Datasheet

AD8432 Data Sheet
Rev. C | Page 16 of 32
TEST CIRCUITS
R
SH
C
SH
R
FB
0.1µF
0.1µF
0.1µF
0.1µF
0.1µF
1MHz
(10MHz)
1MHz
(10MHz LPF)
OPL
OPH
SPECTRUM
ANALZYER
R
L
R
L
AD8130
G = 1
475Ω
08341-046
56.2Ω
DUAL FILTER
HP
LP
50Ω
1.7MHz
(10.7MHz)
50Ω
INH
INL
AD8432
LNA1
INH
INL
Figure 57. Harmonic Distortion vs. Resistive Load (R
L
) Measurements
08341-049
DUAL FILTER
1.7MHz
(10.7MHz)
R
SH
C
SH
R
FB
0.1µF
0.1µF
0.1µF
0.1µF
1MHz
(10MHz)
1MHz
(10MHz LPF)
OPL
OPH
R
L
0.1µF
487Ω
487Ω
26.1Ω
1:1
26.1Ω
C
L
C
L
LP
HP
IN
50Ω
50Ω
SPECTRUM
ANALYZER
AD8432
LNA1
INH
INL
Figure 58. Harmonic Distortion vs. Capacitive Load (C
L
) Measurements
08341-047
R
SH
C
SH
R
FB
0.1µF
0.1µF
INH
OPL
OPH
INL
0.1µF
0.1µF
0.1µF
499Ω
5pF
499Ω
5pF
DIFF
PROBE
NETWORK
ANALYZER
IN
OUT
50Ω
50Ω
AD8432
LNA1
Figure 59. Frequency Response Measurements
08341-048
0.1µF
0.1µF
OPL
OPH
0.1µF
0.1µF
AD8129
G = 10
1kΩ
50Ω
1kΩ
SPECTRUM
ANALYZER
AD8432
LNA1
INH
INL
Figure 60. Voltage Noise Measurements