Datasheet

LTC2157-12/
LTC2156-12/LTC2155-12
12
21576512f
TYPICAL PERFORMANCE CHARACTERISTICS
LTC2155-12: 32K Point FFT,
f
IN
= 15MHz, –1dBFS, 170Msps
LTC2155-12: 32K Point FFT,
f
IN
= 70MHz, –1dBFS, 170Msps
LTC2155-12: 32K Point FFT,
f
IN
= 121MHz, –1dBFS, 170Msps
LTC2155-12: Integral Nonlinearity
(INL)
LTC2155-12: Differential
Nonlinearity (DNL)
LTC2156-12: Frequency Response
LTC2156-12: SFDR vs Input
Frequency, –1dBFS, 1.5V Range,
210Msps
LTC2156-12: SNR vs Input
Frequency, –1dBFS, 1.5V Range,
210Msps
LTC2156-12: SNR vs Input Level,
f
IN
= 70MHz, 1.5V Range, 210 Msps
AMPLITUDE (dBFS)
0
SNR (dBFS)
10
50
40
60
70
–50
–30
0
21576512 G37
30
20
dBFS
dBc
–60 –40
–20
–10
INPUT FREQUENCY (MHz)
0
SFDR (dBFS)
50
40
60
70
800
21576512 G38
20
30
10
0
200
400
500
1000
90
80
600
100
300
900
700
INPUT FREQUENCY (MHz)
0
SNR (dBFS)
55
50
60
65
800
21576512 G39
45
40
200
400
500
1000
75
70
600
100
300
900
700
INPUT FREQUENCY (MHz)
–5.0
INPUT AMPLITUDE (dBFS)
–4.5
–3.5
–3.0
–2.5
1000
–0.5
21576512 G40
–4.0
100
–2.0
–1.5
–1.0
OUTPUT CODE
0
–2.0
–1.5
–1.0
–0.5
INL ERROR (LSB)
0
0.5
2.0
1.5
1.0
4095
21576512 G41
OUTPUT CODE
0
–0.50
–0.25
DNL ERROR (LSB)
0
0.25
0.50
4095
21576512 G42
FREQUENCY (MHz)
0
–120
AMPLITUDE (dBFS)
–100
–80
–60
–40
0
20
40 60
10
30 50 70
21576512 G43
80
–20
FREQUENCY (MHz)
0
–120
AMPLITUDE (dBFS)
–100
–80
–60
–40
0
20
40 60
10
30 50 70
21576512 G44
80
–20
FREQUENCY (MHz)
0
–120
AMPLITUDE (dBFS)
–100
–80
–60
–40
0
20
40 60
10
30 50 70
21576512 G45
80
–20