Data Sheet

MLX90393
Micropower Triaxis® Magnetometer Datasheet
6. Magnetic Specification
The specifications are applicable at 25degC, unless specified otherwise, and for the complete supply voltage
range.
Parameter Remark Min Nom Max Unit
N
ADC
ADC span 17.4 bits
N
OUT
Output span (taken from 19 by RES
XYZ
) 16 bits
B
RANGE
Output range (function of RES
XYZ
) RANGE from Table 1Table 4 / SENS
ii
mT
B
SAT
Magnetic saturation onset 50 mT
OFFS Deviation from expected 0mT output 0 LSB
OFFS
THD
Offset thermal drift, Delta from 25°C
(1)
< ±1000 LSB
SENS
XX
,
SENS
YY
Programming range of magnetic
resolution (µT/LSB) or sensitivity
(LSB/mT)
(2)
[modifying GAIN_SEL and RES
XYZ
], cfr.
Table 3
3.220 0.161 µT/LSB
311 6211 LSB/mT
SENS
ZZ
5.872 0.294 µT/LSB
170 3406 LSB/mT
SENS
XY
,
SENS
YX
Cross-axis sensitivity (X/Y-axis
sensitivity to Y/X magnetic fields)
< ±1 %
SENS
XZ
,
SENS
YZ
Cross-axis sensitivity (X/Y-axis
sensitivity to Z magnetic field)
< ±1 %
SENS
ZX
,
SENS
ZY
Cross-axis sensitivity (Z-axis sensitivity
to X and Y magnetic fields)
< ±1 %
SENS
THD
Sensitivity thermal drift
Delta from 25°C
(3)
-3 +3 %
(1) The offset thermal drift is defined as the deviation at 0Gauss from the output with respect to the
output at 25°C when sweeping the temperature. The highest gradient (µT/°C) typically occurs at
85°C. The spec value is based on characterization on limited sample size at GAIN_SEL=0x7 and
RES_XYZ=0x00.
(2) The total axis sensitivity is programmable to support different applications, but has no Automatic
Gain control on-chip as do the other angular position sensors from Melexis. The highest gain
corresponds to at least the minimum +/-4.8mT magnetic measurement range and the magnetic
resolution defined by SENS
ii
.
(3) The sensitivity thermal drift is expressed as a band around the sensitivity at 25°C. It is applicable on
wafer level trimming, but can be influenced by packaging (overmolding).
3901090393 Data Sheet
Rev002 Page 6 Feb-2015