ICHAUS IC-MHA

iC-MHA
HALL ANGLE ENCODER
WITH SIN/COS OUTPUTS
The iC-MHA is an integrated Hall device for sensing the angular
position of a diametral magnet. With the internal signal conditioning, sine and cosine components of the magnetic field direction are available on buffered outputs. By using differential Hall
sensors for both sine and cosine sensing, the device is
insensitive to homogenious magnetic stray fields.
To compensate for variations in magnetic working distance,
temperature and drift, the differential output signals are regulated to 1 Vpp. The outputs are designed to drive differential
resistive loads down to 100 Ω .
Features
•
•
•
•
Sine/cosine differential outputs
Automatic gain control for 1 Vpp differential signal
amplitude
Operating speed from DC to 20 000 RPM
Loss-of-magnet detection and error messaging
Applications
•
•
•
•
Resolver replacement
Contactless rotary sensor / potentiometer
Absolute and incremental rotary encoders
Motor feedback
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
iC-MHA
HALL ANGLE ENCODER WITH SIN/COS OUTPUTS
Key Specifications
Pin Functions
General
No.
Name
Function
Supply Voltage
5 V ±10 %
2
NERR
Error Message Output (active low)
Supply Current, no load
30 mA max.
3
VPA
+5 V Analog Supply Voltage
Magnetic Field Strength
20 ... 100 kA/m
4
VNA
Analog Ground
Operating speed of magnet
DC to 20.000 RPM
10
PCOUT
Positive Cosine Output
Output Drivers Capability
1 Vpp diff. to 100 Ω
11
NCOUT
Negative Cosine Output
Operational Temperature Range
-40 to +125 °C
18
VND
Digital Ground
ESD Susceptibility
2 kV (HBM 100 pF, 1.5 kΩ)
19
VPD
+5 V Digital Supply Voltage
Angle Accuracy
typ. 0.2 degree
(chip axis centered to field axis)
25
NSOUT
Negative Sine Output
26
PSOUT
Positive Sine Output
typ. 0.1 degree
TP
Angle Repeatability
Output Signal vs. Magnet Position
28
27
26
25
24
23
28
22
27
26
25
24
23
(top view)
22
S
21
1
20
2
20
3
19
S
1
2
3
19
18
4
18
17
5
17
16
6
16
15
7
7
N
4
6
8
9
10
11
12
13
14
N
8
9
10
11
>0
15
12
13
14
=0
0
VSIN= VPSOUT - VNSOUT VCOS= VPCOUT - VNCOUT
+0.5 V
-90°
90°
180°
270°
360°
-0.5 V
C041007-4
Application Example
n.c.
not connected
13, 14
n.c.
not connected
23, 24
n.c.
not connected
27, 28
n.c.
not connected
Pins for device test and factory calibration:
21
5
Thermal-Pad
8, 9
1
PT1
connect to VND
5
PT5
connect to VND
6
PT6
connect to VPD
7
PT7
not to be connected
12
PT12
connect to VND
15
PT15
connect to VND
16
PT16
connect to VND
17
PT17
connect to VND
20
PT20
connect to VND
21
PT21
connect to VND
22
PT22
connect to VND
Pin Configuration QFN28 5x5 mm²
PSOUT NSOUT
nc
nc
28
27
26
25
nc
nc PT22
24
23
22
PT1
1
21
PT21
NERR
2
20
PT20
VPA
3
19
VPD
VNA
4
18
VND
PT5
5
17
PT17
PT6
6
16
PT16
PT7
7
15
PT15
MHA
8
9
nc
nc
10
13
14
PT12 nc
nc
11
12
C301107-12
PCOUT NCOUT
This tentative information shall not be considered as a guarantee of characteristics. 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