Datasheet

AD9284 Data Sheet
Rev. A | Page 10 of 24
TYPICAL PERFORMANCE CHARACTERISTICS
AVDD = 1.8 V, DRVDD = 1.8 V, sample rate = 250 MSPS, DCS enabled, 1.2 V p-p differential input, VIN = −1.0 dBFS, 64k sample,
T
A
= 25°C, unless otherwise noted.
0
–20
–40
–60
–80
–100
–120
0 25 50 75 100 125
AMPLITUDE (dBFS)
FREQUENCY (MHz)
250MSPS
4.3MHz @ –1dBFS
SNR = 48.3dB (49.3dBFS)
ENOB = 7.7
SFDR = 70.3dBc
SECOND HARMONIC
THIRD HARMONIC
09085-107
Figure 4. Single-Tone FFT with f
IN
= 4.3 MHz
0
–20
–40
–60
–80
–100
–120
0 25 50 75 100 125
AMPLITUDE (dBFS)
FREQUENCY (MHz)
250MSPS
330.3MHz @ –1dBFS
SNR = 48.2dB (49.2dBFS)
ENOB = 7.6
SFDR = 60.9dBc
SECOND HARMONIC
THIRD HARMONIC
09085-108
Figure 5. Single-Tone FFT with f
IN
= 220.3 MHz
80
60
70
50
40
30
20
10
0
–45 0–5–10–15–20–25–30–35–40
SFDR/SNR (dB)
AIN POWER (dBFS)
SFDR (dBFS)
SNR (dBFS)
SFDR (dBc)
SNR (dBc)
REFERENCE LINE
09085-109
Figure 6. SFDR/SNR vs. Input Amplitude (AIN) with f
IN
= 2.2 MHz
0
–20
–40
–60
–80
–100
–120
0 25 50 75 100 125
AMPLITUDE (dBFS)
FREQUENCY (MHz)
250MSPS
96.6MHz @ –1dBFS
SNR = 48.3dB (49.3dBFS)
ENOB = 7.7
SFDR = 70.0dBc
SECOND HARMONIC
THIRD HARMONIC
09085-110
Figure 7. Single-Tone FFT with f
IN
= 96.6 MHz
0
–20
–40
–60
–80
–100
–120
0 25 50 75 100 125
AMPLITUDE (dBFS)
FREQUENCY (MHz)
250MSPS
29.2MHz @ –7dBFS
32.2MHz @ –7dBFS
SFDR = 69.6dBc (76.6dBFS)
09085-111
Figure 8. Two-Tone FFT with f
IN1
= 29.1 MHz and f
IN2
= 32.1 MHz
80
60
70
50
40
30
20
10
0
–45 0–5–10–15–20–25–30–35–40
SFDR/IMD3 (dB)
AIN POWER (dBFS)
IMD3 (dBFS)
SFDR (dBFS)
IMD3 (dBc)
SFDR (dBc)
09085-112
Figure 9. Two-Tone SFDR/IMD3 vs. Input Amplitude (AIN)
with f
IN1
= 29.1 MHz and f
IN2
= 32.1 MHz