Datasheet

AD9231
Rev. A | Page 13 of 36
AVDD = 1.8 V; DRVDD = 1.8 V, maximum sample rate, 2 V p-p differential input, 1.0 V internal reference; AIN = −1.0 dBFS, DCS
disabled, unless otherwise noted.
–120
–70 –60 –50 –40
INPUT AMPLITUDE (dBFS)
–30 –20 –10
–100
–80
–60
–40
–20
0
SFDR/IMD3 (dBc/dBFS)
SFDR (dBc)
SFDR (dBFS)
IMD3 (dBc)
IMD3 (dBFS)
08121-060
Figure 12. Two-Tone SFDR/IMD3 vs. Input Amplitude (AIN) with
f
IN1
= 28.3 MHz and f
IN2
= 30.6 MHz
0
10
20
30
40
50
60
70
80
90
100
0 50 100 150 200
SNR/SFDR (dBFS/dBc)
INPUT FREQUENCY (MHz)
SNR
SFDR
08121-061
Figure 13. AD9231-80 SNR/SFDR vs. Input Frequency (AIN) with
2 V p-p Full Scale
0.3
0.2
0.1
0
–0.1
–0.2
–0.3
0 500 1000 1500 2000 2500 3000 3500 4000
OUTPUT CODE
DNL ERROR (LSB)
08121-063
Figure 14. AD9231-80 DNL Error with f
IN
= 9.7 MHz
0
10
20
30
40
50
60
70
80
90
100
10 20 30 40 50 60 70 80
SNRFS/SFDR (dBFS/dBc)
SAMPLE RATE (MHz)
SNRFS
SFDR
08121-062
Figure 15. AD9231-80 SNR/SFDR vs. Sample Rate with AIN = 9.7 MHz
0
10
20
30
40
50
60
70
80
90
100
–70 –60 –50 –40 –30 –20 –10 0
SNR/SFDR (dBc AND dBFS)
INPUT AMPLITUDE (dBc)
SNR
SNRFS
SFDR
SFDRFS
08121-064
Figure 16. AD9231-80 SNR/SFDR vs. Input Amplitude (AIN) with f
IN
= 9.7 MHz
–0.2
0.4
0.2
0
0.4
0 500 1000 1500 2000 2500 3000 3500 4000
OUTPUT CODE
INL ERROR (LSB)
08121-066
Figure 17. AD9231-80 INL with f
IN
= 9.7 MHz