LTC2239IUH 查看數據表（PDF） - Linear Technology
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LTC2239IUH Datasheet PDF : 24 Pages
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LTC2239
TYPICAL PERFOR A CE CHARACTERISTICS
8192 Point FFT, fIN = 30MHz,
–1dB, 2V Range
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
0
5 10 15 20 25 30 35 40
FREQUENCY (MHz)
2239 G04
8192 Point 2-Tone FFT,
fIN = 28.2MHz and 26.8MHz,
–1dB, 2V Range
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
0
5 10 15 20 25 30 35 40
FREQUENCY (MHz)
2239 G07
SFDR vs Input Frequency,
–1dB, 2V Range
100
95
90
85
80
75
70
65
0
50
100
150
200
INPUT FREQUENCY (MHz)
2239 G10
8192 Point FFT, fIN = 70MHz,
–1dB, 2V Range
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
0
5 10 15 20 25 30 35 40
FREQUENCY (MHz)
2239 G05
Grounded Input Histogram
140000
131072
120000
100000
80000
60000
40000
20000
0
0
0
510 511 512
CODE
2239 G08
SNR and SFDR vs Sample Rate,
2V Range, fIN = 5MHz, –1dB
100
90
SFDR
80
70
SNR
60
50
0 10 20 30 40 50 60 70 80 90 100 110
SAMPLE RATE (Msps)
2239 G11
6
8192 Point FFT, fIN = 140MHz,
–1dB, 2V Range
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
0
5 10 15 20 25 30 35 40
FREQUENCY (MHz)
2239 G06
SNR vs Input Frequency,
–1dB, 2V Range
65
64
63
62
61
60
59
58
57
56
55
0
50
100
150
INPUT FREQUENCY (MHz)
200
2239 G09
SNR and SFDR
vs Clock Duty Cycle
90
SFDR: DCS ON
85
80
SFDR: DCS OFF
75
70
65
SNR: DCS ON
60 SNR: DCS OFF
55
30 35 40 45 50 55 60 65 70
CLOCK DUTY CYCLE (%)
2239 G12
2239fa
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