LTC2238/LTC2237/LTC2236
10
223876fa
TYPICAL PERFOR A CE CHARACTERISTICS
UW
LTC2236: 8192 Point 2-Tone FFT,
fIN = 10.9MHz and 13.8MHz,
–1dB, 2V Range, 25Msps
LTC2236: Grounded Input
Histogram, 25Msps
LTC2236: SNR vs Input Frequency,
–1dB, 2V Range, 25Msps
LTC2236: SFDR vs Input
Frequency, –1dB, 2V Range,
25Msps
LTC2236: SNR and SFDR vs
Sample Rate, 2V Range,
fIN = 5MHz, –1dB
LTC2236: SNR vs Input Level,
fIN = 5MHz, 2V Range, 25Msps
LTC2236: IOVDD vs Sample Rate,
5MHz Sine Wave Input, –1dB,
OVDD = 1.8V
LTC2236: IVDD vs Sample Rate,
5MHz Sine Wave Input, –1dB
LTC2236: SFDR vs Input Level,
fIN = 5MHz, 2V Range, 25Msps
FREQUENCY (MHz)
0
AMPLITUDE
(dB)
–80
–20
–10
0
4
8
10
223876 G37
–100
–110
–40
–60
–90
–30
–120
–50
–70
2
6
12
CODE
70000
60000
50000
40000
30000
20000
10000
0
512
65520
513
223876 G38
511
0
COUNT
INPUT FREQUENCY (MHz)
0
SNR
(dBFS)
59.5
60.5
200
223876 G39
58.5
57.5
50
100
150
62.5
61.5
INPUT FREQUENCY (MHz)
0
85
90
100
150
223876 G40
80
75
50
100
200
70
65
95
SFDR
(dBFS)
SAMPLE RATE (Msps)
0
SNR
AND
SFDR
(dBFS)
80
90
100
40
223876 G41
70
60
50
510 15 20 25 30 35
45 50
SFDR
SNR
INPUT LEVEL (dBFS)
–60
SNR
(dBc
AND
dBFS)
30
40
50
–30
–10
223876 G42
20
10
0
–50
–40
dBFS
dBc
–20
60
70
80
0
INPUT LEVEL (dBFS)
–60
0
SFDR
(dBc
AND
dBFS)
20
40
60
80
120
–50
–40
–30
dBFS
dBc
–20
223876 G43
–10
0
100
10
30
50
70
110
90
80dBc SFDR
REFERENCE LINE
SAMPLE RATE (Msps)
0
15
I VDD
(mA)
20
25
30
35
510
15
20
223876 G44
25
30
35
2V RANGE
1V RANGE
SAMPLE RATE (Msps)
0
I OVDD
(mA)
1
2
3
510
15
20
223876 G45
25
30
35