AD9265 Datasheet, PDF (20/44 Pages) Analog Devices – 16-Bit, 125 MSPS/105 MSPS/80 MSPS 1.8 V Analog-to-Digital Converter

AD9265
0
125MSPS
70.1MHz @ –6dBFS
–20 SNR = 73.5dB (79.5dBFS)
SFDR = 98dBc
–40
–60
–80
–100
SECOND
HARMONIC
THIRD
HARMONIC
–120
–140
0
10
20
30
40
50
60
FREQUENCY (MHz)
Figure 36. AD9265-125 Single-Tone FFT with fIN = 70.1 MHz @ −6 dBFS with
Dither Enabled
0
125MSPS
70.1MHz @ –23dBFS
–15
SNR = 57.3dBc (80.3dBFS)
SFDR = 75.1dBc
–30
–45
–60
–75
–90
2
–105
+
5
–120
4
–135
3
6
6 12 18 24 30 36 42 48 54 60
FREQUENCY (MHz)
Figure 37. AD9265-125 Single-Tone FFT with fIN = 70.1 MHz @ −23 dBFS with
Dither Disabled, 1M Sample
0
125MSPS
70.1MHz @ –23dBFS
–15
SNR = 56.8dBc (79.8dBFS)
SFDR = 86.8dBc
–30
–45
–60
–75
–90
–105 ₊
–120
2
4
5
–135
3
6
6 12 18 24 30 36 42 48 54 60
FREQUENCY (MHz)
Figure 38. AD9265-125 Single-Tone FFT with fIN = 70.1 MHz @ −23 dBFS with
Dither Enabled, 1M Sample
120
SFDR (dBFS)
100
SNR (dBFS)
80
60
SFDR (dBc)
40
SNR (dBc)
20
0
–100 –90 –80 –70 –60 –50 –40 –30 –20 –10 0
INPUT AMPLITUDE (dBFS)
Figure 39. AD9265-125 Single-Tone SNR/SFDR vs. Input Amplitude (AIN) with
fIN = 2.4 MHz
120
SFDR (dBFS)
100
SNR (dBFS)
80
60
SFDR (dBc)
40
SNR (dBc)
20
0
–100 –90 –80 –70 –60 –50 –40 –30 –20 –10 0
INPUT AMPLITUDE (dBFS)
Figure 40. AD9265-125 Single-Tone SNR/SFDR vs. Input Amplitude (AIN) with
fIN = 98.12 MHz
120
SFDRFS (DITHER ON)
110
100
SFDRFS (DITHER OFF)
90
SNRFS (DITHER OFF)
80
SNRFS (DITHER ON)
70
–100 –90 –80 –70 –60 –50 –40 –30 –20 –10 0
INPUT AMPLITUDE (dBFS)
Figure 41. AD9265-125 Single-Tone SNR/SFDR vs. Input Amplitude (AIN) with
fIN = 30 MHz With and Without Dither Enabled
Rev. A | Page 20 of 44