AD9237 Analog Devices, AD9237 Datasheet - Page 12

• Manufacturer Part Number: AD9237
• Description: 12-Bit, 20/40/65 MSPS 3 V Low Power A/D Converter
• Manufacturer: Analog Devices

Specifications of AD9237

• Resolution (bits): 12bit
• # Chan: 1
• Sample Rate: 65MSPS
• Interface: Par
• Analog Input Type: Diff-Uni
• Ain Range: 1 V p-p,2 V p-p,4 V p-p
• Adc Architecture: Pipelined
• Pkg Type: CSP

AD9237
Figure 15. AD9237-65 SNR/SFDR vs. Input Amplitude with f
Figure 16. AD9237-40 SNR/SFDR vs. Input Amplitude with f
–100
–120
–20
–40
–60
–80
100
90
80
70
60
50
40
30
90
80
70
60
50
40
30
0
–30
–30
0
SFDR dBFS 2V p-p
SFDR dBFS 2V p-p
SFDR dBFS 1V p-p
SNR = 65.6dBc
SFDR = 67.1dBc
SFDR dBc 2V p-p
SNR dBFS 2V p-p
SNR dBFS 4V p-p
Figure 14. AD9237-65 100 MHz FFT
–25
–25
5
SNR dBFS 1V p-p
SNR dBc 2V p-p
SNR dBc 4V p-p
SNR dBc 1V p-p
SFDR dBFS 4V p-p
10
INPUT AMPLITUDE (dBFS)
INPUT AMPLITUDE (dBFS)
–20
–20
SFDR dBc 4V p-p
FREQUENCY (MHz)
SFDR dBc 2V p-p
SNR dBc 2V p-p
SNR dBFS 2V p-p
15
–15
–15
20
–10
–10
SFDR dBc 1V p-p
25
–5
–5
IN
IN
= 35 MHz
= 20 MHz
30 32.5
0
0
Rev. A | Page 12 of 24
Figure 18. AD9237-65 SNR/SFDR vs. Input Amplitude with f
Figure 19. AD9237-20 SNR/SFDR vs. Input Amplitude with f
100
90
85
80
75
70
65
60
55
50
90
80
70
60
50
40
30
90
80
70
60
50
40
30
–30
–30
30
SFDR dBFS 1V p-p
SNR dBFS 2V p-p
SFDR dBFS 1V p-p
SFDR DCS
ENABLED
SNR dBFS 1V p-p
SFDR dBFS 2V p-p
Figure 17. SNR/SFDR vs. Clock Duty Cycle
35
–25
–25
SFDR dBFS 2V p-p
SNR dBFS 1V p-p
SNR dBc 1V p-p
SNR dBc 2V p-p
40
SFDR DCS
DISABLED
INPUT AMPLITUDE (dBFS)
INPUT AMPLITUDE (dBFS)
SFDR dBc 2V p-p
–20
–20
45
SFDR dBc 2V p-p
SNR dBc 2V p-p
DUTY CYCLE (%)
SNR dBFS 2V p-p
SNR dBc 1V p-p
–15
–15
50
55
–10
–10
SNR DCS ENABLED
SNR DCS DISABLED
SFDR dBc 1V p-p
SFDR dBc 1V p-p
60
–5
–5
65
IN
IN
= 35 MHz
= 10 MHz
70
0
0