MLX90316_05 Datasheet, PDF (11/34 Pages) List of Unclassifed Manufacturers – 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 or K).
All the errors expressed in Deg. Can be converted in %Vdd or %dc by using the following relationship:
Err (%Vdd) = Err (Deg) × Output Span (%Vdd) / Angular Span (Deg) + Err_DAC + Err_OutBuf
Err (%DC) = Err (Deg) × Output Span (%DC) / Angular Span (Deg)
Err (Serial Protocol) = Err (Deg)
Parameter
ADC Resolution
Thermal Offset Drift #1
Thermal Offset Drift #2
Analog Output Resolution
Output stage Noise
Noise pk-pk (¹⁰)
Ratiometry Error
PWM Output Resolution
PWM Jitter(¹¹)
Serial Protocol Output
Resolution
Intrinsic Linearity Error(¹²)
Symbol
Test Conditions
Min
RADC Slow – 15 bits ADC (14 + sign)
Fast – 14 bits ADC (13 + sign)
Thermal Offset Drift at the DSP
-60
input (excl. DAC and output stage)
Thermal Offset Drift of the DAC - 0.2
and Output Stage
Only for the Analog Output
RDAC 12 bits DAC
(Theoretical – Noise free)
INL
-4
DNL
0.05
RG = 9, Slow mode, Filter=5
RG = 9, Fast mode, Filter=0
-0.1
RPWM 12 bits
(Theoretical – Jitter free)
JPWM fPWM = 250 Hz
RSP 14 bits – 360 Deg. mapping
(Theoretical – Jitter free)
Le 360 Deg
-2
Typ
0.005
0.01
0.025
1
0.05
0.03
0.1
0
0.025
0.022
Max
+60
Units
Deg/LSB15
Deg/LSB14
LSB15 (⁹)
+ 0.2 %Vdd
%Vdd/LSB
+4
LSB
2
LSB
% Vdd
0.06
Deg
0.2
Deg
0.1
%
%DC/LSB
0.2
%DC
Deg/LSB
2
Deg
(⁹) Thermal Offset Drift #1 yields to max. ± 0.3 Deg. drift for the computed angular information (output of
the DSP).
(¹⁰) The application diagram used is described in the recommended wiring. For detailed information, refer
to section filter in application mode.
(¹¹) Jitter is defined by ± 3 for 1000 acquisitions.
(¹²) 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 2 point or 3 point end-user calibration that is available on the MLX90316.
3901090316
Rev. 001
Page 11 of 34
Data Sheet
4 October 05