AD9629 Analog Devices, AD9629 Datasheet - Page 13

• Manufacturer Part Number: AD9629
• Description: 12-Bit, 20/40/65/80 MSPS, 1.8 V Analog-to-Digital Converter
• Manufacturer: Analog Devices

Specifications of AD9629

• Resolution (bits): 12bit
• # Chan: 1
• Sample Rate: 80MSPS
• Interface: Par
• Analog Input Type: Diff-Uni
• Ain Range: 2 V p-p
• Adc Architecture: Pipelined
• Pkg Type: CSP

AD9629-65
AVDD = 1.8 V; DRVDD = 1.8 V, maximum sample rate, 2 V p-p differential input, 1.0 V internal reference; AIN = −1.0 dBFS, 50% duty
cycle clock, unless otherwise noted.
–105
–120
–135
–105
–120
–135
–105
–120
–135
–15
–30
–45
–60
–75
–90
–15
–30
–45
–60
–75
–90
–15
–30
–45
–60
–75
–90
Figure 17. AD9629-65 Single-Tone FFT with f
0
0
0
Figure 15. AD9629-65 Single-Tone FFT with f
Figure 16. AD9629-65 Single-Tone FFT with f
0
0
0
65MSPS
30.6MHz @ –1dBFS
SNR = 70.2dB (71.2dBFS)
SFDR = 94.1dBc
3
3
3
2
6
6
6
6
+
4
2
9
9
9
+
12
FREQUENCY (MHz)
12
FREQUENCY (MHz)
12
FREQUENCY (MHz)
6
3
15
15
15
4
5
65MSPS
69MHz @ –1dBFS
SNR = 69.9dB (70.9dBFS)
SFDR = 92.0dBc
65MSPS
9.7MHz @ –1dBFS
SNR =70.3 (71.3dBFS)
SFDR = 94.2dBc
18
18
18
+
2
21
21
21
5
5
24
24
24
IN
6
IN
IN
= 30.6 MHz
= 9.7 MHz
= 69 MHz
27
27
27
4
3
30
30
30
3
33
33
33
Rev. 0 | Page 13 of 32
Figure 18. AD9629-65 SNR/SFDR vs. Input Amplitude (AIN) with f
Figure 19. AD9629-65 SNR/SFDR vs. Input Frequency (AIN) with
120
100
100
80
60
40
20
90
80
70
60
50
40
30
20
10
0
–70
0
0
–60
SFDRFS
SNRFS
50
SFDR
–50
SNR
INPUT AMPLITUDE (dBc)
2 V p-p Full Scale
INPUT FREQUENCY (MHz)
–40
SFDR
SNR
100
–30
–20
150
–10
AD9629
IN
200
= 9.7 MHz
0