Datasheet

LTC2255/LTC2254
6
22554fa
TYPICAL PERFOR A CE CHARACTERISTICS
UW
LTC2255: 8192 Point FFT,
f
IN
= 5MHz, –1dB, 2V Range,
125Msps
LTC2255: 8192 Point FFT,
f
IN
= 30MHz, –1dB, 2V Range,
125Msps
LTC2255: 8192 Point FFT,
f
IN
= 70MHz, –1dB, 2V Range,
125Msps
LTC2255: 8192 Point FFT,
f
IN
= 140MHz, –1dB, 2V Range,
125Msps
LTC2255: Grounded Input
Histogram, 125Msps
LTC2255: SNR vs Input Frequency,
–1dB, 2V Range, 125Msps
LTC2255: 8192 Point 2-Tone FFT,
f
IN
= 28.2MHz and 26.8MHz,
–1dB, 2V Range, 125Msps
LTC2255: Typical DNL,
2V Range, 125Msps
LTC2255: Typical INL,
2V Range, 125Msps
CODE
0
INL ERROR (LSB)
12288
22554 G01
4096 8192 16384
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
FREQUENCY (MHz)
0
AMPLITUDE (dB)
22554 G03
10 20 30 40 50
60
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
FREQUENCY (MHz)
0
AMPLITUDE (dB)
22554 G04
10 20 30 40 50
60
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
CODE
0
DNL ERROR (LSB)
12288
22554 G02
4096 8192 16384
1.0
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
FREQUENCY (MHz)
0
AMPLITUDE (dB)
22554 G05
10 20 30 40 50
60
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
FREQUENCY (MHz)
0
AMPLITUDE (dB)
22554 G06
10 20 30 40 50
60
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
FREQUENCY (MHz)
0
AMPLITUDE (dB)
22554 G07
10 20 30 40 50
60
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
CODE
8181
3
79
26 1
704
419
0
COUNT
5000
10000
15000
20000
25000
8183
8185 8187 8189
22554 G08
8191
3684
11975
20331
18639
6939
2727
INPUT FREQUENCY (MHz)
0
65
SNR (dBFS)
66
68
69
70
75
72
100
200
250
33554 G09
67
73
74
71
50
150
300
350