Datasheet

14
22654312fb
LTC2265-12/
LTC2264-12/LTC2263-12
TYPICAL PERFORMANCE CHARACTERISTICS
LTC2264-12: 8k Point FFT,
f
IN
= 69MHz, –1dBFS, 40Msps
LTC2264-12: 8k Point FFT,
f
IN
= 139MHz, –1dBFS, 40Msps
LTC2264-12: 8k Point 2-Tone FFT,
f
IN
= 68MHz, 69MHz, –1dBFS,
40Msps
FREQUENCY (MHz)
0
–100
–110
–120
–70
–60
–80
–90
AMPLITUDE (dBFS)
–50
–30
–40
–20
–10
0
10
20
226512 G20
FREQUENCY (MHz)
0
–100
–110
–120
–70
–60
–80
–90
AMPLITUDE (dBFS)
–50
–30
–40
–20
–10
0
10
20
226512 G21
FREQUENCY (MHz)
0
–100
–110
–120
–70
–60
–80
–90
AMPLITUDE (dBFS)
–50
–30
–40
–20
–10
0
10
20
226512 G22
LTC2264-12: Shorted Input
Histogram
LTC2264-12: SNR vs Input
Frequency, –1dBFS, 2V Range,
40Msps
LTC2264-12: SFDR vs Input
Frequency, –1dBFS, 2V Range,
40Msps
OUTPUT CODE
2049
2000
0
6000
4000
COUNT
8000
16000
14000
12000
10000
18000
2051 20522050 2053
226512 G23
INPUT FREQUENCY (MHz)
0
72
71
70
69
68
67
66
SNR (dBFS)
50
100 150 200 250 300 350
226512 G24
INPUT FREQUENCY (MHz)
0
90
85
80
75
70
65
95
SFDR (dBFS)
50
100 150 200 250 300 350
226512 G25
LTC2264-12: I
VDD
vs Sample Rate,
5MHz Sine Wave Input, –1dBFS
LTC2264-12: SFDR vs Input Level,
f
IN
= 70MHz, 2V Range, 40Msps
INPUT LEVEL (dBFS)
–80
60
50
40
30
20
10
0
80
70
SFDR (dBc AND dBFS)
90
100
110
–70
–60 –50 –40 –30 –20 –10 0
226512 G26
dBFS
dBc
FREQUENCY (MHz)
0
–100
–110
–120
–70
–60
–80
–90
AMPLITUDE (dBFS)
–50
–30
–40
–20
–10
0
10
20
226512 G19
LTC2264-12: 8k Point FFT,
f
IN
= 29MHz, –1dBFS, 40Msps
SAMPLE RATE (Msps)
60
55
50
45
40
I
VDD
(mA)
0 10 20 30 40
226512 G27