ada4937-2 Analog Devices, Inc., ada4937-2 Datasheet - Page 11

• Manufacturer Part Number: ada4937-2
• Description: Ultralow Distortion Differential Adc Driver
• Manufacturer: Analog Devices, Inc.

Figure 21. Harmonic Distortion vs. Frequency and Supply Voltage
–12
–0.1
–0.2
–0.3
–0.4
–0.5
–100
–105
–110
–115
–3
–6
–9
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
–55
–60
–65
–70
–75
–80
–85
–90
–95
3
0
0
1
1
Figure 20. 0.1 dB Flatness Response for Various Loads
1
Figure 19. Small Signal Frequency Response
R
R
R
R
L
L
L
L
V
V
V
HD2, V
HD3, V
HD2, V
HD3, V
= 1kΩ, ADA4937-1
= 100Ω, ADA4937-1
= 1kΩ, ADA4937-2
= 100Ω, ADA4937-2
OCM
OCM
OCM
= 1.0V
= 2.5V
= 3.9V
S
S
S
S
= 5.0V
= 5.0V
= 3.3V
= 3.3V
10
10
for Various V
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
10
OCM
100
100
100
1000
1000
Rev. A | Page 11 of 28
–100
–110
–120
–130
–100
–110
–120
–100
–110
–120
–50
–60
–70
–80
–90
–50
–60
–70
–80
–90
–50
–60
–70
–80
–90
Figure 24. Harmonic Distortion vs. V
Figure 22. Harmonic Distortion vs. Frequency and Gain
Figure 23. Harmonic Distortion vs. Frequency and Load
–1
1
1
0
HD2, V
HD3, V
HD2, V
HD3, V
HD2, G = +1, R
HD3, G = +1, R
HD2, G = +2, R
HD3, G = +2, R
HD2, R
HD3, R
HD2, R
HD3, R
S
S
S
S
L
L
L
L
1
= 3.3V
= 3.3V
= 5.0V
= 5.0V
= 1kΩ
= 1kΩ
= 200Ω
= 200Ω
ADA4937-1/ADA4937-2
FREQUENCY (MHz)
FREQUENCY (MHz)
F
F
F
F
2
= 200Ω
= 200Ω
= 402Ω
= 402Ω
10
10
V
OUT
3
(V)
OUT
4
and Supply Voltage
5
100
100
6
7