AD9628 Analog Devices, AD9628 Datasheet - Page 20

• Manufacturer Part Number: AD9628
• Description: 12-Bit, 125/105 MSPS, 1.8 V Dual Analog-to-Digital Converter
• Manufacturer: Analog Devices

Specifications of AD9628

• Resolution (bits): 12bit
• # Chan: 2
• Sample Rate: 125MSPS
• Interface: LVDS,Par
• Analog Input Type: Diff-Bip,SE-Uni
• Ain Range: 2 V p-p
• Adc Architecture: Pipelined
• Pkg Type: CSP

AD9628
–105
–120
–135
100
120
100
Figure 15. SNR/SFDR vs. Input Frequency (AIN) with 2 V p-p Full Scale
–15
–30
–45
–60
–75
–90
95
90
85
80
75
70
65
60
55
50
80
60
40
20
0
0
0
5
Figure 14. Two-Tone FFT with f
Figure 16. SNR/SFDR vs. Sample Rate with AIN = 9.7 MHz
+
15
6
25
50
12
ANALOG INPUT FREQUENCY (MHz)
35
18
45
SAMPLE RATE (MSPS)
2F1 – F2
FREQUENCY (MHz)
100
24
SNR (dBFS)
SFDR (dBc)
55
SNRFS AT 25°C
65
30
IN1
= 29 MHz and f
75
150
36
2F1 + F2
2F2 – F1
85
SFDR AT 25°C
42
95
IN2
200
48
105 115 125
= 32 MHz
54
60
250
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Figure 17. Two-Tone SFDR/IMD3 vs. Input Amplitude (AIN) with f
–100
–120
–20
–40
–60
–80
120
100
100
90
80
70
60
50
40
30
20
10
80
60
40
20
0
0
Figure 18. SNR/SFDR vs. Input Amplitude (AIN) with f
0
– 70
–70
5
IMD3 (DBFS)
Figure 19. SNR/SFDR vs. Sample Rate with AIN = 70 MHz
SFDRFS
IMD3 (dBc)
SFDR (dBFS)
SNRFS
15
SFDR
SFDR (dBc)
–60
– 60
25
35
SNR
–50
– 50
INPUT AMPLITUDE (dBFS)
INPUT AMPLITUDE (dBFS)
45
SAMPLE RATE (MSPS)
and f
SFDR (dBc)
SNR (dBFS)
55
–40
IN2
– 40
= 32 MHz
65
–30
75
– 30
85
–20
95
–20
IN
105 115 125
= 9.7 MHz
–10
IN1
= 29 MHz
–10
0