Datasheet

KMZ60 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2014. All rights reserved.
Product data sheet Rev. 2 — 7 February 2014 4 of 30
NXP Semiconductors
KMZ60
Angle sensor with integrated amplifier
connected to ground. Pin VTEMP delivers a temperature dependent output voltage
V
O(TEMP)
in both cases, which is tracking ratiometric with the supply voltage. It uses the
internal PTAT reference and can be left open or connected to ground or preferably to V
CC
if not used. The pin POWERDOWN_EN input switches the device into Power-down mode
and sets the pin VOUT1 and pin VOUT2 output to high impedance and disables
pin VTEMP. It must be connected to ground if not used. An implemented broken bond
wire detection for all internal connections to the MR sensor is drawing the output voltages
V
o(VOUT1)
and V
o(VOUT2)
to the ground level in case of a failure. Both outputs are
short-circuit proof.
The integrated MR sensor element is a sensitive magnetic field sensor, employing the MR
effect of thin film permalloy. The sensor contains two parallel supplied Wheatstone
bridges, which enclose a sensitive angle of 45 degrees. A rotating magnetic field in the
surface parallel to the chip (x-y plane) will deliver two independent sinusoidal output
signals, one following a cos(2) and the second following a sin(2) function.  is the
mechanical angle between sensor and field direction.
The definition of the output signal amplitude V
o(VOUT1)
and V
o(VOUT2)
and the output offset
voltage V
offset(VOUT1)
and V
offset(VOUT2)
of KMZ60 for a mechanical angle of 360 degrees is
shown in Figure 2
.
(1) Offset positive
(2) Offset negative
Fig 2. Definition of output signal amplitude and offset voltage
001aan886
0 90 180 270 360
(deg)
V
o(VOUT2)
V
o(VOUT2)
+
V
offset(VOUT2)
(2)
V
o(VOUT1)
V
o(VOUT1)
+
V
offset(VOUT1)
(1)
93 %
V
CC
50 %
V
CC
7 %
V
CC
V
offset(VOUT1)
V
offset(VOUT2)