參數(shù)資料
型號(hào)： MLX90316
廠商： Electronic Theatre Controls, Inc.
英文描述： Rotary Position Sensor IC
中文描述： 旋轉(zhuǎn)位置傳感器IC
文件頁(yè)數(shù)： 13/41頁(yè)
文件大?。?/td> 688K
代理商： MLX90316
MLX90316
Rotary Position Sensor IC
3901090316
Rev. 003
Page 13 of 41
Data Sheet
April 07
10.
DC Operating Parameters at V
DD
= 5V (unless otherwise specified) and for T
A
as specified by the
Temperature suffix (S, E, K or L).
MLX90316 Accuracy Specification
Parameter
Symbol
Test Conditions
Min
Typ
Max
Units
ADC Resolution on the raw
signals sine and cosine
R
ADC
Slow Mode
(16)
Fast Mode
(16)
Thermal Offset Drift at the DSP
input (excl. DAC and output stage)
Temperature suffix S, E and K
Temperature suffix L
Thermal Offset Drift of the DAC
and Output Stage
Temperature suffix S, E and K
Temperature suffix L
Temperature suffix S, E and K
Temperature suffix L
T
A
= 25
°
C
12 bits DAC
(Theoretical – Noise free)
INL
DNL
Clamped Output
RG = 9, Slow mode, Filter=5
RG = 9, Fast mode, Filter=0
12 bits
(Theoretical – Jitter free)
RG = 6, F
PWM
= 250 Hz – 800Hz
14 bits – 360 Deg. mapping
(Theoretical – Jitter free)
15
14
bits
bits
LSB
15
LSB
15
%V
DD
%V
DD
%
%
Deg
Thermal Offset Drift #1
(17)
-60
-90
- 0.3
- 0.4
- 0.3
- 0.5
-1
+60
+90
+ 0.3
+ 0.4
+ 0.3
+ 0.5
1
Thermal Offset Drift #2
(to be considered only for the
analog output mode)
Thermal Drift of Sensitivity
Mismatch
(18)
Intrinsic Linearity Error
(19)
Le
Analog Output Resolution
R
DAC
-4
0.05
0.025
1
0.05
0.03
0.1
0
0.025
+4
2
0.06
0.2
0.1
%V
DD
/LSB
LSB
LSB
%V
DD
Deg
Deg
%V
DD
%
DC
/LSB
%
DC
Deg/LSB
Output stage Noise
Noise pk-pk
(20)
Ratiometry Error
PWM Output Resolution
-0.1
R
PWM
PWM Jitter
(21)
Serial Protocol Output
Resolution
J
PWM
R
SP
0.2
0.022
16
15 bits corresponds to 14 bits + sign and 14 bits corresponds to 13 bits + sign. After angular calculation, this corresponds to
0.005Deg/LSB
15
in Low Speed Mode and 0.01Deg/LSB
14
in High Speed.
17
For instance, Thermal Offset Drift #1 equal ± 60LSB
15
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)
18
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.
19
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.
20
The application diagram used is described in the recommended wiring. For detailed information, refer to section Filter in
application mode (Section 14.5).
21
Jitter is defined by ± 3
σ
for 1000 successive acquisitions and the slope of the transfer curve is 100%
DC
/360 Deg.
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