Datasheet

LTC2251/LTC2250
8
22510fa
TYPICAL PERFOR A CE CHARACTERISTICS
UW
LTC2250: 8192 Point FFT,
f
IN
= 30MHz, –1dB, 2V Range,
105Msps
LTC2250: 8192 Point FFT,
f
IN
= 70MHz, –1dB, 2V Range,
105Msps
LTC2250: 8192 Point FFT,
f
IN
= 140MHz, –1dB, 2V Range,
105Msps
LTC2250: 8192 Point 2-Tone FFT,
f
IN
= 28.2MHz and 26.8MHz,
–1dB, 2V Range, 105Msps
LTC2250: SNR vs Input Frequency,
–1dB, 2V Range, 105Msps
FREQUENCY (MHz)
AMPLITUDE (dB)
22510 G19
0 1020304050
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
LTC2250: 8192 Point FFT,
f
IN
= 5MHz, –1dB, 2V Range,
105Msps
FREQUENCY (MHz)
AMPLITUDE (dB)
22510 G18
0 1020304050
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
LTC2250: Grounded Input
Histogram, 105Msps
FREQUENCY (MHz)
AMPLITUDE (dB)
22510 G20
0 1020304050
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
FREQUENCY (MHz)
AMPLITUDE (dB)
22510 G21
0 1020304050
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
FREQUENCY (MHz)
AMPLITUDE (dB)
22510 G22
0 1020304050
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
CODE
70000
60000
50000
40000
30000
20000
10000
0
511
65528
512
22510 G23
510
0
0
COUNT
INPUT FREQUENCY (MHz)
0
55
SNR (dBFS)
56
58
59
60
65
62
100
200
250
22510 G24
57
63
64
61
50
150
300
350
LTC2250: Typical INL,
2V Range, 105Msps
LTC2250: Typical DNL,
2V Range, 105Msps
CODE
0
INL ERROR (LSB)
768
22510 G16
256 512 1024
1.0
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
CODE
0
DNL ERROR (LSB)
768
22510 G17
256 512 1024
1.0
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0