Datasheet

8
LTC1744
1744f
TYPICAL PERFOR A CE CHARACTERISTICS
UW
(Note 5)
SAMPLE RATE (Msps)
0
POWER (mW)
1050
1075
1100
30
50
1744 G35
1025
1000
975
10 20 40
1125
1150
1175
T
A
= 25°C
Power Dissipation vs Sample Rate
SFDR vs Input Frequency and
Amplitude, 2V Range
SFDR vs Input Frequency and
Amplitude, 3.2V Range
INPUT FREQUENCY (MHz)
1
SFDR (dBFS)
120
110
100
90
80
70
60
10 100
1744 G32
–1dBFS
–6dBFS
–20dBFS
T
A
= 25°C
INPUT FREQUENCY (MHz)
1
SFDR (dBFS)
120
110
100
90
80
70
60
10 100
1744 G33
–1dBFS
–6dBFS
–20dBFS
T
A
= 25°C
INPUT FREQUENCY (MHz)
1
AMPLITUDE (dBc)
–60
–70
–80
–90
–100
–110
–120
10 100
1744 G29
T
A
= 25°C
Worst Harmonic 4th or Higher vs
Input Frequency, 3.2V Range, –1dB
INPUT FREQUENCY (MHz)
1
AMPLITUDE (dBc)
–60
–70
–80
–90
–100
–110
10 100
1744 G28
3rd HARMONIC
2nd HARMONIC
T
A
= 25°C
2nd and 3rd Harmonic vs Input
Frequency, 3.2V Range, –1dB
2nd and 3rd Harmonic vs Input
Frequency, 2V Range, –1dB
Worst Harmonic 4th or Higher vs
Input Frequency, 2V Range, –1dB
INPUT FREQUENCY (MHz)
1
AMPLITUDE (dBc)
–60
–70
–80
–90
–100
–110
10 100
1744 G26
3rd HARMONIC
2nd HARMONIC
T
A
= 25°C
INPUT FREQUENCY (MHz)
1
AMPLITUDE (dBc)
–60
–70
–80
–90
–100
–110
10 100
1744 G27
T
A
= 25°C
INPUT AMPLITUDE (dBFS)
SFDR (dBc AND dBFS)
110
100
90
80
70
60
50
40
1744 G34
–60 –40 –20 0
SFDR dBFS
SFDR dBc
T
A
= 25°C
SFDR vs Input Amplitude, 2V
Range, 5MHz Input Frequency