Datasheet

LTC2172-14/
LTC2171-14/LTC2170-14
14
21721014fb
Typical perForMance characTerisTics
LTC2171-14: 8k Point FFT,
f
IN
= 69MHz, –1dBFS, 40Msps
LTC2171-14: 8k Point FFT,
f
IN
= 139MHz, –1dBFS, 40Msps
LTC2171-14: 8k Point 2-Tone FFT,
f
IN
= 68MHz, 69MHz, –1dBFS,
40Msps
LTC2171-14: I
VDD
vs Sample Rate,
5MHz Sine Wave Input, –1dBFS
LTC2171-14: Shorted Input
Histogram
LTC2171-14: SFDR vs Input Level,
f
IN
= 70MHz, 2V Range, 40Msps
LTC2171-14: SNR vs Input
Frequency, –1dBFS,
2V Range, 40Msps
LTC2171-14: SFDR vs Input
Frequency, –1dBFS, 2V Range,
40Msps
FREQUENCY (MHz)
0
–100
–110
–120
–70
–60
–80
–90
AMPLITUDE (dBFS)
–50
–30
–40
–20
–10
0
10
20
217214 G19
FREQUENCY (MHz)
0
–100
–110
–120
–70
–60
–80
–90
AMPLITUDE (dBFS)
–50
–30
–40
–20
–10
0
10
20
217214 G20
FREQUENCY (MHz)
0
–100
–110
–120
–70
–60
–80
–90
AMPLITUDE (dBFS)
–50
–30
–40
–20
–10
0
10
20
217214 G21
OUTPUT CODE
8198
1000
0
3000
2000
COUNT
4000
5000
6000
8200
8202 8204 8206
217214 G22
INPUT FREQUENCY (MHz)
0
72
71
70
69
68
67
66
74
73
SNR (dBFS)
50
100 150 200 250 300 350
217214 G23
INPUT FREQUENCY (MHz)
0
90
85
80
75
70
65
95
SFDR (dBFS)
50
100 150 200 250 300 350
217214 G24
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
217214 G25
dBFS
dBc
SAMPLE RATE (Msps)
100
95
90
85
80
75
70
I
VDD
(mA)
0 10 20 30 40
217214 G54
LTC2171-14: 8k Point FFT,
f
IN
= 29MHz, –1dBFS, 40Msps
FREQUENCY (MHz)
0
–100
–110
–120
–70
–60
–80
–90
AMPLITUDE (dBFS)
–50
–30
–40
–20
–10
0
10
20
217214 G18