Datasheet

ADA4941-1
Rev. C | Page 9 of 24
2
–16
–15
–14
–13
–12
1 100
FREQUENCY (MHz)
NORMALIZED CLOSED-LOOP GAIN (dB)
1
0
–1
–2
–3
–11
–4
–5
–6
–7
–8
–9
–10
10
G = +4
G = +10
G = +2
G = –2
V
O, dm
= 0.1V p-p
05704-010
Figure 11. Small Signal Frequency Response for Various Gains
2
–16
–15
–14
–13
–12
1 10010 1000
FREQUENCY (MHz)
NORMALIZED CLOSED-LOOP GAIN (dB)
1
0
–1
–2
–3
–11
–4
–5
–6
–7
–8
–9
–10
C
L
= 0pF
C
L
= 20pF
V
O, dm
= 0.1V p-p
05704-011
Figure 12. Small Signal Frequency Response for Various Capacitive Loads
2
–16
–15
–14
–13
–12
1 10 1000
FREQUENCY (MHz)
NORMALIZED CLOSED-LOOP GAIN (dB)
1
0
–1
–2
–3
–11
–4
–5
–6
–7
–8
–9
–10
VREF = 0.05V p-p
V
S
= +5V
V
S
= ±5V
V
S
= +3V
05704-012
Figure 13. REF Input Small Signal Frequency Response for Various Supplies
2
–16
–15
–14
–13
–12
1 10 1000
FREQUENCY (MHz)
NORMALIZED CLOSED-LOOP GAIN (dB)
1
0
–1
–2
–3
–11
–4
–5
–6
–7
–8
–9
–10
100
G = +4
G = +10
G = +2
G = –2
V
O, dm
= 2V p-p
05704-013
Figure 14. Large Signal Frequency Response for Various Gains
2
–16
–15
–14
–13
–12
0.1 101 1000
FREQUENCY (MHz)
NORMALIZED GAIN (dB)
1
0
–1
–2
–3
–
11
–4
–5
–6
–7
–8
–9
–10
100
V
O, dm
= 2V p-p
V
O, dm
= 6V p-p
V
O, dm
= 0.1V p-p
05704-014
Figure 15. Frequency Response for Various Output Amplitudes
–70
–140
0.1 101 1000
FREQUENCY (kHz)
DISTORTION (dBc)
100
05704-015
HD3
HD2
HD2
R
L
= 2kΩ
R
L
= 1kΩ
R
L
= 500Ω
V
O, dm
= 2V p-p
VREF = MIDSUPPLY
–80
–90
–100
–110
–120
–130
Figure 16. Distortion vs. Frequency for Various Loads