11
226114fc
LTC2261-14
LTC2260-14/LTC2259-14
LTC2261-14: IOVDD vs Sample
Rate, 5MHz Sine Wave Input,
–1dB, 5pF on Each Data Output
LTC2261-14: SNR vs SENSE,
fIN = 5MHz, –1dB
LTC2260-14: Integral Non-Linearity
(INL)
LTC2260-14: Differential
Non-Linearity (DNL)
LTC2260-14: 8k Point FFT, fIN = 5MHz
–1dBFS, 105Msps
LTC2260-14: 8k Point FFT, fIN = 30MHz
–1dBFS, 105Msps
Typical perForMance characTerisTics
SAMPLE RATE (Msps)
0
25
10
15
20
5
0
45
30
35
40
I OVDD
(mA)
25
50
75
100
125
226114 G14
1.75mA LVDS
1.8V CMOS
1.2V CMOS
3.5mA LVDS
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
1.3
1
226114 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
226114 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
226114 G22
FREQUENCY (MHz)
0
–100
–110
–120
–70
–60
–80
–90
AMPLITUDE
(dBFS) –50
–30
–40
–20
–10
0
10
20
30
40
50
226114 G23
FREQUENCY (MHz)
0
–100
–110
–120
–70
–60
–80
–90
AMPLITUDE
(dBFS) –50
–30
–40
–20
–10
0
10
20
30
40
50
226114 G24
FREQUENCY (MHz)
0
–80
–90
–100
–110
–120
–130
–50
–60
–70
AMPLITUDE
(dBFS)
–40
–30
–20
–10
0
10
20
30
40
50
60
226114 G16
FREQUENCY (MHz)
0
–130
–80
–90
–100
–110
–120
–50
–60
–70
AMPLITUDE
(dBFS)
–40
–30
–20
–10
0
10
20
30
40
50
60
226114 G17
SAMPLE RATE (Msps)
CMOS
LVDS
0
66
72
70
68
SNR
(dBFS)
74
25
50
75
125
100
226114 G18
DDR CMOS
LTC2261-14: 128k Point Averaged FFT,
fIN = 70MHz, –65dBFS, 125Msps,
RAND OFF, ABP OFF
LTC2261-14: SNR vs Sample Rate
and Digital Output Mode, 30MHz Sine
Wave Input, –1dB
LTC2261-14: 128k Point Averaged FFT,
fIN = 70MHz, –65dBFS, 125Msps,
RAND ON, ABP ON