AD9444 Analog Devices, AD9444 Datasheet - Page 17

• Manufacturer Part Number: AD9444
• Description: 14-Bit, 80 MSPS A/D Converter
• Manufacturer: Analog Devices

Specifications of AD9444

• Resolution (bits): 14bit
• # Chan: 1
• Sample Rate: 80MSPS
• Interface: Par
• Analog Input Type: Diff-Uni
• Ain Range: (2Vref) p-p,1 V p-p,2 V p-p
• Adc Architecture: Pipelined
• Pkg Type: QFP

–100
–120
–100
–110
–120
100
–20
–40
–60
–80
–10
–20
–30
–40
–50
–60
–70
–80
–90
95
90
85
80
75
70
Figure 25. 32K Point Two-Tone FFT 80 MSPS/69.3 MHz/70.3 MHz
Figure 24. 32K Point Two-Tone FFT 80 MSPS/9.8 MHz/10.8 MHz
0
0
Figure 26. SFDR vs. Sample Rate, V
20
0
0
30
5
5
40
10
10
SAMPLE RATE (MSPS)
50
FREQUENCY (MHz)
FREQUENCY (MHz)
15
15
60
20
20
70
IN
= 10.3 MHz @ −0.5 dBFS
25
25
80
SFDR: –100dBFS
SFDR: 102dBFS
30
30
90
100
35
35
110
40
40
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Figure 28. Two-Tone SFDR vs. Analog Input Level, A
Figure 27. Two-Tone SFDR vs. Analog Input Level, A
–100
–110
–120
–100
–110
–120
–10
–20
–30
–40
–50
–60
–70
–80
–90
–10
–20
–30
–40
–50
–60
–70
–80
–90
100
95
90
85
80
75
70
0
0
–110 –100 –90 –80 –70 –60 –50 –40 –30 –20 –10
–110 –100 –90 –80 –70 –60 –50 –40 –30 –20 –10
Figure 29. SFDR vs. Sample Rate, V
10
SFDR (dBc)
SFDR (dBc)
WORST THIRD-ORDER IMD (dBc)
20
WORST THIRD-ORDER IMD (dBc)
30
ANALOG INPUT LEVEL (dBFS)
ANALOG INPUT LEVEL (dBFS)
40
90dBFS REFERENCE LINE
SAMPLE RATE (MSPS)
WORST THIRD-ORDER IMD (dBFS)
90dBFS REFERENCE LINE
50
WORST THIRD-ORDER IMD (dBFS)
SFDR (dBFS)
SFDR (dBFS)
60
IN
70
= 70.3 MHz @ −0.5 dBFS
80
IN
IN
= 69.3 MHz/70.3 MHz
= 9.8 MHz/10.8 MHz
90
100
AD9444
110
0
0