Datasheet

LTC2248/LTC2247/LTC2246
10
224876fa
CODE
8179 8180 8181 8182 8183 8184 8185 8186
3227
278
18803
22016
853
6919
43
COUNT
2246 G08
25000
20000
15000
10000
5000
0
INPUT FREQUENCY (MHz)
0
SNR (dBFS)
200
2246 G09
50
100
150
75
74
73
72
71
70
13373
FREQUENCY (MHz)
0
AMPLITUDE (dB)
2246 G07
246810
12
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
SAMPLE RATE (Msps)
I
VDD
(mA)
2246 G14
35
30
25
20
15
0
10
20
515
25
30
35
0
10
20
515
25
30
35
2V RANGE
1V RANGE
INPUT LEVEL (dBFS)
SNR (dBc AND dBFS)
2246 G12
80
70
60
50
40
30
20
10
0
–60
–40
–50
–20
–30
–10
0
SAMPLE RATE (Msps)
0
SNR AND SFDR (dBFS)
110
100
90
80
70
60
2246 G11
10
20 30 40
50
SNR
INPUT FREQUENCY (MHz)
0
100
95
90
85
80
75
70
65
150
2246 G10
50 100 200
SFDR (dBFS)
INPUT LEVEL (dBFS)
–60 – 50 –40 –20–30
–10
0
2246 G13
SFDR (dBc AND dBFS)
120
110
100
90
80
70
60
50
40
30
20
dBFS
dBc
90dBc SFDR
REFERENCE LINE
SAMPLE RATE (Msps)
I
OVDD
(mA)
2246 G15
3
2
1
0
dBFS
dBc
SFDR
TYPICAL PERFOR A CE CHARACTERISTICS
UW
LTC2246: 8192 Point 2-Tone FFT,
f
IN
= 10.9MHz and 13.8MHz,
–1dB, 2V Range, 25Msps
LTC2246: Grounded Input
Histogram, 25Msps
LTC2246: SNR vs Input Frequency,
–1dB, 2V Range, 25Msps
LTC2246: SFDR vs Input
Frequency, –1dB, 2V Range,
25Msps
LTC2246: SNR and SFDR vs
Sample Rate, 2V Range,
f
IN
= 5MHz, –1dB
LTC2246: SNR vs Input Level,
f
IN
= 5MHz, 2V Range, 25Msps
LTC2246: I
OVDD
vs Sample Rate,
5MHz Sine Wave Input, –1dB,
O
VDD
= 1.8V
LTC2246: I
VDD
vs Sample Rate,
5MHz Sine Wave Input, –1dB
LTC2246: SFDR vs Input Level,
f
IN
= 5MHz, 2V Range, 25Msps