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ADA4320-1ACPZ-R2 Datasheet(PDF) 10 Page - Analog Devices

Part # ADA4320-1ACPZ-R2
Description  High Power, Low Distortion Upstream
PDF  16 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADA4320-1ACPZ-R2 Datasheet(HTML) 10 Page - Analog Devices

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ADA4320-1
Rev. 0 | Page 10 of 16
–24
–28
–32
–36
–40
–44
–48
–52
–56
–60
–64
–68
–72
25
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
INPUT LEVEL (dBmV)
CURRENT LEVEL 0
CURRENT LEVEL 1
CURRENT LEVEL 2
CURRENT LEVEL 3
SINGLE QPSK CHANNEL
GAIN CODE 42 (14dB)
CHANNEL WIDTH = 6.4MHz
DRIVEN CHANNEL CENTER = 42 MHz
ADJACENT CHANNEL WIDTH = 6.4 MHz
ADJACENT CHANNEL CENTER = 48.4 MHz
Figure 17. ACPR vs. Input Level for a Single QPSK Channel
–10
–80
–70
–60
–50
–40
–30
–20
59
71
70
69
68
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66
65
64
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62
61
60
OUTPUT LEVEL (dBmV)
CURRENT LEVEL 0
CURRENT LEVEL 1
CURRENT LEVEL 2
CURRENT LEVEL 3
SINGLE QPSK CHANNEL
GAIN CODE 60 (MAXIMUM)
CHANNEL WIDTH = 6.4MHz
DRIVEN CHANNEL CENTER = 42MHz
ADJACENT CHANNEL WIDTH = 6.4MHz
ADJACENT CHANNEL CENTER = 48.4MHz
Figure 18. ACPR vs. Output Level for a Single QPSK Channel
8
6
–8
–6
–4
–2
0
2
4
–2
18
14
16
12
10
8
6
4
2
0
TIME (µs)
4× QAM64 CHANNELS (UNCORRELATED)
OUTPUT LEVEL = 53dBmV/CHANNEL
CHANNEL WIDTH = 1.6MHz
CHANNEL CENTERS = 39.6MHz, 41.2MHz, 42.8MHz, 44.4MHz)
TXEN
PEAK OUTPUT
ENVELOPE
Figure 19. Transmit Enable/Disable Response
–22
–70
–64
–58
–52
–46
–40
–34
–28
12
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29 30
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13
INPUT LEVEL (dBmV/CHANNEL)
CURRENT LEVEL 0
CURRENT LEVEL 1
CURRENT LEVEL 2
CURRENT LEVEL 3
4× QAM64 CHANNELS (UNCORRELATED)
GAIN CODE 42 (14dB)
CHANNEL WIDTH = 1.6MHz
DRIVEN CHANNEL CENTER = 77.8MHz, 79.4MHz,
81.0MHz, 82.6MHz
ADJACENT CHANNEL WIDTH = 1.6MHz
ADJACENT CHANNEL CENTER = 84.2MHz
Figure 20. ACPR vs. Input Level for 4× QAM64 Channels
–10
–80
–70
–60
–50
–40
–30
–20
44
62
60
58
56
54
52
50
48
46
OUTPUT LEVEL (dBmV/CHANNEL)
CURRENT LEVEL 0
CURRENT LEVEL 1
CURRENT LEVEL 2
CURRENT LEVEL 3
4× QAM64 CHANNELS (UNCORRELATED)
GAIN CODE 60 (MAXIMUM)
CHANNEL WIDTH = 1.6MHz
DRIVEN CHANNEL CENTER = 77.8MHz, 79.4MHz,
81.0MHz, 82.6MHz
ADJACENT CHANNEL WIDTH = 1.6MHz
ADJACENT CHANNEL CENTER = 84.2MHz
Figure 21. ACPR vs. Output Level for 4x QAM64 Channels
120
100
80
60
40
20
0
06
48
54
42
36
30
24
18
12
6
GAIN CODE
0
TXEN = 1
TXEN = 0
DOCSIS 3.0 LIMIT (FOR 29dBmV INPUT)
Figure 22. Output Glitch Amplitude vs. Gain Code



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