mlx90316 Melexis Company, mlx90316 Datasheet - Page 23

• Manufacturer Part Number: mlx90316
• Description: Rotary Position Sensor Ic
• Manufacturer: Melexis Company

14.5.3. IIR Filters
The IIR Filter is enabled with Filter = 6. The diagram of the IIR Filter implemented in the MLX90316 is
given in Figure 11. Only the parameter A1 and A2 are configurable (See Table 2).
The Figure 12 shows the response of the filter to a Gaussian noise with default coefficient A1 and A2.
3901090316
Rev. 003
90% Response Time
Efficiency RMS (dB)
Efficiency P2P (dB)
Coefficient A1
Coefficient A2
x(n)
Filter No
Type
Title
40200
40150
40100
40050
40000
39950
39900
39850
39800
Z
Z
-1
-1
0
26112
10752
12.9
9.9
11
Figure 12 - Noise Response for the IIR Filter
b
b
b
0
1
2
Table 2 - IIR Filter Selection Table
= 1
= 2
= 1
IIR Filter - Gaussian White Noise Response
28160
12288
Figure 11 - IIR Diagram
11.4
14.6
16
50
2
Page 23 of 41
nd
Order Infinite Impulse Response (IIR)
Time
29120
12992
13.6
17.1
26
100
Medium & Strong
6
Rotary Position Sensor IC
30208
13952
-a
-a
15.3
18.8
40
1
2
150
Z
Z
-1
-1
MLX90316
31296
14976
16.2
52
20
x(n)
y(n)
y(n)
Data Sheet
31784
15412
100
>20
>20
April 07