Datasheet

AD8421 Data Sheet
Rev. 0 | Page 18 of 28
50mV/DIV
GAIN = 10
1µs/DIV
10123-047
Figure 52. Small Signal Pulse Response (G = 10), R
L
= 600 Ω, C
L
= 100 pF
20mV/DIV
GAIN = 100
1µs/DIV
10123-048
Figure 53. Small Signal Pulse Response (G = 100), RL = 600 Ω, CL = 100 pF
20mV/DIV
GAIN = 1000
2µs/DIV
10123-049
Figure 54. Small Signal Pulse Response (G = 1000), R
L
= 600 Ω, C
L
= 100 pF
10123-053
G = 1
NO LOAD
20pF
50pF
100pF
50mV/DIV 1µs/DIV
Figure 55. Small Signal Response with Various Capacitive Loads (G = 1),
R
L
= Infinity
–
40
–150
10 10k1k100
AMPLITUDE (dBc)
FREQUENCY (Hz)
10123-055
–140
–130
–120
–110
–100
–90
–80
–70
–60
–50
R
L
≥ 600Ω
V
OUT
= 10V p-p
Figure 56. Second Harmonic Distortion vs. Frequency (G = 1)
–
40
–150
10 10k1k100
AMPLITUDE (dBc)
FREQUENCY (Hz)
10123-056
–140
–130
–120
–110
–100
–90
–80
–70
–60
–50
NO LOAD
R
L
= 2kΩ
R
L
= 600Ω
V
OUT
= 10V p-p
Figure 57. Third Harmonic Distortion vs. Frequency (G = 1)