Datasheet

ADA4320-1
Rev. A | Page 9 of 16
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10
–80
–70
–60
–50
–40
–30
–20
06054484236302418126
NOISE POWER IN 160kHz BANDWIDTH (dBmV)
GAIN CODE
TXEN = 1, ALL CURRENT LEVELS
TXEN = 0
08707-013
Figure 11. Noise Power vs. Gain Code
0
–30
–25
–20
–15
–10
–5
585807570656055504540353025201510
OUTPUT RETURN LOSS (dB)
FREQUENCY (MHz)
SLEEP
TX DISABLE
TX ENABLE
08707-012
Figure 12. Output Return Loss (S22) vs. Frequency
–
61
–62
–63
–64
–65
–66
–67
–68
58575655545352515
ADJACENT CHANNEL POWER RATIO (dBc)
FREQUENCY (MHz)
CURRENT LEVEL 0
CURRENT LEVEL 1
CURRENT LEVEL 2
CURRENT LEVEL 3
SINGLE QPSK CHANNEL
OUTPUT LEVEL = 61dBmV
GAIN CODE 60 (MAXIMUM)
CHANNEL WIDTH = 6.4MHz
ADJACENT CHANNEL WIDTH = 6.4MHz
08707-015
Figure 13. ACPR vs. Frequency for Single QPSK Channel
80
20
30
40
50
60
70
0654484236302418126
OUTPUT 1dB COMPRESSION POINT (dBmV)
GAIN CODE
0
CURRENT LEVEL 3
CURRENT LEVEL 0
08707-014
Figure 14. Output 1 dB Compression Point vs. Gain Code
–
40
–80
–75
–70
–65
–60
–55
–50
–45
80
0
10
20
30
40
50
60
70
ADJACENT CHANNEL POWER RATIO (dBc)
OUTPUT LEVEL (dBmV)
0654484236302418126
GAIN CODE
OUTPUT
LEVEL
ACPR
0
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
08707-017
Figure 15. ACPR and Output Level vs. Gain Code
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52
–54
–56
–58
–60
–62
–64
–66
5875655545352515
ADJACENT CHANNEL POWER RATIO (dBc)
FREQUENCY (MHz)
5
CURRENT LEVEL 0
CURRENT LEVEL 1
CURRENT LEVEL 2
CURRENT LEVEL 3
4× QAM64 CHANNELS (UNCORRELATED)
OUTPUT LEVEL = 53dBmV/CHANNEL
GAIN CODE 60 (MAXIMUM)
CHANNEL WIDTH = 1.6MHz
ADJACENT CHANNEL WIDTH = 1.6MHz
08707-016
Figure 16. ACPR vs. Frequency for 4× QAM64 Channels