DISCRETE SEMICONDUCTORS
DATA SHEET
KM110BH/2430; KM110BH/2470
30° and 70° angle sensor hybrids
Product specification
Supersedes data of 1996 Nov 08
File under Discrete Semiconductors, SC17
1998 Mar 26
Philips Semiconductors
Product specification
30° and 70° angle sensor hybrids
FEATURES
•
Angle measuring range 30° or 70°
•
Contactless, therefore wear-free and no microlinearity
problems
•
Easy to mount, ready for use
•
Analog voltage output signal
•
Operating temperatures up to 125
°C
•
Precision of
±
0.5° in the temperature range
(−15°
≤ α ≤
+15°)
•
EMC resistant
•
Sample kit with magnet available.
DESCRIPTION
The KM110BH/2430 and the KM110BH/2470 are sensor
modules for contactless measurement of angular
displacements of strong magnetic fields. The modules are
a ready-trimmed (sensitivity and zero point) combination of
a magnetoresistive KMZ sensor and a signal conditioning
circuit in hybrid technology.
The KM110BH/2430 delivers a voltage output signal which
is a linear function of the direction of the magnetic field.
The KM110BH/2470 delivers a sinusoidal voltage output
signal. The modules can be used for contactless angle
measurement.
PINNING
PIN
1
2
3
SYMBOL
GND
V
CC
V
O
DESCRIPTION
ground
DC supply voltage
output voltage
andbook, halfpage
KM110BH/2430;
KM110BH/2470
1
2
3
MBD897
Fig.1 Simplified outline.
QUICK REFERENCE DATA
SYMBOL
V
CC
T
oper
α
PARAMETER
DC supply voltage
operating temperature
angle range:
KM110BH/2430
KM110BH/2470
V
O
output voltage range
−
−
−
−15
to +15
−35
to +35
0.5 to 4.5
−
−
−
deg
deg
V
4.5
−40
MIN.
5
−
TYP.
16
+125
MAX.
V
°C
UNIT
1998 Mar 26
2
Philips Semiconductors
Product specification
30° and 70° angle sensor hybrids
EMC RESISTIVITY
KM110BH/2430;
KM110BH/2470
The EMC compatibility is dependent on the assembly of the sensors. The EMC resistivity has to be tested in the final
application.
BLOCK DIAGRAM
handbook, full pagewidth
sensor
angle
range
temperature
compensation
current
limiter
V CC
VO
GND
MBB577
Fig.2 Block diagram.
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
SYMBOL
V
CC
I
CC
T
stg
T
oper
PARAMETER
DC supply voltage
supply current
storage temperature
operating temperature; note 1
output short-circuit duration
Notes
1. For operations above T
oper
= 100
°C,
maximum V
CC
derates linearly from 16 V to 5 V at T
oper
= 125
°C.
2. If pin 3 is shorted to either pin 1 or pin 2, a current may flow permanently, without damaging the device.
4.5
−
−40
−40
MIN.
16
15
+125
+125
permanent; see note 2
MAX.
V
mA
°C
°C
UNIT
1998 Mar 26
3
Philips Semiconductors
Product specification
30° and 70° angle sensor hybrids
KM110BH/2430;
KM110BH/2470
CHARACTERISTICS
T
amb
= 25
°C;
V
CC
= 5 V; R
L
= 1.7 kΩ and a homogeneous magnetic field H
ext
= 100 kA/m in the sensitive layer of the
KMZ sensor, unless otherwise specified.
SYMBOL
α
PARAMETER
angle range:
KM110BH/2430
KM110BH/2470
V
O
output voltage range:
KM110BH/2430
KM110BH/2470
V
zero
V
off
zero point voltage
zero point offset voltage:
KM110BH/2430
KM110BH/2470
α
off
S
zero point offset angle
sensitivity:
KM110BH/2430
KM110BH/2470
P
precision:
KM110BH/2430
KM110BH/2470
FL
deviation of linearity:
KM110BH/2430
KM110BH/2470
R
p
R
s
FH
SP
max
reproducibility
resolution
hysteresis
maximum angular speed:
KM110BH/2430
KM110BH/2470
R
L
C
L
TCV
zero
load resistance
load capacitance
−
−
1.7
−
60
150
−
−
−
−
−
10
deg/ms
deg/ms
kΩ
nF
α
= 0°; note 4
α
= 0°; note 5
α
= 0°; note 6
note 3
−
−
−
−
−
±1
−
<0.001
<0.001
<0.05
−
−
−
−
−
%⋅FS
%⋅FS
deg
deg
deg
−20
to +100
°C
related to hybrid edges;
see Fig.7
α
= 0°; note 2
137
73
−
0.2
0.5
0.5
1.2
deg
deg
140
74.5
143
76
mV/deg
mV/deg
linear; see Fig.4
sinusoidal; see Fig.5
α
= 0°
related to sinusoidal sensor
characteristic; see Fig.5
−
−
−
−
−
−
0.5 to 4.5
0.5 to 4.5
2.5
±25
±15
1
−
−
−
−
−
3
V
V
V
mV
mV
deg
note 1
−
−
−15
to +15
−35
to +35
−
−
deg
deg
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Temperature coefficients (−40 to +100
°C)
temperature coefficient
of zero point voltage:
KM110BH/2430
KM110BH/2470
TCS
temperature coefficient
of sensitivity
−20
to 100
°C
−
−
−
0.2
0.1
100
×
10
−6
0.6
0.3
−
mV/K
mV/K
K
−1
1998 Mar 26
4
Philips Semiconductors
Product specification
30° and 70° angle sensor hybrids
Notes to the characteristics
KM110BH/2430;
KM110BH/2470
1. Refer to Fig.3. The magnetic field H
ext
= 100 kA/m can be achieved using the magnets listed in Table 1.
2. The sensitivity will change slightly with +0.33% per 10% magnetic field increase if H
ext
deviates from 100 kA/m.
3. Deviation from best straight line in angle range.
4. Difference in output signal (expressed in degrees) between two zero point (α = 0°) measurements, in which the zero
point is approached from the same side of the measuring range (e.g. cycle: +15°
⇒
0°
⇒
+15°
⇒
0°).
5. The smallest detectable change of angle
∆α
for
α
= 0° (cycle: 0°
⇒ ∆α).
6. As note 4, but with the zero point being approached from the upper end and lower end of the measuring range
respectively (cycle: +15°
⇒
0°
⇒ −15° ⇒
0°).
handbook, full pagewidth
d
S
N
1
2
3
MBD900
α
Fig.3 Optimum magnet position relative to the sensor module.
1998 Mar 26
5
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