ada4320-1 Analog Devices, Inc., ada4320-1 Datasheet - Page 9
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ada4320-1
Manufacturer Part Number
ada4320-1
Description
High Power, Low Distortion Upstream Catv Line Driver Ada4320-1
Manufacturer
Analog Devices, Inc.
Datasheet
1.ADA4320-1.pdf
(16 pages)
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Figure 13. ACPR vs. Frequency for Single QPSK Channel
0
5
5
SINGLE QPSK CHANNEL
OUTPUT LEVEL = 61dBmV
GAIN CODE 60 (MAXIMUM)
CHANNEL WIDTH = 6.4MHz
ADJACENT CHANNEL WIDTH = 6.4MHz
Figure 12. Output Return Loss (S22) vs. Frequency
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6
SLEEP
TX DISABLE
TX ENABLE
TXEN = 1, ALL CURRENT LEVELS
TXEN = 0
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Figure 11. Noise Power vs. Gain Code
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25
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FREQUENCY (MHz)
FREQUENCY (MHz)
35
35
24
GAIN CODE
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30
45
45
50
36
55
55
CURRENT LEVEL 0
CURRENT LEVEL 1
CURRENT LEVEL 2
CURRENT LEVEL 3
60
42
65
65
48
70
75
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54
80
60
85
85
Rev. 0 | Page 9 of 16
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Figure 14. Output 1 dB Compression Point vs. Gain Code
Figure 16. ACPR vs. Frequency for 4× QAM64 Channels
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4× QAM64 CHANNELS (UNCORRELATED)
OUTPUT LEVEL = 53dBmV/CHANNEL
GAIN CODE 60 (MAXIMUM)
CHANNEL WIDTH = 1.6MHz
ADJACENT CHANNEL WIDTH = 1.6MHz
6
OUTPUT
Figure 15. ACPR and Output Level vs. Gain Code
ACPR
LEVEL
SINGLE QPSK CHANNEL
INPUT LEVEL = 29dBmV
CURRENT LEVEL 3
CHANNEL WIDTH = 6.4MHz
DRIVEN CHANNEL CENTER = 42MHz
ADJACENT CHANNEL WIDTH = 6.4MHz
ADJACENT CHANNEL CENTER = 48.4MHz
CURRENT LEVEL 3
CURRENT LEVEL 0
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CURRENT LEVEL 0
CURRENT LEVEL 1
CURRENT LEVEL 2
CURRENT LEVEL 3
15
12
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18
25
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24
FREQUENCY (MHz)
GAIN CODE
35
24
GAIN CODE
30
30
45
36
36
55
42
42
48
65
ADA4320-1
48
54
75
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0
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