Philips km110bh DATASHEETS

DISCRETE SEMICONDUCTORS

DATA SH EET

KM110BH/2270

Angle sensor hybrid circuit

Preliminary speciﬁcation File under Discrete Semiconductors, SC17

Philips Semiconductors

September 1995

Philips Semiconductors Preliminary speciﬁcation

Angle sensor hybrid circuit KM110BH/2270

FEATURES

• Angle measuring range 70°

• Contactless, therefore wear-free and no micro-linearity

problems

• Easy to mount, ready for use

• Analog current output signal

• Operating temperatures up to 100 °C

• EMC resistant

• Sample kit with magnet available.

DESCRIPTION

Sensor module for contactless measurement of angular displacements of strong magnetic fields between−35° and +35°. The module is a ready-trimmed (sensitivity and zero point) combination of the magnetoresistive sensor KMZ10B and a signal conditioning circuit in hybrid technology. The KMZ110BH/2270 delivers a sinusoidal current output signal which is a function of the direction of the magnetic field. The module can be used for contactless angle measurement.

PINNING

PIN DESCRIPTION

1 ground 2V 3I

PIN OPTIONS

The KMZ110BH/2270 sensor hybrid is available with different electrical contacts.

123

MBD070

• Stretched pins with a pitch of 2.54 mm. These pins are recommended for connector and/or cable connections.

• Double ‘s’ bent pins (see Fig. 6) with a pitch of 5.71 mm. Bent pins are recommended for rigid soldered connections to compensate for mechanical stress. This hybrid circuit is available under type number

Fig.1 Simplified outline.

KM110BH/2270G.

QUICK REFERENCE DATA

SYMBOL PARAMETER MIN. TYP. MAX. UNIT

DC supply voltage − 8.5 − V

output current range − 4 to 20 − mA α angle range −−35 to +35 − deg T

operating temperature −40 − +100 °C

September 1995 2

Philips Semiconductors Preliminary speciﬁcation

Angle sensor hybrid circuit KM110BH/2270

handbook, full pagewidth

sensor

angle range

temperature

compensation

VOLTAGE CONTROL

Fig.2 Circuit diagram.

LIMITING VALUES

In accordance with the Absolute Maximum Rating System (IEC 134).

SYMBOL PARAMETER MIN. MAX. UNIT

stg

DC supply voltage 8.1 11 V supply current − 40 mA storage temperature −40 +125 °C operating temperature −40 +100 °C output short-circuit duration permanent; note 1

current

interface

MBD061

GND

Note

1. If pin 3 is shorted to either pin 1 or pin 2, current may flow permanently, without damage to the device.

September 1995 3

Philips Semiconductors Preliminary speciﬁcation

Angle sensor hybrid circuit KM110BH/2270

CHARACTERISTICS

= 25 °C; VCC = 8.5 V and a homogeneous magnetic ﬁeld H

amb

sensor, unless otherwise speciﬁed.

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

α angle range note 1 −−35 to +35 −46.5 to +46.5 deg I

output current range note 2; sinusoidal,

see Fig.4

zero

offset

zero point current α = 0°−12 − mA

zero point offset current −±120 −µA S sensitivity α = 0°; note 3 0.289 0.292 0.295 mA/deg Rp reproducibility α = 0°; note 4 − <0.001 − deg Rs resolution α = 0°; note 5 − <0.001 − deg Rhy hysteresis α = 0°; note 6 − <0.05 − deg SP R

max

maximum angular speed − 20 − deg/ms

load resistance − 200 220 Ω

Temperature coefﬁcients (−40 to +85 °C)

TCI

zero

temperature coefﬁcient of

zero point current TCS temperature coefﬁcient of

sensitivity

= 100 kA/m in the sensitive layer of the KMZ10B

ext

− 4 to 20 3.2 to 20.8 mA

−±1.5 −µA/K

−±100 − ppm/K

Note

1. Refer to Fig.3. The magnetic field H

= 100 kA/m can be achieved using the magnets listed in Table 1.

ext

2. Maximum values refer to ±46.5° including offset and sensitivity tolerances.

3. The sensitivity will change slightly with +0.33% per 10% magnetic field increase if H

deviates from 100 kA/m.

ext

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: +35°→ 0°→ +35°→ 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: +35°→ 0°→−35°→ 0°).

September 1995 4

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