MLX90365 Datasheet, PDF (12/35 Pages) Melexis Microelectronic Systems – Triaxis® Position Sensor IC

MLX90365
Triaxis® Position Sensor IC
10. MLX90365 Accuracy Specification
ANALOG OUTPUT - DC Operating Parameters at Nominal Supply Voltage (unless otherwise specified)
and for T_A as specified by the Temperature suffix (E or K or L).
Parameter
Symbol
Test Conditions
Min Typ Max Units
ADC Resolution on the raw
RADC
signals sine and cosine⁽¹⁰⁾
15
bits
Thermal Offset Drift #1⁽¹¹⁾
Temperature suffix E
-60
+60
at the DSP input (excl. DAC and
output stage)
Temperature suffix K
Temperature suffix L
-60
+60
LSB15
-90
+90
Thermal Offset Drift #2
( DAC and Output Stage)
-0.2
+0.2
%VDD
Thermal Drift of Sensitivity
Mismatch⁽¹²⁾
XY axis – Temp. suffix E
- 0.3
XY axis – Temp.suffix K & L
- 0.5
XZ (YZ) axis – Temp. suffix E
-1
XZ (YZ) axis – Temp. suffix K & L
-1
+ 0.3
+ 0.5
+1
%
+1
Magnetic Angle phase error
TA = 25°C – XY axis
TA = 25°C – XZ axis
TA = 25°C – YZ axis
-0.3
0.3
-2
2
Deg.
-2
2
Thermal Drift of Magnetic Angle
phase error
XY axis, XZ (YZ) axis
0.01
Deg.
XY – Intrinsic Linearity Error⁽¹³⁾
Le T_A = 25°C – factory trim. “SMISM”
-1
1
Deg
XZ - Intrinsic Linearity Error⁽¹³⁾
Le T_A = 25°C – “k” trimmed for XZ
-2.5 ±1.25 +2.5
Deg
YZ - Intrinsic Linearity Error⁽¹³⁾
Le T_A = 25°C – “k” trimmed for YZ
-2.5 ±1.25 +2.5
Deg
Analog Output Resolution
RDAC 12b DAC (Theoretical, Noise free)
0.025
INL (before EOL calibration)
-4
DNL
0.05
1
%VDD/LSB12
+4
LSB12
3
LSB12
Output stage Noise
Clamped Output
0.05 0.075 %VDD
Noise pk-pk⁽¹⁴⁾
Filter = 0, 40mT
Filter = 2, 20mT
0.10 0.2
0.10 0.2
Deg
Ratiometry Error (Analog output
only)
4.5V ≤ VDD ≤ 5.5V
LT4V ≤ VDD ≤ MT7V
-0.05
-0.1
+0.05
+0.1
%VDD
10 _{16 bits corresponds to 15 bits + sign. Internal computation is performed using 16 bits.}
11 _{For instance, in case of a rotary position sensor application, Thermal Offset Drift #1 equal ± 60LSB15 yields to max. ± 0.3 Deg.}
angular error for the computed angular information (output of the DSP). This is only valid if k = 1.
12 _{For instance, in case of a rotary position sensor application, Thermal Drift of Sensitivity Mismatch equal ± 0.5% yields to max.}
± 0.15 Deg. angular error for the computed angular information (output of the DSP).
13 _{The Intrinsic Linearity Error refers to the IC itself (offset, sensitivity mismatch, orthogonality) taking into account an ideal}
rotating field for BX and BY. Once associated to a practical magnetic construction and the associated mechanical and magnetic
tolerances, the output linearity error increases. However, it can be improved with the multi-point end-user calibration.
14 _{Noise pk-pk (peak-to-peak) is here intended as 6 times the Noise standard Deviation. The application diagram used is}
described in the recommended wiring. For detailed information, refer to section Filter in application mode (Section 14.6).
MLX90365
Rev. 5.7
Page 12 of 35
Datasheet
Jan. 22, 16