AD9481 Analog Devices, AD9481 Datasheet - Page 12

• Manufacturer Part Number: AD9481
• Description: 8-Bit, 250 MSPS, 3.3 V A/D Converter
• Manufacturer: Analog Devices

Specifications of AD9481

• Resolution (bits): 8bit
• # Chan: 1
• Sample Rate: 250MSPS
• Interface: Par
• Analog Input Type: Diff-Uni
• Ain Range: (Vref) p-p,1 V p-p
• Adc Architecture: Pipelined
• Pkg Type: QFP

AD9481
TYPICAL PERFORMANCE CHARACTERISTICS
AVDD, DRVDD = 3.3 V, T = 25°C, A
Figure 6. FFT: f
–10
–20
–30
–40
–50
–60
–70
–80
–90
–10
–20
–30
–40
–50
–60
–70
–80
–90
–10
–20
–30
–40
–50
–60
–70
–80
–90
0
0
0
Figure 4. FFT: f
0
0
0
Figure 5. FFT: f
S
= 250 MSPS, A
20
20
20
S
S
= 250 MSPS, A
= 250 MSPS, A
40
40
40
IN
= 70 MHz @ −1 dBFS, Single-Ended Input
(MHz)
(MHz)
(MHz)
60
60
60
IN
IN
= 10.3 MHz @ −1 dBFS
= 70 MHz @ −1 dBFS
IN
differential drive, FS = 1, internal reference mode, unless otherwise noted.
80
80
80
SNR = 45.8dB
H2 = –65.2dBc
H3 = –63.2dBc
SFDR = 63.2dBc
SNR = 45.8dB
H2 = –68.5dBc
H3 = –63.5dBc
SFDR = 63.8dBc
SNR = 45.9dB
H2 = –66.6dBc
H3 = –70.1dBc
SFDR = 65.9dBc
100
100
100
120
120
120
Rev. 0 | Page 12 of 28
A
–10
–20
–30
–40
–50
–60
–70
–80
–90
90
85
80
75
70
65
60
55
50
45
40
90
85
80
75
70
65
60
55
50
45
40
IN
0
=−1 dBFS, FS = 0.75 V, f
Figure 7. FFT: f
0
0
0
Figure 8. Analog Input Frequency Sweep,
Figure 9. Analog Input Frequency Sweep,
50
50
A
20
IN
SFDR
= −1 dBFS, FS = 1 V, f
100
100
S
= 250 MSPS, A
SFDR
H3
40
150
150
S
SNR
H3
= 250 MSPS, External VREF Mode
A
A
IN
IN
(MHz)
60
200
200
(MHz)
(MHz)
SNR
IN
= 170 MHz @ −1 dBFS
S
SINAD
= 250 MSPS
H2
H2
SINAD
250
250
80
300
300
SNR = 45.6dB
H2 = –72.9dBc
H3 = –65.2dBc
SFDR = 59.6dBc
100
350
350
120
400
400