LTC1740 查看數據表（PDF） - Linear Technology
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LTC1740 Datasheet PDF : 16 Pages
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LTC1740
TYPICAL PERFOR A CE CHARACTERISTICS
Spurious-Free Dynamic Range
vs Input Amplitude
100
dBFS
90
80
70
60
50
0
–50
dBc
DUAL SUPPLIES
5V INPUT RANGE
DIFFERENTIAL INPUT
6Msps
–40 –30 –20 –10
0
INPUT AMPLITUDE (dBFS)
1740 G07
S/(N + D) and SFDR
vs Sample Frequency
95
SFDR
90
85
80
S/(N + D)
75
70
65
60 SINGLE SUPPLY
5V INPUT RANGE
55 DIFFERENTIAL INPUT
6Msps
50
012345678
SAMPLE FREQUENCY (MHz)
1740 G10
Spurious-Free Dynamic Range
vs Input Amplitude
100
dBFS
90
80
70
60
50
0
–50
dBc
SINGLE SUPPLY
5V INPUT RANGE
DIFFERENTIAL INPUT
6Msps
–40 –30 –20 –10
0
INPUT AMPLITUDE (dBFS)
1740 G08
Nonaveraged 4096 Point FFT
0
DUAL SUPPLIES
–20
6Msps
fIN = 2.5MHz, 5VP-P
DIFFERENTIAL INPUT
–40
–60
–80
–100
–120
–140
0
0.5 1 1.5 2 2.5 3
FREQUENCY (MHz)
1740 G11
S/(N + D) and SFDR
vs Sample Frequency
95
SFDR
90
85
80
S/(N + D)
75
70
65
60 DUAL SUPPLIES
5V INPUT RANGE
55 DIFFERENTIAL INPUT
6Msps
50
012345678
SAMPLE FREQUENCY (MHz)
1740 G09
Nonaveraged 4096 Point FFT
0
SINGLE SUPPLY
–20
6Msps
fIN = 2.5MHz, 5VP-P
DIFFERENTIAL INPUT
–40
–60
–80
–100
–120
–140
0
0.5 1 1.5 2 2.5 3
FREQUENCY (MHz)
1740 G12
6
IDD vs Clock Frequency
49
47
45
VREF = 4.5V
43
41
VREF = 2.25V
39
37
35
0
1
2
3
4
5
6
CLOCK FREQUENCY (MHz)
1740 G13
ISS vs Clock Frequency
2.5
2.0
1.5
1.0
0.5
0
0
1
2
3
4
5
6
CLOCK FREQUENCY (MHz)
1740 G14
1740f
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