TYPICAL PERFORMANCE CHARACTERISTICS
LTC2285
SNR vs Input Frequency,
–1dB, 2V Range, 125Msps
75
74
73
72
71
70
69
68
67
66
65
0
50 100 150 200 250 300 350
INPUT FREQUENCY (MHz) 2285 G10
SFDR vs Input Frequency,
–1dB, 2V Range, 125Msps
100
95
90
85
80
75
70
65
0 50 100 150 200 250 300 350
INPUT FREQUENCY (MHz) 2285 G11
SNR and SFDR vs Sample Rate,
2V Range, fIN = 5MHz, –1dB
90
SFDR
80
SNR
70
60
50
0
20 40 60 80 100 120 140 160
SAMPLE RATE (Msps)
2285 G12
SNR vs Input Level,
fIN = 70MHz, 2V Range, 125Msps
80
dBFS
70
60
50
dBc
40
30
20
10
0
–70 –60
–50 –40 –30 –20 –10 0
INPUT LEVEL (dBFS)
2285 G13
SFDR vs Input Level,
fIN = 70MHz, 2V Range, 125Msps
110
100
dBFS
90
80
70
60
dBc
50
40
30
20
10
0
–80 –70 –60 –50 –40 –30 –20 –10 0
INPUT LEVEL (dBFS)
2285 G14
IVDD vs Sample Rate,
5MHz Sine Wave Input, –1dB
290
280
270
260
250
2V RANGE
240
1V RANGE
230
220
210
200
190
0
20 40 60 80 100 120 140
SAMPLE RATE (Msps)
2285 G15
IOVDD vs Sample Rate, 5MHz Sine
Wave Input, –1dB, 0VDD = 1.8V
16
14
12
10
8
6
4
2
0
0 20 40 60 80 100 120 140
SAMPLE RATE (Msps)
2285 G16
SNR vs SENSE, fIN = 5MHz, –1dB
74
73
72
71
70
69
68
67
66
65
64
0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1
SENSE PIN (V)
2285 G17
2285fb
7