AD9218 Analog Devices, AD9218 Datasheet - Page 14

• Manufacturer Part Number: AD9218
• Description: 10-Bit, 40/65/80/105 MSPS 3 V Dual A/D Converter
• Manufacturer: Analog Devices

Specifications of AD9218

• Resolution (bits): 10bit
• # Chan: 2
• Sample Rate: 105MSPS
• Interface: Par
• Analog Input Type: Diff-Uni
• Ain Range: 1 V p-p,2 V p-p
• Adc Architecture: Pipelined
• Pkg Type: QFP

AD9218
–100
Figure 20. FFT: FS = 31 MSPS, A
–10
–20
–30
–40
–50
–60
–70
–80
–90
80
75
70
65
60
55
50
45
40
35
30
80
75
70
65
60
55
50
45
40
35
30
0
0
0
0
SECOND
Figure 21. Harmonic Distortion (Second and Third) and
Figure 22. Harmonic Distortion (Second and Third) and
ENCODE = 31MSPS
A
SNR = 59.23dB
SINAD = 59.1dB
H2 = –87dB
H3 = –81dB
SFDR vs. A
IN
SFDR vs. A
= 8MHz AT –0.5dBFS
50
50
SECOND
SFDR
SFDR
IN
IN
Frequency (1 V p-p, FS = 105 MSPS)
Frequency (1 V p-p, FS = 80 MSPS)
A
A
1 V p-p Input Range
IN
IN
100
100
FREQUENCY (MHz)
FREQUENCY (MHz)
THIRD
THIRD
IN
= 8 MHz @ –0.5 dBFS, Differential,
150
150
200
200
250
250
15.5
Rev. C | Page 14 of 28
Figure 23. FFT: FS = 31 MSPS, A
–100
–100
–100
–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
0
0
0
ENCODE = 31MSPS
A
SNR = 59dB
SINAD = 58.8dB
H2 = –78.7dB
H3 = –72.9dB
ENCODE = 105MSPS
A
A
SFDR = –67dBFS
ENCODE = 80MSPS
A
A
SFDR = –77dBFS
(30.1 MHz and 31.1 MHz; 1 V p-p, FS = 105 MSPS)
AD8138 Driving ADC Inputs,1 V p-p Input Range
Figure 24. Two-Tone Intermodulation Distortion
Figure 25. Two-Tone Intermodulation Distortion
(29.3 MHz and 30.3 MHz; 1 V p-p, FS = 80 MSPS)
IN
IN
IN
IN
IN
1 = 30.1MHz AT –7dBFS
2 = 31.1MHz AT –7dBFS
1 = 29.3MHz AT –7dBFS
2 = 30.3MHz AT –7dBFS
= 8MHz AT –0.5dBFS
IN
= 8 MHz @ –0.5 dBFS, Differential, with
15.5
52.5
40