Datasheet

AD9231
Rev. A | Page 12 of 36
TYPICAL PERFORMANCE CHARACTERISTICS
AD9231-80
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.
0
–15
–30
–45
–60
–75
–90
–105
–120
–135
40 8 12 16 20 24 28 32 36 40
FREQUENCY (MHz)
AMPLITUDE (dBFS)
08121-054
4
3
6
+
2
5
80MSPS
9.7MHz @ –1dBFS
SNR = 70.2dB (71.2dBFS)
SFDR = 93.6dBc
Figure 6. AD9231-80 Single-Tone FFT with f
IN
= 9.7 MHz
0
–15
–30
–45
–60
–75
–90
–105
–120
–135
40 8 12 16 20 24 28 32 36 40
FREQUENCY (MHz)
AMPLITUDE (dBFS)
08121-055
4
3
5
+
2
6
80MSPS
30.6MHz @ –1dBFS
SNR = 70.1dB (71.1dBFS)
SFDR = 94.4dBc
Figure 7. AD9231-80 Single-Tone FFT with f
IN
= 30.6 MHz
0
–15
–30
–45
–60
–75
–90
–105
–120
–135
40 8 12 16 20 24 28 32 36 40
FREQUENCY (MHz)
AMPLITUDE (dBFS)
08121-056
4
3
5
6
+
2
80MSPS
69MHz @ –1dBFS
SNR = 69.9dB (70.9dBFS)
SFDR = 94.3dBc
Figure 8. AD9231-80 Single-Tone FFT with f
IN
= 69 MHz
0
–15
–30
–45
–60
–75
–90
–105
–120
–135
40 8 12 16 20 24 28 32 36 40
FREQUENCY (MHz)
AMPLITUDE (dBFS)
08121-057
4
3
5
6
+
2
80MSPS
100.3MHz @ –1dBFS
SNR = 69.5dB (70.5dBFS)
SFDR = 87.7dBc
Figure 9. AD9231-80 Single-Tone FFT with f
IN
= 100.3 MHz
0
–15
–30
–45
–60
–75
–90
–105
–120
–135
40 8 12 16 20 24 28 32 36 40
FREQUENCY (MHz)
AMPLITUDE (dBFS)
08121-058
4
3
6
2
5
+
80MSPS
210.3MHz @ –1dBFS
SNR = 67.9dB (68.9dBFS)
SFDR = 83.2dBc
Figure 10. AD9231-80 Single-Tone FFT with f
IN
= 210.3 MHz
0
–15
–30
–45
–60
–75
–90
–105
–120
–135
40 8 12 16 20 24 28 32 36 40
FREQUENCY (MHz)
AMPLITUDE (dBFS)
08121-059
F2 – F1 2F2 – F1
2F1 + F2
F1 + F2
2F2 – F1 2F1 – F2
80MSPS
28.3 @ –7dBFS
30.6 @ –7dBFS
SFDR = 90dBc
Figure 11. AD9231-80 Two-Tone FFT with f
IN1
= 28.3 MHz and f
IN2
= 30.6 MHz