
LTC6601-1
APPLICATIONS INFORMATION
VIN
ZIN(DIFF) = 400
20 19 18 17 16
LTC6601-1
1
15
24.9Ω
2
+
49.9Ω
4
–
5
VIN
VOUT(DIFF) ZIN(DIFF) = 250
11
24.9Ω
6 7 8 9 10
GAIN = 1
fO = 16.04MHz
Q = 0.56
f–3dB = 15MHz
20 19 18 17 16
LTC6601-1
1
15
2
+
4
–
VOUT(DIFF)
5
11
6 7 8 9 10
GAIN = 1.6
fO = 16.04MHz
Q = 0.66
f–3dB = 15MHz
VIN
ZIN(DIFF) = 164
20 19 18 17 16
LTC6601-1
1
15
24.9Ω
2
+
24.9Ω
4
–
VOUT(DIFF)
5
11
6 7 8 9 10
GAIN = 2.6
fO = 16.04MHz
Q = 0.66
f–3dB = 15MHz
66011 F17a
Gain Magnitude vs Frequency (Gain = 1)
10
0
–10
–20
–30
–40
–50
100k
1M
10M
FREQUENCY (Hz)
100M
66011 F17b
Passband Phase and Group Delay
30
0 PHASE
–30
–60
–90
–120
50
40
30
GROUP DELAY
20
10
0
100k
0
4M 8M 12M 16M 20M
FREQUENCY (Hz)
66011 F17c
Figure 17. Modified Filter Configuration Using a Resistor Between Summing Nodes (f–3dB = 15MHz)
66011f
36