KMZ10A1,112 NXP Semiconductors, KMZ10A1,112 Datasheet - Page 6

• Manufacturer Part Number: KMZ10A1,112
• Manufacturer: NXP Semiconductors

Specifications of KMZ10A1,112

• Operating Temperature (min): -40C
• Operating Supply Voltage (typ): 5V
• Lead Free Status / Rohs Status: Supplier Unconfirmed

Philips Semiconductors
APPLICATION INFORMATION
A problem with measuring weak magnetic fields is that precision is limited by drift in both the sensor and amplifier offset.
In these instances, it is possible to take advantage of the ‘flipping’ characteristics of the KMZ10 series to generate an
output that is independent of offset. The sensor, located in a coil connected to a current pulse generator producing
magnetic field pulses periodically reversed by alternate positive and negative going current pulses, is continually flipped
from its normal to its reversed polarity and back again. The polarity of the offset however, remains unchanged, so the
offset itself can be eliminated by passing the output signal through a filter circuit.
1998 Apr 06
handbook, full pagewidth
Magnetic field sensor
(a) Set-up.
(b) Pulse diagram.
(c) Sensor output characteristics.
V o
Fig.8 Measuring weak magnetic fields with the KMZ10A1.
1 2 3 4
(a)
H x
H y
sensor
current
coil
(b)
6
polarization
time
V o
offset
(c)
MBC925
offset
M x
M x
H y
Product specification
KMZ10A1