns, 10 MHz
+/- 60 mA, 200 ns, 300 kHz
+/- 20 mA, 20 ns, 3 MHz
Application Example
rotating target
Signal Conditioning
controlled to 2 Vpp
×5, ×10, ×15, ×20
×1 ... ×19 (64 steps)
0.91 ... 1.097 (128 steps)
+/- 63 mV in steps of 1 mV
0.17°, 0.35°, 0.7° and 1.4°
adjustable in increments of 1.4°
adjustable in increments of 1.875°
index track
incremental track
0
enable
L2
0
Internal Hall Signal Level
Coarse Gain Selection
Fine Gain (AGC range)
Sin/Cos Amplitude Ratio
Offset Correction Range
Hysteresis ABZ
Zero Position ABZ
Zero Position UVW
SSI Mode
data output to 2 MHz, 13 bit format
BiSS Mode
10 MHz, register access, CRC
M
H
Serial Interface Output
index sensor
Pin Configuration TSSOP20
13
12
D
VN
14
VP
D
15
16
U
W
17
V
ER
R
PT
E
18
N
AI
N
Z
19
G
20
EN
SL
O
A
11
B
Z
ENZ
MHL200
M
H
L2
00
Code...
incremental track
...yyww
7
8
9
10
Z
6
A
5
n.
c.
VZ
AP
4
c.
3
n.
A
M
SL
I
2
VP
A
VN
A
1
B
index track
0
absolute position
This preliminary information is not tantamount to a guarantee of device characteristics. All rights to technical changes reserved.
Am Kuemmerling 18 • D -55294 Bodenheim, Germany
Tel. +49 61 35 / 92 92-30 0 • Fax +49 61 35 / 92 92-19 2 • http://www.ichaus.com
Rev. 1.0