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AD9680 Datasheet(PDF) 25 Page - Analog Devices

Part # AD9680
Description  Dual, 14-Bit, 1.25 GSPS, 1.2 V/2.5 V, Analog-to-Digital Converter
PDF  97 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD9680 Datasheet(HTML) 25 Page - Analog Devices

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Product
Overview
Online
Documentation
Design
Resources
Discussion
Sample
& Buy
Data Sheet
AD9680
Rev. C | Page 25 of 97
FREQUENCY (MHz)
–120
–100
–80
–60
–40
–20
0
0
82
164
246
328
410
AIN = –1dBFS
SNR = 62.0dBFS
ENOB = 9.9 BITS
SFDR = 76dBFS
BUFFER CONTROL 1 = 6.5×
Figure 61. Single-Tone FFT with fIN = 1205.3 MHz
FREQUENCY (MHz)
–120
–100
–80
–60
–40
–20
0
0
82
164
246
328
410
AIN = –1dBFS
SNR = 60.5dBFS
ENOB = 9.5 BITS
SFDR = 68dBFS
BUFFER CONTROL 1 = 7.5×
Figure 62. Single-Tone FFT with fIN = 1720.3 MHz
FREQUENCY (MHz)
–120
–100
–80
–60
–40
–20
0
0
82
164
246
328
410
AIN = –1dBFS
SNR = 59.7dBFS
ENOB = 9.5 BITS
SFDR = 69dBFS
BUFFER CONTROL 1 = 8.5×
Figure 63. Single-Tone FFT with fIN = 1950.3 MHz
SAMPLE RATE (MHz)
50
55
60
65
70
75
80
85
90
500
550
600
650
700
750
800
850
900
SNR
SFDR
Figure 64. SNR/SFDR vs. fS, fIN = 170.3 MHz;
Buffer Control 1 (0x018) = 3.0×
ANALOG INPUT FREQUENCY (MHz)
50
55
60
65
70
75
80
85
90
95
SFDR (3.0×)
SNR (3.0×)
Figure 65. SNR/SFDR vs. fIN; fIN < 450 MHz;
Buffer Control 1 (0x018) = 3.0×
ANALOG INPUT FREQUENCY (MHz)
50
55
60
65
70
75
80
85
450.3
480.3
510.3
515.3
610.3
766.3
810.3
985.3
SFDR (6.5×)
SNR (6.5×)
Figure 66. SNR/SFDR vs. fIN; 450 MHz < fIN < 1 GHz;
Buffer Control 1 (0x018) = 6.5×



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