Linear Technology LTC2170-12, Manual, Page: 16 / 34

LTC2172-12/
LTC2171-12/LTC2170-12
16
21721012fb
INPUT FREQUENCY (MHz)
0
90
85
80
75
70
65
95
SFDR (dBFS)
50 100 150 200 250 300 350
217212 G37
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
217212 G52
dBFS
dBc
SENSE PIN (V)
0.6
71
68
69
70
67
66
72
SNR (dBFS)
0.7 0.8 0.9 1.1 1.2 1.3 1.0
217212 G55a
LTC2170-12: SFDR vs Input Level,
f
IN
= 70MHz, 2V Range, 25Msps
LTC2170-12: SFDR vs Input
Frequency, –1dBFS, 2V Range,
25Msps
LTC2170-12: I
VDD
vs Sample Rate,
5MHz Sine Wave Input, –1dBFS
LTC2170-12: SNR vs SENSE,
f
IN
= 5MHz, –1dBFS
Typical perForMance characTerisTics
LTC2170-12: SNR vs Input
Frequency, –1dBFS, 2V Range,
25Msps
INPUT FREQUENCY (MHz)
0
72
71
70
69
68
67
66
SNR (dBFS)
50
100 150 200 250 300 350
217212 G49
SERIAL DATA RATE (Mbps)
350
300
250
200
150
100
50
0
PEAK-TO-PEAK JITTER (ps)
0 200 400 600 800 1000
217212 G52
SAMPLE RATE (Msps)
80
75
70
65
60
I
VDD
(mA)
0 5 10 15 25 20
217212 G55
DCO Cycle-Cycle Jitter vs Serial
Data Rate