ADA4938-2_15 Datasheet, PDF (11/28 Pages) Analog Devices – Ultralow Distortion Differential ADC Driver

6
3
0
–3
–6
–9
–12
1
G = +1
G = +2
G = +3.16
G = +5
10
100
FREQUENCY (MHz)
1000
Figure 19. Small Signal Frequency Response for Various Gains, RF = 402 Ω,
VS = 5 V, VOUT = 0.1 V p-p
3
0
–3
–6
–9
–12
1
V_S = +5V
V_S = ±5V
10
100
FREQUENCY (MHz)
1000
Figure 20. VOUT, cm Small Signal Frequency Response, VOUT = 0.1 V p-p
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
–0.1
–0.2
–0.3
–0.4
–0.5
–0.6
–0.7
–0.8
–0.9
–1.0
1
R_{L, dm} = 1kΩ
R_{L, dm} = 100Ω
R_{L, dm} = 200Ω
10
100
FREQUENCY (MHz)
1000
Figure 21. 0.1 dB Flatness Response for Various Loads, ADA4938-1,
VOUT = 0.1 V p-p
ADA4938-1/ADA4938-2
6
3
0
–3
–6
–9
–12
1
G = +1
G = +2
G = +3.16
G = +5
10
100
FREQUENCY (MHz)
1000
Figure 22. Large Signal Frequency Response for Various Gains, RF = 402 Ω,
VS = 5 V
3
0
–3
–6
–9
–12
1
V_S = +5V
V_S = ±5V
10
100
FREQUENCY (MHz)
1000
Figure 23. VOUT, cm Large Signal Frequency Response
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
–0.1
–0.2
–0.3
–0.4
–0.5
1
R_{L, dm} = 1kΩ
R_{L, dm} = 100Ω
R_{L, dm} = 200Ω
10
100
FREQUENCY (MHz)
1000
Figure 24. 0.1 dB Flatness Response for Various Loads, ADA4938-2,
VOUT = 0.1 V p-p
Rev. A | Page 11 of 28