LTC2195_15 Datasheet, PDF (11/28 Pages) Linear Technology – 16-Bit, 125/105/80Msps Low Power Dual ADCs

TYPICAL PERFORMANCE CHARACTERISTICS
LTC2195
LTC2194/LTC2193
LTC2194: 64k Point FFT,
f_IN = 30MHz, –1dBFS, 105Msps
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
0
10
20
30
40
50
FREQUENCY (MHz)
219543 G19
LTC2194: 64k Point 2-Tone FFT,
f_IN = 69MHz, 70MHz, –7dBFS,
105Msps
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
0
10
20
30
40
50
FREQUENCY (MHz)
219543 G22
LTC2194: 2nd, 3rd Harmonic
vs Input Frequency, –1dBFS,
105Msps, 2V Range
100
95
90
3RD
85
80
2ND
75
70
65
0 50 100 150 200 250 300
INPUT FREQUENCY (MHz)
219543 G25
LTC2194: 64k Point FFT,
f_IN = 70MHz, –1dBFS, 105Msps
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
0
10
20
30
40
50
FREQUENCY (MHz)
219543 G20
LTC2194: Shorted Input Histogram
10000
9000
8000
7000
6000
5000
4000
3000
2000
1000
0
32790
32796 32802 32808
OUTPUT CODE
32814
219543 G23
LTC2194: 2nd, 3rd Harmonic
vs Input Frequency, –1dBFS,
105Msps, 1V Range
100
95
3RD
90
85
2ND
80
75
70
65
0 50 100 150 200 250 300
INPUT FREQUENCY (MHz)
219543 G26
LTC2194: 64k Point FFT,
f_IN = 140MHz, –1dBFS, 105Msps
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
0
10
20
30
40
50
FREQUENCY (MHz)
219543 G21
LTC2194: SNR vs Input Frequency,
–1dBFS, 105Msps, 2V Range
78
77
SINGLE-ENDED
ENCODE
76
75
74
DIFFERENTIAL
ENCODE
73
72
71
70
0 50 100 150 200 250 300
INPUT FREQUENCY (MHz)
219543 G24
LTC2194: SFDR vs Input Level,
f_IN = 70MHz, 105Msps, 2V Range
130
120
dBFS
110
100
90
80
dBc
70
60
50
40
30
20
–80 –70 –60 –50 –40 –30 –20 –10 0
INPUT LEVEL (dBFS)
219543 G27
219543f
11