AD9251 Analog Devices, AD9251 Datasheet - Page 16

• Manufacturer Part Number: AD9251
• Description: 14-Bit, 20 MSPS/40 MSPS/65 MSPS/80 MSPS, 1.8 V Dual Analog-to-Digital Converter
• Manufacturer: Analog Devices

Specifications of AD9251

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

AD9251
AD9251-40
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, DCS
disabled, unless otherwise noted.
–105
–120
–105
–120
–15
–30
–45
–60
–75
–90
–15
–30
–45
–60
–75
–90
0
0
40MSPS
9.7MHz @ –1dBFS
SNR = 73.5dB (74.5dBFS)
SFDR = 95.4dBc
40MSPS
30.5MHz @ –1dBFS
SNR = 73.2dB (74.2dBFS)
SFDR = 95.7dBc
4
Figure 24. Single-Tone FFT with f
Figure 23. Single-Tone FFT with f
2
2
4
4
4
6
6
FREQUENCY (MHz)
FREQUENCY (MHz)
5
8
8
5
10
10
3
3
12
12
IN
IN
= 30.5 MHz
= 9.7 MHz
14
14
16
16
6
18
18
6
2
2
Rev. A | Page 16 of 36
Figure 25. SNR/SFDR vs. Input Amplitude (AIN) with f
120
100
80
60
40
20
0
–90
–80
SNRFS
INPUT AMPLITUDE (dBFS)
–60
SFDR
SFDRFS
–40
SNR
–20
IN
= 9.7 MHz
0