Datasheet

LTC2157-12/
LTC2156-12/LTC2155-12
10
21576512f
TYPICAL PERFORMANCE CHARACTERISTICS
LTC2156-12: 32K Point FFT,
f
IN
= 15MHz, –1dBFS, 210Msps
LTC2156-12: 32K Point FFT,
f
IN
= 71MHz, –1dBFS, 210Msps
LTC2156-12: 32K Point FFT,
f
IN
= 101MHz, –1dBFS, 210Msps
LTC2156-12: 32K Point FFT,
f
IN
= 171MHz, –1dBFS, 210Msps
LTC2156-12: 32K Point FFT,
f
IN
= 227MHz, –1dBFS, 210Msps
LTC2156-12: Integral Nonlinearity
(INL)
LTC2156-12: Differential
Nonlinearity (DNL)
LTC2157-12: Frequency Response
INPUT FREQUENCY (MHz)
–5.0
INPUT AMPLITUDE (dBFS)
–4.5
–3.5
–3.0
–2.5
1000
–0.5
21576512 G19
–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 G20
OUTPUT CODE
0
–0.50
–0.25
DNL ERROR (LSB)
0
0.25
0.50
4095
21576512 G21
FREQUENCY (MHz)
0
–120
AMPLITUDE (dBFS)
–100
–80
–60
–40
0
20
40 60 80
21576512 G22
100
–20
FREQUENCY (MHz)
0
–120
AMPLITUDE (dBFS)
–100
–80
–60
–40
0
20
40 60 80
21576512 G23
100
–20
FREQUENCY (MHz)
0
–120
AMPLITUDE (dBFS)
–100
–80
–60
–40
0
20
40 60 80
21576512 G24
100
–20
FREQUENCY (MHz)
0
–120
AMPLITUDE (dBFS)
–100
–80
–60
–40
0
20
40 60 80
21576512 G25
100
–20
FREQUENCY (MHz)
0
–120
AMPLITUDE (dBFS)
–100
–80
–60
–40
0
20
40 60 80
21576512 G26
100
–20
LTC2157-12: SNR vs Input
Frequency, –1dBFS, 1.5V Range,
250Msps
INPUT FREQUENCY (MHz)
0
SNR (dBFS)
55
50
60
65
800
21576512 G18
45
40
200
400
500
1000
75
70
600
100
300
900
700