AD9284 Analog Devices, AD9284 Datasheet - Page 10

• Manufacturer Part Number: AD9284
• Description: 8-Bit, 250 MSPS, 1.8 V Dual Analog-to-Digital Converter (ADC)
• Manufacturer: Analog Devices

Specifications of AD9284

• Resolution (bits): 8bit
• # Chan: 2
• Sample Rate: 250MSPS
• Interface: Par
• Analog Input Type: Diff-Bip,SE-Uni
• Adc Architecture: Pipelined
• Pkg Type: CSP

AD9284
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.
–100
–120
–20
–40
–60
–80
–100
–120
0
Figure 6. SFDR/SNR vs. Input Amplitude (AIN) with f
–20
–40
–60
–80
0
80
70
60
50
40
30
20
10
0
250MSPS
330.3MHz @ –1dBFS
SNR = 48.2dB (49.2dBFS)
ENOB = 7.6
SFDR = 60.9dBc
0
–45
0
REFERENCE LINE
THIRD HARMONIC
Figure 5. Single-Tone FFT with f
THIRD HARMONIC
Figure 4. Single-Tone FFT with f
SECOND HARMONIC
–40
SFDR (dBFS)
25
25
–35
SNR (dBFS)
–30
FREQUENCY (MHz)
FREQUENCY (MHz)
AIN POWER (dBFS)
50
50
–25
SNR (dBc)
SFDR (dBc)
–20
250MSPS
4.3MHz @ –1dBFS
SNR = 48.3dB (49.3dBFS)
ENOB = 7.7
SFDR = 70.3dBc
75
75
IN
IN
–15
= 220.3 MHz
= 4.3 MHz
SECOND HARMONIC
–10
100
100
IN
= 2.2 MHz
–5
125
0
125
Rev. 0 | Page 10 of 24
–100
–120
–100
–120
Figure 8. Two-Tone FFT with f
–20
–40
–60
–80
–20
–40
–60
–80
80
70
60
50
40
30
20
10
0
0
Figure 9. Two-Tone SFDR/IMD3 vs. Input Amplitude (AIN)
0
–45
0
0
250MSPS
96.6MHz @ –1dBFS
SNR = 48.3dB (49.3dBFS)
ENOB = 7.7
SFDR = 70.0dBc
Figure 7. Single-Tone FFT with f
IMD3 (dBc)
–40
with f
THIRD HARMONIC
SFDR (dBFS)
25
25
IMD3 (dBFS)
–35
IN1
= 29.1 MHz and f
–30
FREQUENCY (MHz)
FREQUENCY (MHz)
AIN POWER (dBFS)
50
50
SECOND HARMONIC
–25
IN1
SFDR (dBc)
= 29.1 MHz and f
–20
250MSPS
29.2MHz @ –7dBFS
32.2MHz @ –7dBFS
SFDR = 69.6dBc (76.6dBFS)
IN2
75
75
= 32.1 MHz
IN
–15
= 96.6 MHz
–10
100
100
IN2
= 32.1 MHz
–5
125
125
0