AD9444 Analog Devices, AD9444 Datasheet - Page 18

• 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

AD9444
–100
–110
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–130
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100
–10
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–50
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–90
95
90
85
80
75
70
–10
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0
20
Figure 30. 64K FFT, 61.44 MSPS, 4 @ WCDMA, IF = 46.08 MHz
0
0
SNR - DCS ON (dB)
0
SFDR - DCS ON (dBFS)
Figure 32. Single-Tone SNR/SFDR vs. Clock Duty Cycle,
5
SNR - DCS OFF (dB)
30
F
Figure 31. NPR, 80 MSPS/18 MHz Notch
SAMPLE
SFDR - DCS OFF (dBFS)
7.68
10
= 80 MSPS, 10.3 MHz @ −0.5 dBFS
40
CLOCK DUTY CYCLE (%)
FREQUENCY (MHz)
FREQUENCY (MHz)
15
15.36
50
20
25
61.44MSPS
TOTAL INPUT SIGNAL
POWER: –30dBFS
60
23.04
30
NPR: 63.1dB
70
35
30.72
80
40
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10000
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8000
6000
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250
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95
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Figure 34. I
2.5
0
20
8179
30
V
2.7
IN
DRVDD (3.3V)
Common-Mode Voltage 80 MSPS/10.3 MHz
8180
SFDR (dBc)
SUPPLY
40
80 MSPS, VIN+ = VIN−, 32K Samples
Figure 35. Single-Tone SNR/SFDR vs.
Figure 33. Ground Input Histogram
2.9
vs. Sample Rate, A
8181
50
AVDD1 (3.3V)
V
SAMPLE RATE (MSPS)
IN
60
COMMON-MODE (V)
8182
3.1
SNR (dB)
70
8183
B
3.3
IN
80
IN
8184
= 10.3 MHz @ −0.5 dBFS
AVDD2 (5.0V)
90
3.5
8185
100
3.7
110
8186
120
3.9
8187
130