LTC2245
6
2245fa
TYPICAL PERFOR A CE CHARACTERISTICS
UW
8192 Point FFT, fIN = 70.1MHz,
–1dB, 2V Range
Grounded Input Histogram
SNR vs Input Frequency, –1dB,
2V Range
8192 Point 2-Tone FFT,
fIN = 4.3MHz and 4.6MHz,
–1dB, 2V Range
SFDR vs Input Frequency, –1dB,
2V Range
SNR and SFDR vs Sample Rate,
2V Range, fIN = 5MHz, –1dB
FREQUENCY (MHz)
0
AMPLITUDE
(dB)
–60
–40
–20
0
4
2245 G04
–80
–100
–70
–50
–30
–10
–90
–110
–120
1
2
3
5
FREQUENCY (MHz)
0
AMPLITUDE
(dB)
–60
–40
–20
0
4
2245 G05
–80
–100
–70
–50
–30
–10
–90
–110
–120
1
2
3
5
CODE
25000
20000
15000
10000
5000
0
8182
8181
6919
22016
8186
8185
8184
13373
8183
2245 G06
8180
8179
43
853
278
3227
COUNT
18803
INPUT FREQUENCY (MHz)
0
65
SNR
(dBFS)
66
68
69
70
75
72
20
40
50
2245 G07
67
73
74
71
10
30
60
70
INPUT FREQUENCY (MHz)
0
85
90
100
30
50
2245 G08
80
75
10
20
40
60
70
65
95
SFDR
(dBFS)
SAMPLE RATE (Msps)
0
60
SNR
AND
SFDR
(dBFS)
70
80
90
100
SFDR
SNR
2468
2225 G09
10
12
14
SNR vs Input Level, fIN = 5MHz,
2V Range
SFDR vs Input Level, fIN = 5MHz,
2V Range
INPUT LEVEL (dBFS)
–70
SNR
(dBc
AND
dBFS)
dBFS
dBc
–40
2245 G10
40
20
–60
–50
–30
10
0
80
70
60
50
30
–20
–10
0
INPUT LEVEL (dBFS)
–80
SFDR
(dBc
AND
dBFS)
40
100
110
120
dBFS
dBc
–20
2245 G11
20
10
80
60
30
90
0
70
50
–60
–40
0
100dBc SFDR
REFERENCE LINE