LTC1748 Linear Technology, LTC1748 Datasheet - Page 7

• Manufacturer Part Number: LTC1748
• Description: 14-Bit 80Msps Low Noise ADC
• Manufacturer: Linear Technology

TYPICAL PERFOR A CE CHARACTERISTICS
–120
–100
–110
–120
–100
–110
–20
–30
–40
–50
–60
–70
–80
–90
–30
–40
–50
100
–10
–10
–20
–60
–70
–80
–90
120
110
90
80
70
50
40
30
60
20
10
0
0
0
–80
0
0
8192 Point FFT,
Input Frequency = 69.1MHz,
–10dB, 3.2V Range
8192 Point 2-Tone FFT,
Input Frequency = 25MHz and
30MHz, –7dB, 3.2V Range
SFDR vs 30MHz Input Level
T
T
A
A
= 25 C
= 25 C
–70
5
5
–60
10
10
INPUT LEVEL (dBFS)
FREQUENCY (MHz)
FREQUENCY (MHz)
–50
15
15
dBc
–40
20
20
dBFS
–30
25
25
–20
30
30
W
T
A
–10
= 25 C
35
35
1748 G16
1748 G22
1748 G19
U
40
40
0
–120
–120
–100
–110
–100
–110
–30
–40
–50
–30
–40
–50
–10
–20
–60
–70
–80
–90
–10
–20
–60
–70
–80
–90
110
100
120
90
80
70
50
60
40
30
20
10
0
0
0
–80
0
0
8192 Point 2-Tone FFT,
Input Frequency = 65MHz and
70MHz, –7dB, 3.2V Range
SFDR vs 50.3MHz Input Level
8192 Point FFT,
Input Frequency = 69.1MHz,
–20dB, 3.2V Range
T
T
T
A
A
A
= 25 C
= 25 C
= 25 C
–70
5
5
–60
10
10
INPUT LEVEL (dBFS)
FREQUENCY (MHz)
FREQUENCY (MHz)
dBFS
–50
15
15
dBc
–40
20
20
–30
25
25
–20
30
30
–10
35
35
1748 G17
1748 G20
1748 G23
40
40
0
–100
–110
–120
–20
–30
–40
–50
–70
–80
–90
100
110
100
–10
–60
120
110
120
90
80
70
50
90
80
70
60
50
40
30
20
10
60
40
30
20
10
0
0
0
–80
–80
0
8192 Point 2-Tone FFT,
Input Frequency = 5MHz and
7MHz, –7dB, 3.2V Range
SFDR vs 15MHz Input Level
SFDR vs 70.3MHz Input Level
T
A
–70
= 25 C
–70
5
–60
–60
10
www.DataSheet4U.com
INPUT LEVEL (dBFS)
INPUT LEVEL (dBFS)
FREQUENCY (MHz)
dBFS
dBc
–50
–50
15
dBc
–40
–40
20
dBFS
LTC1748
–30
–30
25
–20
–20
30
T
T
A
A
–10
–10
= 25 C
= 25 C
35
1748 G24
1748 G18
1748 G21
1748fa
7
40
0
0