Datasheet

ADA4940-1/ADA4940-2 Data Sheet
Rev. C | Page 20 of 32
TEST CIRCUITS
ADA4940-1/
ADA4940-2
54.9Ω
475Ω
475Ω
54.9Ω
+2.5V
–2.5V
1kΩ
1kΩ
50Ω
NETWORK
ANALYZER
OUTPUT
NETWORK
ANALYZER
INPUT
1kΩ
1kΩ
V
OCM
52.3Ω
25.5Ω
V
IN
08452-067
50Ω
50Ω
Figure 59. Equivalent Basic Test Circuit
ADA4940-1/
ADA4940-2
+2.5V
–2.5V
1kΩ
1kΩ
50Ω
1kΩ
475Ω
475Ω
1kΩ
V
OCM
52.3Ω
54.9Ω
54.9Ω
100Ω
HP
LP
2:1
50Ω
CT
V
IN
LOW-PASS
FILTER
DC-COUPLED
GENERATOR
DUAL
FILTER
08452-056
25.5Ω
Figure 60. Test Circuit for Distortion Measurements