AD9649 Analog Devices, AD9649 Datasheet - Page 13

• Manufacturer Part Number: AD9649
• Description: 14-Bit, 20/40/65/80 MSPS, 1.8 V Analog-to-Digital Converter
• Manufacturer: Analog Devices

Specifications of AD9649

• Resolution (bits): 14bit
• # Chan: 1
• Sample Rate: 80MSPS
• Interface: Par
• Analog Input Type: Diff-Uni
• Ain Range: 2 V p-p
• Adc Architecture: Pipelined
• Pkg Type: CSP

AD9649
AD9649-65
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
–105
–120
–105
–120
–15
–30
–45
–60
–75
–90
–15
–30
–45
–60
–75
–90
–15
–30
–45
–60
–75
–90
Figure 17. AD9649-65 Single-Tone FFT with f
Figure 18. AD9649-65 Single-Tone FFT with f
Figure 16. AD9649-65 Single-Tone FFT with f
0
0
0
65MSPS
30.5MHz @ –1dBFS
SNR = 73.3dB (74.3dBFS)
SFDR = 99.3dBc
3
3
3
2
6
6
6
6
4
9
9
9
2
FREQUENCY (MHz)
FREQUENCY (MHz)
12
FREQUENCY (MHz)
12
12
6
15
15
15
3
5
18
18
18
65MSPS
70.3MHz @ –1dBFS
SNR = 72.6dB (73.6dBFS)
SFDR = 94.1dBc
65MSPS
9.7MHz @ –1dBFS
SNR = 73.5dB (74.5dBFS)
SFDR = 97.7dBc
2
21
21
21
4
5
24
24
24
IN
IN
IN
= 70.3 MHz
= 30.5 MHz
= 9.7 MHz
5
27
4
3
27
27
3
30
30
30
6
Rev. 0 | Page 13 of 32
Figure 19.AD9649-65 SNR/SFDR vs. Input Amplitude (AIN) with f
120
100
100
80
60
40
20
90
80
70
60
50
40
30
20
10
0
0
Figure 20. AD9649-65 SNR/SFDR vs. Input Frequency (AIN)
–90
0
–80
SNRFS
50
with 2 V p-p Full Scale
INPUT AMPLITUDE (dBFS)
INPUT FREQUENCY (MHz)
–60
SFDR
SNR (dBFS)
SFDRFS
100
–40
SFDR (dBc)
SNR
150
–20
IN
= 9.7 MHz
200
0