Datasheet

AD8132
Rev. I | Page 20 of 32
TEST CIRCUITS
0.1µF
348Ω
348Ω
49.9Ω
24.9Ω
348Ω
348Ω
499Ω
C
F
C
F
01035-005
Figure 56. Basic Test Circuit, G = +1
0.1µF
499Ω
499Ω
49.9Ω
24.9Ω
1000Ω
1000Ω
200Ω
01035-014
Figure 57. Basic Test Circuit, G = +2
0.1µF
499Ω
499Ω
49.9Ω
24.9Ω
R
F
200Ω
R
F
01035-019
Figure 58. Test Circuit for Various Gains
0.1µF
49.9Ω
24.9Ω
R
F
R
F
R
G
R
G
R
L
R
L
G = +1: R
F
= R
G
= 348Ω, R
L
= 249Ω (R
L, dm
= 498Ω)
G = +2: R
F
= 1000Ω, R
G
= 499Ω, R
L
= 100Ω (R
L, dm
= 200Ω)
01035-021
Figure 59. Test Circuit for Output Balance
0.1µF
348Ω
348Ω
49.9Ω
24.9Ω
348Ω
348Ω
453Ω
24.9Ω
24.9Ω
C
L
01035-051
Figure 60. Test Circuit for Capacitor Load Drive
348Ω
348Ω
49.9Ω
348Ω
348Ω
249Ω
249Ω
V
O, dm
V
O, cm
NOTES
RESISTORS MATCHED TO 0.01%.
01035-054
Figure 61. CMRR Test Circuit
0.1µF
348Ω
348Ω
49.9Ω
24.9Ω
348Ω
348Ω
300Ω
300Ω
2:1 TRANSFORMER
LPF
HPF
Z
IN
= 50Ω
01035-023
Figure 62. Harmonic Distortion Test Circuit, G = +1, R
L, dm
= 800 Ω
0.1µF
499Ω
499Ω
49.9Ω
24.9Ω
1000
Ω
1000Ω
300Ω
300Ω
2:1 TRANSFORMER
LPF
HPF
Z
IN
= 50Ω
01035-032
Figure 63. Harmonic Distortion Test Circuit, G = +2, R
L, dm
= 800 Ω