Datasheet

9
21454314fa
LTC2145-14/
LTC2144-14/LTC2143-14
TYPICAL PERFORMANCE CHARACTERISTICS
LTC2145-14: Integral
Nonlinearity (INL)
LTC2145-14: Differential
Nonlinearity (DNL)
LTC2145-14: 64k Point FFT,
f
IN
= 5MHz, –1dBFS, 125Msps
LTC2145-14: 64k Point FFT,
f
IN
= 30MHz, –1dBFS, 125Msps
LTC2145-14: 64k Point FFT,
f
IN
= 70MHz, –1dBFS, 125Msps
LTC2145-14: 64k Point FFT,
f
IN
= 140MHz, –1dBFS, 125Msps
LTC2145-14: 64k Point 2-Tone
FFT, f
IN
= 69MHz, 70MHz,
–1dBFS, 125Msps
LTC2145-14: Shorted Input
Histogram
LTC2145-14: SNR vs Input
Frequency, –1dBFS, 125Msps,
2V Range
OUTPUT CODE
–2.0
–1.0
–0.5
–1.5
INL ERROR (LSB)
0.5
0
1.0
1.5
2.0
21454314 G01
0
4096
8192 12288 16384
OUTPUT CODE
–1.0
–0.4
–0.2
–0.6
–0.8
DNL ERROR (LSB)
0
0.4
0.2
0.6
0.8
1.0
21454314 G02
0
4096
8192 12288 16384
FREQUENCY (MHz)
–100
–110
–120
–70
–60
–80
–90
AMPLITUDE (dBFS)
–50
–30
–40
–20
–10
0
21454314 G03
0
10
20 30 40 50 60
FREQUENCY (MHz)
–100
–110
–120
–70
–60
–80
–90
AMPLITUDE (dBFS)
–50
–30
–40
–20
–10
0
21454314 G04
0
10
20 30 40 50 60
FREQUENCY (MHz)
–100
–110
–120
–70
–60
–80
–90
AMPLITUDE (dBFS)
–50
–30
–40
–20
–10
0
21454314 G05
0
10
20 30 40 50 60
FREQUENCY (MHz)
–100
–110
–120
–70
–60
–80
–90
AMPLITUDE (dBFS)
–50
–30
–40
–20
–10
0
21454314 G06
0
10
20 30 40 50 60
FREQUENCY (MHz)
–100
–110
–120
–70
–60
–80
–90
AMPLITUDE (dBFS)
–50
–30
–40
–20
–10
0
21454314 G07
0
10
20 30 40 50 60
OUTPUT CODE
8183
0
COUNT
3000
4000
5000
8185
8187 8189
6000
2000
1000
8191
21454314 G08
INPUT FREQUENCY (MHz)
0
72
71
70
74
73
SNR (dBFS)
50 100 150 200 250 300
21454314 G09
SINGLE-ENDED
ENCODE
DIFFERENTIAL
ENCODE