LTC2174-12_15 Datasheet, PDF (13/34 Pages) Linear Technology – 12-Bit, 125Msps/105Msps/ 80Msps Low Power Quad ADCs

LTC2175-12/
LTC2174-12/LTC2173-12
Typical Performance Characteristics
LTC2174-12: 8k Point FFT, f_IN = 30MHz
–1dBFS, 105Msps
LTC2174-12: 8k 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)
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
0
10
20
30
40
50
FREQUENCY (MHz)
217512 G24
LTC2174-12: 8k Point 2-Tone FFT,
f_IN = 70MHz, 75MHz, –1dBFS,
105Msps
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
0 10 20 30 40 50
FREQUENCY (MHz)
217512 G25
LTC2174-12: Shorted Input
Histogram
18000
16000
14000
12000
10000
8000
6000
4000
2000
0
2044
2045
2046
2047
OUTPUT CODE
2048
217512 G27
LTC2174-12: SFDR vs Input
Frequency, –1dB, 2V Range,
105Msps
95
90
85
80
75
70
65
0 50 100 150 200 250 300 350
INPUT FREQUENCY (MHz)
217512 G28
LTC2174-12: SFDR vs Input Level,
f_IN = 70MHz, 2V Range, 105Msps
110
dBFS
100
90
80
70
dBc
60
50
40
30
20
10
0
–80 –70 –60 –50 –40 –30 –20 –10 0
INPUT LEVEL (dBFS)
217512 G23a
217512 G32
LTC2174-12: 8k 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)
217512 G26
LTC2174-12: SNR vs Input
Frequency, –1dB, 2V Range,
105Msps
72
71
70
69
68
67
66
0 50 100 150 200 250 300 350
INPUT FREQUENCY (MHz)
217512 G29
LTC2174-12: I_VDD vs Sample Rate,
5MHz Sine Wave Input, –1dB
230
220
210
200
190
180
170
160
0
25
50
75
SAMPLE RATE (Msps)
100
217512 G54
21754312fa
13