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Filter Response
(page 2)
Figure 5: accuracy vs. time
16bit
15bit
14bit
13bit
12bit
11bit
10bit
time, 2/Fc per division from 0 to 16/Fc
Figure 6: passband phase deviation
100
o
80
o
60
o
40
o
20
o
0
o
-20
o
-40
o
-60
o
-80
o
-100
o
frequency, 0.1Fc per division from 0 to 1.1Fc
Figure 7: passband group delay
4/Fc
3/Fc
2/Fc
1/Fc
0
frequency, 0.1Fc per division from 0 to 1.1Fc
Figure 8: vector error
0dB
-10dB
-20dB
-30dB
-40dB
-50dB
-60dB
-70dB
frequency, 0.1Fc per division from 0 to 1.1Fc
Figure 9: passband phase linearity
10
o
8
o
6
o
4
o
2
o
0
o
-2
o
-4
o
-6
o
-8
o
-10
o
frequency, 0.1Fc per division from 0 to 1.1Fc
Response information for:
OPT49
stopband response
-77.23dB at 1.525Fc
equivalent attenuation slope
126.84 dB per octave
zero frequency delay
0.7831/Fc
z.f. phase line (used in Figure 6)
-281.92deg x f/Fc
mean phase line (used in Figure 9)
-326.32deg x f/Fc
best phase line (used in Figure 8)
-335.64deg x f/Fc
attenuation:
0.1dB
0.989Fc
0.25dB
0.996Fc
0.5dB
1.005Fc
1dB
1.016Fc
3dB
1.042Fc
6dB
1.068Fc
12dB
1.11Fc
18dB
1.151Fc
24dB
1.194Fc
36dB
1.282Fc
48dB
1.366Fc
60dB
1.438Fc
72dB
1.487Fc
84dB
[2.367Fc]
96dB
[2.544Fc]
overshoot
19.81% at 1.4/Fc
risetime to 0.996Vin
1.142/Fc
approximate settling time to 9 bits
9.9/Fc
add on for each subsequent bit:
1.427/Fc
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