ada4950-1 Analog Devices, Inc., ada4950-1 Datasheet - Page 13

• Manufacturer Part Number: ada4950-1
• Description: Low Power, Selectable Gain Differential Adc Driver, G = 1, 2, 3
• Manufacturer: Analog Devices, Inc.

–100
–110
–120
–10
–20
–30
–40
–50
–60
–70
–10
–20
–30
–40
–50
–60
–70
–80
–90
10
–45
–47
–49
–51
–53
–55
–57
–59
–61
–63
–65
0
0
29.6
1M
1
V
Figure 31. 30 MHz Intermodulation Distortion
OUT, dm
V
29.7
R
V
OUT, dm
Figure 33. Output Balance vs. Frequency
IN
L, dm
= 2V p-p
29.8
Figure 32. CMRR vs. Frequency
= 2V
= 200Ω
= 2V p-p
p-p
10M
29.9
10
FREQUENCY (MHz)
FREQUENCY (Hz)
FREQUENCY (MHz)
30.0
30.1
100M
30.2
100
30.3
30.4
30.5
1G
1000
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–20
–40
–60
–80
80
60
40
20
0
1k
–100
–120
–100
–120
–140
–20
–40
–60
–80
–20
–40
–60
–80
0
0
Figure 34. Open-Loop Gain and Phase vs. Frequency
1
1
10k
Figure 36. Crosstalk vs. Frequency, ADA4950-2
R
V
AMPLIFIER 2 TO
IN, dm
R
V
L, dm
IN, dm
L, dm
AMPLIFIER 1
100k
= 200Ω
= 100mV p-p
Figure 35. PSRR vs. Frequency
= 200Ω
= 2V p-p
PSRR+
FREQUENCY (Hz)
10
10
1M
FREQUENCY (MHz)
FREQUENCY (MHz)
ADA4950-1/ADA4950-2
PHASE
PSRR–
10M
GAIN
AMPLIFIER 1 TO
AMPLIFIER 2
100M
100
100
1G
10G
90
45
0
–45
–90
–135
–180
–225
–270
1000
1000