Datasheet

Data Sheet ADA4940-1/ADA4940-2
Rev. C | Page 13 of 32
4
–9
1 10 100 1000
GAIN (dB)
FREQUENCY (MHz)
–8
–7
–6
–5
–4
–3
–2
–1
0
1
2
3
C
DIFF
= 0pF
V
OUT
= 0.1V p-p
C
COM1
= C
COM2
= 2pF
C
COM1
= C
COM2
= 0.5pF
C
COM1
= C
COM2
= 1pF
C
COM1
= C
COM2
= 0pF
08452-014
Figure 19. Small Signal Frequency Response for Various Capacitive Loads
(LFCSP)
0.25
–0.25
0.1 10001 10 100
NORMALIZED GAIN (dB)
FREQUENCY (MHz)
–0.20
–0.15
–0.10
–0.05
0
0.05
0.10
0.15
0.20
V
OUT, dm
= 0.1V p-p
G = 2, R
L
= 200Ω
G = 2, R
L
= 1kΩ
G = 1, R
L
= 200Ω
G = 1, R
L
= 1kΩ
08452-018
Figure 20. 0.1 dB Flatness Small Signal Frequency Response for
Various Gains and Loads (LFCSP)
3
–9
1 10 100 1000
GAIN (dB)
FREQUENCY (MHz)
–8
–7
–6
–5
–4
–3
–2
–1
0
1
2
V
S
= ±1.5V
V
S
= ±2.5V
08452-019
V
OUT, dm
= 0.1V p-p
Figure 21. V
OCM
Small Signal Frequency Response for Various Supplies
4
–9
1 10 100 1000
GAIN (dB)
FREQUENCY (MHz)
–8
–7
–6
–5
–4
–3
–2
–1
0
1
2
3
C
COM1
= C
COM2
= 0pF
C
COM1
= C
COM2
= 0.5pF
C
COM1
= C
COM2
= 1pF
C
COM1
= C
COM2
= 2pF
C
DIFF
= 0pF
V
OUT
= 2V p-p
08452-017
Figure 22. Large Signal Frequency Response for Various Capacitive Loads
0.25
–0.25
0.1 10001 10 100
NORMALIZED GAIN (dB)
FREQUENCY (MHz)
–0.20
–0.15
–0.10
–0.05
0
0.05
0.10
0.15
0.20
V
OUT, dm
= 2V p-p
G = 1, R
L
= 1kΩ
G = 1, R
L
= 200Ω
G = 2, R
L
= 1kΩ
G = 2, R
L
= 200Ω
08452-021
Figure 23. 0.1 dB Flatness Large Signal Frequency Response for
Various Gains and Loads
3
–9
1
10 100 1000
GAIN (dB)
FREQUENCY (MHz)
–8
–7
–6
–5
–4
–3
–2
–1
0
1
2
V
S
= ±1.5V
V
S
= ±2.5V
08452-022
V
OUT, dm
= 1V p-p
Figure 24. V
OCM
Large Signal Frequency Response for Various Supplies