AD9642 Datasheet, PDF (14/28 Pages) Analog Devices – 14-Bit, 170 MSPS/210 MSPS/250 MSPS, 1.8 V Analog-to-Digital Converter (ADC)

AD9642
0
250MSPS
–20
90.1MHz @ –1dBFS
SNR = 71dB (72dBFS)
SFDR = 89dBc
–40
THIRD HARMONIC
–60
SECOND HARMONIC
–80
–100
–120
–140
0
25
50
75
100
125
FREQUENCY (MHz)
Figure 28. AD9642-250 Single-Tone FFT with fIN = 90.1 MHz
0
250MSPS
185.1MHz @ –1dBFS
–20 _{SNR = 70.4dB (71.4dBFS)}
SFDR = 86dBc
–40
THIRD HARMONIC
–60
–80
SECOND HARMONIC
–100
–120
–140
0
25
50
75
100
125
FREQUENCY (MHz)
Figure 29. AD9642-250 Single-Tone FFT with fIN = 185.1 MHz
0
250MSPS
220.1MHz @ 1.0dBFS
–20
SNR = 69.9dB (70.9dBFS)
SFDR = 91dBc
–40
–60
THIRD HARMONIC
–80
SECOND HARMONIC
–100
–120
–140
0
25
50
75
100
125
FREQUENCY (MHz)
Figure 30. AD9642-250 Single-Tone FFT with fIN = 220.1 MHz
0
250MSPS
–20
305.1MHz @ –1dBFS
SNR = 68.5dB (69.5dBFS)
SFDR = 82dBc
–40
–60
SECOND HARMONIC
THIRD HARMONIC
–80
–100
–120
–140
0
25
50
75
100
125
FREQUENCY (MHz)
Figure 31. AD9642-250 Single-Tone FFT with fIN = 305.1 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 32. AD9642-250 Single-Tone SNR/SFDR vs. Input Amplitude (AIN)
with fIN = 90.1 MHz, fS = 250 MSPS
100
95
SFDR (dBFS)
90
85
80
75
70
SNR (dBc)
65
60
FREQUENCY (MHz)
Figure 33. AD9642-250 Single-Tone SNR/SFDR vs. Input Frequency (fIN),
fS = 250 MSPS
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