Datasheet

LTC2248/LTC2247/LTC2246
8
224876fa
TYPICAL PERFOR A CE CHARACTERISTICS
UW
FREQUENCY (MHz)
0
AMPLITUDE (dB)
2247 G04
5101520
0
5101520
0
5101520
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
FREQUENCY (MHz)
AMPLITUDE (dB)
2247 G05
FREQUENCY (MHz)
AMPLITUDE (dB)
2247 G06
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
CODE
8184 8185 8186 818781888189 8190 81918192
546
36
15714
24558
14833
640
4641
30
COUNT
2247 G08
30000
25000
20000
15000
10000
5000
0
INPUT FREQUENCY (MHz)
0
SNR (dBFS)
200
2247 G09
50
100
150
75
74
73
72
71
70
4520
FREQUENCY (MHz)
0
AMPLITUDE (dB)
2247 G07
5 101520
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
SAMPLE RATE (Msps)
0
SNR AND SFDR (dBFS)
110
100
90
80
70
60
80
2247 G11
40
20 60
SNR
SFDR
INPUT FREQUENCY (MHz)
0
100
95
90
85
80
75
70
65
150
2247 G10
50 100 200
SFDR (dBFS)
INPUT LEVEL (dBFS)
–60 –50
SNR (dBc AND dBFS)
–40 –20–30
–10
0
2247 G12
80
70
60
50
40
30
20
10
0
dBFS
dBc
LTC2247: 8192 Point FFT,
f
IN
= 30MHz, –1dB, 2V Range,
40Msps
LTC2247: 8192 Point FFT,
f
IN
= 70MHz, –1dB, 2V Range,
40Msps
LTC2247: 8192 Point FFT,
f
IN
= 140MHz, –1dB, 2V Range,
40Msps
LTC2247: 8192 Point 2-Tone FFT,
f
IN
= 21.6MHz and 23.6MHz,
–1dB, 2V Range, 40Msps
LTC2247: Grounded Input
Histogram, 40Msps
LTC2247: SNR vs Input Frequency,
–1dB, 2V Range, 40Msps
LTC2247: SFDR vs Input Frequency,
–1dB, 2V Range, 40Msps
LTC2247: SNR and SFDR vs
Sample Rate, 2V Range,
f
IN
= 5MHz, –1dB
LTC2247: SNR vs Input Level,
f
IN
= 5MHz, 2V Range, 40Msps