AD9260–Digital Filter Characteristics
0
–20
–40
–60
–80
–100
–120
0
0.2
0.4
0.6
0.8
1.0
1.2
FREQUENCY (NORMALIZED TO )
Figure 1a. 8× FIR Filter Frequency Response
0
–20
–40
–60
–80
–100
–120
0
0.2
0.4
0.6
0.8
1.0
1.2
FREQUENCY (NORMALIZED TO )
Figure 2a. 4× FIR Filter Frequency Response
0
–20
–40
–60
–80
–100
–120
0
0.2
0.4
0.6
0.8
1.0
1.2
FREQUENCY (NORMALIZED TO )
Figure 3a. 2× FIR Filter Frequency Response
1.0
0.8
0.6
0.4
0.2
0
–0.2
–0.4 0
100
200
300
400
500
CLOCK PERIODS – RELATIVE TO CLK
Figure 1b. 8× FIR Filter Impulse Response
1.0
0.8
0.6
0.4
0.2
0
–0.2
0
10 20 30 40 50 60 70 80 90 100 110
CLOCK PERIODS – RELATIVE TO CLK
Figure 2b. 4× FIR Filter Impulse Response
1.0
0.8
0.6
0.4
0.2
0
–0.2
0
5
10
15
20
CLOCK PERIODS – RELATIVE TO CLK
Figure 3b. 2× FIR Filter Impulse Response
–6–
REV. B