Datasheet

LTC2261-12
LTC2260-12/LTC2259-12
10
226112fc
For more information www.linear.com/LTC2261-12
Typical perForMance characTerisTics
LTC2261-12: 8k Point FFT, f
IN
= 30MHz
–1dBFS, 125Msps
LTC2261-12: 8k Point FFT, f
IN
= 70MHz
–1dBFS, 125Msps
LTC2261-12: 8k Point FFT, f
IN
= 140MHz
–1dBFS, 125Msps
LTC2261-12: 8k Point 2-Tone FFT,
f
IN
= 70MHz, 75MHz, –1dBFS,
125Msps
LTC2261-12: Shorted Input
Histogram
LTC2261-12: SFDR vs Input Level,
f
IN
= 70MHz, 2V Range, 125Msps
LTC2261-12: I
VDD
vs Sample Rate,
5MHz Sine Wave Input, –1dB
FREQUENCY (MHz)
0
–100
–110
–120
–70
–60
–80
–90
AMPLITUDE (dBFS)
–50
–30
–40
–20
–10
0
226112 G04
10
20 30 40 50 60
FREQUENCY (MHz)
0
–100
–110
–120
–70
–60
–80
–90
AMPLITUDE (dBFS)
–50
–30
–40
–20
–10
0
10
20 30 40 50 60
226112 G05
FREQUENCY (MHz)
0
–100
–110
–120
–70
–60
–80
–90
AMPLITUDE (dBFS)
–50
–30
–40
–20
–10
0
10
20 30 40 50 60
226112 G06
FREQUENCY (MHz)
0
–100
–110
–120
–70
–60
–80
–90
AMPLITUDE (dBFS)
–50
–30
–40
–20
–10
0
10
20 30 40 50 60
226112 G07
OUTPUT CODE
2041
2000
0
10000
8000
6000
4000
COUNT
12000
16000
14000
18000
2043 2045
226112 G08
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 G12
dBFS
dBc
SAMPLE RATE (Msps)
0
75
60
65
70
55
50
80
I
VDD
(mA)
25 50 75 100 125
226112 G13
LVDS OUTPUTS
CMOS OUTPUTS
INPUT FREQUENCY (MHz)
0
72
71
70
69
68
67
66
SNR (dBFS)
50
100 150 200 250 300 350
226112 G09
INPUT FREQUENCY (MHz)
0
90
85
80
75
70
65
95
SFDR (dBFS)
50
100 150 200 250 300 350
226112 G10
LTC2261-12: SFDR vs Input
Frequency, –1dB, 2V Range,
125Msps
LTC2261-12: SNR vs Input
Frequency, –1dB, 2V Range,
125Msps