Datasheet

11
225814fc
LTC2258-14
LTC2257-14/LTC2256-14
For more information www.linear.com/LTC2258-14For more information www.linear.com/LTC2258-14
Typical perForMance characTerisTics
LTC2258-14: SFDR vs Input Level,
f
IN
= 70MHz, 2V Range, 65Msps
LTC2258-14: I
VDD
vs Sample Rate,
5MHz Sine Wave Input, –1dB
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 G12
dBFS
dBc
SAMPLE RATE (Msps)
0
45
40
35
30
50
IV
DD
(mA)
20 40 60
225814 G13
LVDS OUTPUTS
CMOS OUTPUTS
INPUT FREQUENCY (MHz)
0
90
85
80
75
70
65
95
SFDR (dBFS)
50
100 150 200 250 300 350
225814 G10
LTC2258-14: SFDR vs Input
Frequency, –1dB, 2V Range,
65Msps
LTC2258-14: I
OVDD
vs Sample
Rate, 5MHz Sine Wave Input,
–1dB, 5pF on Each Data Output
LTC2258-14: SNR vs SENSE,
f
IN
= 5MHz, –1dB
LTC2257-14: Integral Nonlinearity
(INL)
LTC2257-14: Differential
Nonlinearity (DNL)
LTC2257-14: 8k Point FFT,
f
IN
= 5MHz, –1dBFS, 40Msps
LTC2257-14: 8k Point FFT,
f
IN
= 29MHz, –1dBFS, 40Msps
SAMPLE RATE (Msps)
0
25
10
15
20
5
0
45
30
35
40
I
OVDD
(mA)
20 40 60
225814 G14
1.75mA LVDS
1.8V CMOS
1.2V CMOS
3.5mA LVDS
SENSE PIN (V)
0.6
72
69
70
71
68
67
73
74
75
SNR (dBFS)
0.7 0.8 0.9 1.1 1.2 1.31
225814 G15
OUTPUT CODE
0
–2.0
–0.5
–1.0
–1.5
INL ERROR (LSB)
0
0.5
1.0
1.5
2.0
4096
8192 12288 16384
225814 G21
OUTPUT CODE
0
–1.0
–0.4
–0.2
–0.6
–0.8
DNL ERROR (LSB)
0
0.4
0.2
0.6
0.8
1.0
4096
8192 12288 16384
225814 G22
FREQUENCY (MHz)
0
–100
–110
–120
–70
–60
–80
–90
AMPLITUDE (dBFS)
–50
–30
–40
–20
–10
0
10
20
225814 G23
FREQUENCY (MHz)
0
–100
–110
–120
–70
–60
–80
–90
AMPLITUDE (dBFS)
–50
–30
–40
–20
–10
0
10
20
225814 G24