ltc1748cfw-trpbf Linear Technology Corporation, ltc1748cfw-trpbf Datasheet - Page 8

• Manufacturer Part Number: ltc1748cfw-trpbf
• Description: 14-bit, 80msps Low Noise Adc
• Manufacturer: Linear Technology Corporation

LTC1748
8
TYPICAL PERFOR A CE CHARACTERISTICS
77.5
77.0
76.0
75.5
75.0
74.0
78.0
76.5
74.5
100
80
70
60
95
90
85
75
65
78
77
76
75
74
73
72
0
0
0
SFDR vs Input Frequency and
Amplitude, 3.2V Range,
2nd and 3rd Harmonic
SNR vs Sample Rate, 5MHz Input,
–1dB, 3.2V Range
SNR vs Input Frequency
3.2V Range
T
T
T
A
A
A
= 25 C
= 25 C
= 25 C
20
20
20
INPUT FREQUENCY (MHz)
INPUT FREQUENCY (MHz)
SAMPLE RATE (Msps)
40
40
40
60
60
60
–6dB
–20dB
–1dB
W
–10dB
80
80
80
1748 G25
1748 G31
1748 G28
U
100
100
100
76.4
76.8
76.6
76.2
76.0
75.8
75.6
75.4
75.2
77.0
100
100
95
90
85
80
75
70
60
95
90
85
80
75
70
65
60
65
–80
0
0
SFDR vs Input Frequency and
Amplitude, 2V Range,
2nd and 3rd Harmonic
SNR vs Input Level and Frequency
3.2V Range
High Input Frequency SFDR,
–1dB, 2V Range
T
T
A
A
= 25 C
= 25 C
2ND OR 3RD HARMONIC
20
50
15MHz
30MHz
50MHz
70MHz
–60
4TH OR HIGHER HARMONIC
INPUT FREQUENCY (MHz)
INPUT FREQUENCY (MHz)
INPUT LEVEL
100
40
–40
150
60
–20dB
–20
–6dB
–1dB
200
80
–10dB
1748 G29
1748 G26
1748 G33
100
250
0
10000
18000
16000
14000
12000
8000
4000
6000
2000
73.0
72.5
72.0
71.5
71.0
70.5
69.5
70.0
69.0
68.5
100
80
95
90
85
75
70
65
60
0
0
0
High Input Frequency SNR,
–1dB, 2V Range
SFDR vs Sample Rate, 5MHz Input,
–1dB, 3.2V Range
Shorted Input Histogram
T
8147
A
= 25 C
8148
20
50
INPUT FREQUENCY (MHz)
SAMPLE RATE (Msps)
8149
100
40
CODE
8150
60
150
8151
8152 8153
T
200
80
A
= 25 C
1748 G34
1748 G27
1748 G30
1748fa
100
250