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AD9642 View Datasheet(PDF) - Analog Devices

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AD9642 Datasheet PDF : 28 Pages
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AD9642
Data Sheet
TYPICAL PERFORMANCE CHARACTERISTICS
AVDD = 1.8 V, DRVDD = 1.8 V, sample rate = maximum rate per speed grade, DCS enabled, 1.75 V p-p differential input, VIN = −1.0 dBFS,
32k sample, TA = 25°C, unless otherwise noted.
0
170MSPS
90.1MHz @ –1dBFS
–20 SNR = 71.82dB (72.2dBFS)
SFDR = 93dBc
–40
0
170MSPS
305.1MHz @ –1dBFS
–20
SNR = 68.0dB (69.0dBFS)
SFDR = 86dBc
–40
–60
SECOND HARMONIC
–80
–100
THIRD HARMONIC
–60
–80
–100
SECOND HARMONIC
THIRD HARMONIC
–120
–120
–140
0
10 20 30 40 50 60
FREQUENCY (MHz)
70 80
Figure 4. AD9642-170 Single-Tone FFT with fIN = 90.1 MHz
–140
0
10
20
30
40
50
60
70
80
FREQUENCY (MHz)
Figure 7. AD9642-170 Single-Tone FFT with fIN = 305.1 MHz
0
170MSPS
185.1MHz @ –1dBFS
–20
SNR = 70.2dB (71.2dBFS)
SFDR = 86dBc
–40
–60
–80
–100
THIRD HARMONIC
SECOND HARMONIC
–120
–140
0
10
20
30
40
50
60
70
80
FREQUENCY (MHz)
Figure 5. AD9642-170 Single-Tone FFT with fIN = 185.1 MHz
120
SFDR (dBFS)
100
80
SNR (dBFS)
60
SFDR (dBc)
40
SNR (dBc)
20
0
–100 –90 –80 –70 –60 –50 –40 –30 –20 –10 0
INPUT AMPLITUDE (dBFS)
Figure 8. AD9642-170 Single-Tone SNR/SFDR vs. Input Amplitude (AIN)
with fIN = 90.1 MHz, fS = 170 MSPS
0
170MSPS
220.1MHz @ –1dBFS
–20 SNR = 69.7dB (70.7dBFS)
SFDR = 84dBc
–40
–60
–80
–100
THIRD HARMONIC
SECOND HARMONIC
–120
–140
0
10 20
30 40 50 60
FREQUENCY (MHz)
70 80
Figure 6. AD9642-170 Single-Tone FFT with fIN = 220.1 MHz
100
95
SFDR (dBc)
90
85
80
SNR (dBFS)
75
70
65
60
60 90 120 150 180 210 240 270 300 330
75 105 135 165 195 225 255 285 315 345
FREQUENCY (MHz)
Figure 9. AD9642-170 Single-Tone SNR/SFDR vs. Input Frequency (fIN),
fS = 170 MSPS
Rev. B | Page 10 of 28
 

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