MLX90316KDC-BDG Datasheet, PDF (14/45 Pages) Melexis Microelectronic Systems – Rotary Position Sensor IC

MLX90316
Rotary Position Sensor IC
10. MLX90316 Accuracy Specification
DC Operating Parameters at VDD = 5V (unless otherwise specified) and for T_A as specified by the
Temperature suffix (S, E, K or L).
Parameter
Symbol
Test Conditions
Min Typ Max Units
ADC Resolution on the raw
signals sine and cosine
Thermal Offset Drift #1⁽¹³⁾
Thermal Offset Drift #2
(to be considered only for the
analog output mode)
Thermal Drift of Sensitivity
Mismatch⁽¹⁴⁾
Intrinsic Linearity Error⁽¹⁵⁾
Analog Output Resolution
Output stage Noise
Noise pk-pk⁽¹⁶⁾
Ratiometry Error
PWM Output Resolution
PWM Jitter⁽¹⁷⁾
Serial Protocol Output
Resolution
RADC
Slow Mode⁽¹²⁾
Fast Mode⁽¹²⁾
15
bits
14
bits
Thermal Offset Drift at the DSP
input (excl. DAC and output stage)
Temperature suffix S, E and K
-60
Temperature suffix L
-90
+60
LSB15
+90
LSB15
Thermal Offset Drift of the DAC
and Output Stage
Temperature suffix S, E and K
- 0.3
Temperature suffix L
- 0.4
+ 0.3 %VDD
+ 0.4 %VDD
Temperature suffix S, E and K
- 0.3
Temperature suffix L
- 0.5
+ 0.3
%
+ 0.5
%
Le T_A = 25°C
-1
1
Deg
RDAC 12 bits DAC
(Theoretical – Noise free)
INL
DNL
0.025
%VDD/LSB
-4
+4
LSB
-2
+2
LSB
Clamped Output
0.05
%VDD
RG = 9, Slow mode, Filter=5
RG = 9, Fast mode, Filter=0
0.03 0.06
Deg
0.1 0.2
Deg
-0.1
0
0.1
%VDD
RPWM 12 bits
(Theoretical – Jitter free)
0.025
%DC/LSB
JPWM RG = 6, FPWM = 250 Hz – 800Hz
0.2
%DC
RSP 14 bits – 360 Deg.
Mapping(Theoretical – Jitter free)
0.022
Deg/LSB
12 _{15 bits corresponds to 14 bits + sign and 14 bits corresponds to 13 bits + sign. After angular calculation, this corresponds to}
0.005Deg/LSB₁₅ in Low Speed Mode and 0.01Deg/LSB₁₄ in High Speed.
13 _{For instance, Thermal Offset Drift #1 equal ± 60LSB15 yields to max. ± 0.3 Deg. angular error for the computed angular}
information (output of the DSP). See Front End Application Note for more details. This is only valid if automatic gain is set (See
Section 14.4.2)
14 _{For instance, Thermal Drift of Sensitivity Mismatch equal ± 0.4% yields to max. ± 0.1 Deg. angular error for the computed}
angular information (output of the DSP). See Front End Application Note for more details.
15 _{The Intrinsic Linearity Error refers to the IC itself (offset, sensitivity mismatch, orthogonality) taking into account an ideal}
rotating field. 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 that is available on the
MLX90316.
16 _{The application diagram used is described in the recommended wiring. For detailed information, refer to section Filter in}
application mode (Section 14.5).
17 _{Jitter is defined by ± 3 σ for 1000 successive acquisitions and the slope of the transfer curve is 100%DC/360 Deg.}
3901090316
Rev10
Page 14 of 45
Jul/13