Datasheet

ADA4939-1/ADA4939-2
Rev. 0 | Page 15 of 24
TEST CIRCUITS
ADA4939
1kΩ
5V
402
Ω
200Ω50Ω
200Ω
0.1µF
0.1µF
402Ω
V
OCM
60.4Ω
V
IN
07429-046
Figure 39. Equivalent Basic Test Circuit, G = 2
ADA4939
+2.5V
0.1µF
–2.5V
402Ω
200Ω50Ω
200Ω
49.9Ω
49.9Ω
NETWORK
ANALYZER
INPUT
AC-COUPLED
NETWORK
ANALYZER
OUTPUT
AC-COUPLED
50Ω
402Ω
49.9Ω
49.9Ω
V
OCM
60.4Ω
60.4Ω
V
IN
07429-047
Figure 40. Test Circuit for Output Balance, CMRR
ADA4939
5V
402
Ω
200Ω50Ω
200Ω
442Ω
442Ω
0.1µF
0.1µF
402Ω
V
OCM
60.4Ω 261Ω
200Ω
2:1
50Ω
CT
V
IN
LOW-PASS
FILTER
0.1µF
0.1µF
DUAL
FILTER
07429-048
Figure 41. Test Circuit for Distortion Measurements