Datasheet

LTC2258-14
LTC2257-14/LTC2256-14
14
225814fc
For more information www.linear.com/LTC2258-14For more information www.linear.com/LTC2258-14
Typical perForMance characTerisTics
LTC2256-14: SFDR vs Input Level,
f
IN
= 70MHz, 2V Range, 25Msps
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
225814 G52
dBFS
dBc
INPUT FREQUENCY (MHz)
0
72
71
70
69
68
67
66
74
73
SNR (dBFS)
50
100 150 200 250 300 350
225814 G49
INPUT FREQUENCY (MHz)
0
90
85
80
75
70
65
95
SFDR (dBFS)
50
100 150 200 250 300 350
225814 G50
LTC2256-14: SNR vs Input
Frequency, –1dB, 2V Range,
25Msps
LTC2256-14: SFDR vs Input
Frequency, –1dB, 2V Range,
25Msps
LTC2256-14: I
VDD
vs Sample Rate,
5MHz Sine Wave Input, –1dB
LTC2256-14: I
OVDD
vs Sample Rate,
5MHz Sine Wave Input, –1dB, 5pF
on Each Data Output
LTC2256-14: SNR vs SENSE,
f
IN
= 5MHz, –1dB
SAMPLE RATE (Msps)
0
25
10
15
20
5
0
45
30
35
40
I
OVDD
(mA)
10 20
225814 G54
1.75mA LVDS
1.8V CMOS
1.2V CMOS
3.5mA LVDS
SAMPLE RATE (Msps)
0
15
20
25
I
VDD
(mA)
10 20
225814 G53
LVDS OUTPUTS
CMOS OUTPUTS
SENSE PIN (V)
0.6
71
68
69
70
67
66
72
73
74
SNR (dBFS)
0.7 0.8 0.9 1.1 1.2 1.31
225814 G55