LTC2247_15 Datasheet, PDF (10/24 Pages) Linear Technology – 14-Bit, 65/40/25Msps Low Power 3V ADCs

LTC2248/LTC2247/LTC2246
TYPICAL PERFOR A CE CHARACTERISTICS
LTC2246: 8192 Point 2-Tone FFT,
f_IN = 10.9MHz and 13.8MHz,
–1dB, 2V Range, 25Msps
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
0 2 4 6 8 10 12
FREQUENCY (MHz)
2246 G07
LTC2246: SFDR vs Input
Frequency, –1dB, 2V Range,
25Msps
100
95
90
85
80
75
70
65
0
50
100
150
200
INPUT FREQUENCY (MHz)
2246 G10
LTC2246: Grounded Input
Histogram, 25Msps
25000
22016
20000
18803
15000
13373
10000
6919
5000
3227
43 ⁸⁵³
278
0
8179 8180 8181 8182 8183 8184 8185 8186
CODE
2246 G08
LTC2246: SNR and SFDR vs
Sample Rate, 2V Range,
f_IN = 5MHz, –1dB
110
100
SFDR
90
80
SNR
70
60
0
10
20
30
40
50
SAMPLE RATE (Msps)
2246 G11
LTC2246: SFDR vs Input Level,
f_IN = 5MHz, 2V Range, 25Msps
120
110
dBFS
100
90
80
dBc
70
60
90dBc SFDR
REFERENCE LINE
50
40
30
20
–60
–50 –40 –30 –20
INPUT LEVEL (dBFS)
–10 0
2246 G13
LTC2246: I_VDD vs Sample Rate,
5MHz Sine Wave Input, –1dB
35
30
2V RANGE
25
1V RANGE
20
15
0 5 10 15 20 25 30 35
SAMPLE RATE (Msps)
2246 G14
10
LTC2246: SNR vs Input Frequency,
–1dB, 2V Range, 25Msps
75
74
73
72
71
70
0
50
100
150
200
INPUT FREQUENCY (MHz) _{2246 G09}
LTC2246: SNR vs Input Level,
f_IN = 5MHz, 2V Range, 25Msps
80
70
dBFS
60
50
dBc
40
30
20
10
0
–60 –50 –40 –30 –20 –10 0
INPUT LEVEL (dBFS)
2246 G12
LTC2246: I_OVDD vs Sample Rate,
5MHz Sine Wave Input, –1dB,
O_VDD = 1.8V
3
2
1
0
0 5 10 15 20 25 30 35
SAMPLE RATE (Msps)
2246 G15
224876fa