Datasheet

LTC2261-12
LTC2260-12/LTC2259-12
12
226112fc
For more information www.linear.com/LTC2261-12
LTC2260-12: I
VDD
vs Sample Rate,
5MHz Sine Wave Input, –1dB
LTC2260-12: I
OVDD
vs Sample
Rate, 5MHz Sine Wave Input,
–1dB, 5pF on Each Data Output
LTC2260-12: SNR vs SENSE,
f
IN
= 5MHz, –1dB
LTC2260-12: Shorted Input
Histogram
LTC2260-12: SFDR vs Input Level,
f
IN
= 70MHz, 2V Range, 105Msps
Typical perForMance characTerisTics
LTC2259-12: Integral Nonlinearity
(INL)
OUTPUT CODE
2044
2000
0
6000
4000
COUNT
8000
16000
14000
12000
10000
18000
2045 2048
226112 G28
SAMPLE RATE (Msps)
0
60
45
50
55
40
65
I
VDD
(mA)
25 50 75 100
226112 G33
LVDS OUTPUTS
CMOS OUTPUTS
SAMPLE RATE (Msps)
25
10
15
20
5
0
45
30
35
40
I
OVDD
(mA)
226112 G34
1.75mA LVDS
1.8V CMOS
1.2V CMOS
3.5mA LVDS
0 25 50 75 100
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
226112 G32
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 1.31
226112 G35
OUTPUT CODE
0
–1.0
–0.4
–0.6
–0.8
INL ERROR (LSB)
–0.2
0
0.4
0.6
0.2
0.8
1.0
1024
2048 3072 4096
226112 G41
INPUT FREQUENCY (MHz)
0
72
71
70
69
68
67
66
SNR (dBFS)
50
100 150 200 250 300 350
226112 G29
INPUT FREQUENCY (MHz)
0
90
85
80
75
70
65
95
SFDR (dBFS)
50
100 150 200 250 300 350
226112 G30
LTC2260-12: SNR vs Input
Frequency, –1dB, 2V Range,
105Msps
LTC2260-12: SFDR vs Input
Frequency, –1dB, 2V Range,
105Msps
LTC2260-12: 8k Point 2-Tone FFT,
f
IN
= 70MHz, 75MHz, –1dBFS,
105Msps
FREQUENCY (MHz)
0
–100
–110
–120
–70
–60
–80
–90
AMPLITUDE (dBFS)
–50
–30
–40
–20
–10
0
10
20 30 40 50
226112 G27