iC-MHL200
preliminar y
Rev A1, Page 1/28
12-BIT LINEAR / ROTARY POSITION HALL ENCODER
FEATURES
o
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o
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Realtime system for linear speed up to 8 m/s at full resolution
Absolute position within the magnetic period of 4 mm
12-bit interpolation w. 4096 increments, resolution better 1 µm
Automatic signal offset compensation
Automatic amplitude control for optimum operating point
Programmable features: interpolation factor, hysteresis,
minimum phase distance, zero position and code direction
Electronic index generation with multi-purpose enable input
RS422-compatible A/B/Z outputs for encoder quadrature
signals with up to 8 MHz edge rate
Serial I/O interface for high-speed data output (BiSS/SSI) and
configuration (BiSS)
Zener-Zap ROM for non-volatile setup and OEM data
Signal monitoring: loss of signal, excessive frequency
Single 5 V supply
Extended temperature range of -40 to +125 °C
APPLICATIONS
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Motion control
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Linear position encoders
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Incremental off-axis rotary
encoders
PACKAGES
TSSOP20
BLOCK DIAGRAM
+ 5V
VPA
GAIN
ENZ
+ 5V
VPD
A
B
B
B
B
B
CONVERSION
LOGIC
Z
HALL SENSORS
PTE
TEST
SIN + COS
2
2
SINE-TO-DIG
RS422
U
V
AMPLITUDE
CORRECTION
PHASE
SHIFT
NERR
W
INCR INTERFACE
ERROR MONITOR
AMPL CONTROL
SINE-TO-COM
MA
S LO
S LI
SERIAL
INTERFACE
iC-MHL200
0x00
0x0F
0x10
0x1F
0x77
0x7F
ZAP CONTROL
16 Byte ZROM
V Z AP
RAM
VNA
BIAS/VREF
VND
ZAPROM
Copyright © 2013 iC-Haus
http://www.ichaus.com
iC-MHL200
preliminar y
Rev A1, Page 2/28
12-BIT LINEAR / ROTARY POSITION HALL ENCODER
DESCRIPTION
The iC-MHL200 is a magnetic position sensor with
integrated Hall sensors for the scanning of magnetic
tapes and pole wheels featuring a pole pitch of 2 mm.
Moving speeds of up to 8 m/s can be followed even
at highest resolution representing 0.98 µm.
The signal conditioning unit generates constant-
amplitude sine and cosine voltages that are used
for real-time tracking sine-to-digital angle conversion.
The resolution can be programmed up to a maximum
of 4,096 increments within one magnetic period of
4 mm.
The integrated serial interface enables daisy-chain
operation of multiple devices with a synchronous po-
sition capture at all networked sensors. The device’s
memory can also be accessed via the bidirectional
BiSS C protocol without interfering the readout cy-
cles.
The incremental interface with the pins A, B and Z
supplies encoder quadrature signals at an edge rate
of up to 8 MHz. Complementary incremental signals
are available at the U, V, W outputs. The index po-
sition at the Z output is adjustable and can be gated
via enable input ENZ.
A/B/Z and U/V/W form RS422-compatible outputs
and are programmable regarding the output’s drive
current and slew rate.
A gain-dependent analog signal is available at the
GAIN output, which can be used to monitor mechan-
ical alignment of the sensor with respect to the mag-
netic target.
All device parameters can be stored in the inter-
nal non-volatile Zener-zapping ROM to allow self-
configuration after power on. The required writing
algorithm for programming is executed by the IC it-
self.
Together with the appropriate magnetic scale or pole
wheel, the iC-MHL200 provides a single-chip solution
for linear and rotary encoders.
PACKAGING INFORMATION TSSOP20
PIN CONFIGURATION TSSOP20
PIN FUNCTIONS
No. Name Function
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
SLI
MA
VPA
VNA
nc
nc
VZAP
A
B
Z
VND
VPD
U
V
W
PTE
NERR
GAIN
ENZ
SLO
Serial Interface, Data Input
Serial Interface, Clock Input
+5 V Supply Voltage (analog)
Ground (analog)
not connected
not connected
Zener Zapping Programming Voltage
Inkremental A (+ NU)
Inkremental B (+ NV)
Index Z (+ NW)
Ground (digital)
+5 V Supply Voltage (digital)
Commutation U (+NA)
Commutation V (+NB)
Commutation W (+NZ)
Test Enable Pin
Error output (active low)
Gain-Signal
Enable Index Z
Serial Interface, Data Output
1
SLI
2
MA
3
VPA
4
VNA
5
n.c.
6
n.c.
7
VZAP
8
A
9
B
10
Z
20
SLO
19
ENZ
18
GAIN
17
NERR
16
PTE
15
W
14
V
13
U
12
VPD
11
VND
Orientation of the logo (
...yyww
MHL200
Code...
MHL CODE ...) is subject to alteration.
iC-MHL200
preliminar y
Rev A1, Page 5/28
12-BIT LINEAR / ROTARY POSITION HALL ENCODER
ABSOLUTE MAXIMUM RATINGS
Beyond these values damage may occur; device operation is not guaranteed.
Item
No.
Symbol
Parameter
Supply voltages at VPA, VPD
Zapping voltage
Voltages at A, B, Z, U, V, W, MA, SLO,
SLI, NERR, PTE
Current in VPA
Current in VPD
Current in A, B, Z, U, V, W
Current in MA, SLO, SLI, NERR, PTE
ESD-voltage, all pins
Storage temperature
Chip temperature
HBM 100 pF discharged over 1.5 kΩ
-40
-40
Conditions
Min.
-0.3
-0.3
-0.3
-10
-20
-100
-10
Max.
6
8
6
20
200
100
10
2
150
135
V
V
V
mA
mA
mA
mA
kV
°C
°C
Unit
G001 V()
G002 V(VZAP)
G003 V()
G004 I()
G005 I()
G006 I()
G007 I()
G008 Vd()
G009 Ts
G010 Tj
THERMAL DATA
Operating conditions: VPA, VPD = 5 V ±10 %
Item
No.
T01
T02
Symbol
Ta
Rthja
Parameter
Ambient temperature
Thermal resistance chip/ambient
package mounted on PCB
Conditions
Min.
-40
100
Typ.
Max.
125
°C
K/W
Unit
All voltages are referenced to ground unless otherwise stated.
All currents flowing into the device pins are positive; all currents flowing out of the device pins are negative.
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