AD9684 Datasheet, PDF (19/64 Pages) Analog Devices – Dual, 14-Bit, 1.25 GSPS, 1.2 V/2.5 V, Analog-to-Digital Converter

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AD9684
TYPICAL PERFORMANCE CHARACTERISTICS
AVDD1 = 1.2 V, AVDD2= 2.5 V, AVDD3 = 3.3 V, DVDD = 1.2 V, DRVDD = 1.2 V, SPIVDD = 1.8 V, sampling rate = 500 MHz, 1.6 V p-p
full-scale differential input, AIN = −1.0 dBFS, default SPI settings, TA = 25°C, 256k FFT sample, unless otherwise noted.
0
0
A_IN = −1dBFS
SNR = 68.9dBFS
–20
ENOB = 10.9 BITS
A_IN = −1dBFS
SNR = 67.3dBFS
–20
ENOB = 10.8 BITS
SFDR = 83dBFS
SFDR = 86dBFS
BUFFER CONTROL 1 = 2.0×
BUFFER CONTROL 1 = 4.5×
–40
–40
–60
–60
–80
–80
–100
–100
–120
–120
–140
0
25 50 75 100 125 150 175 200 225 250
FREQUENCY (MHz)
Figure 12. Single Tone FFT with fIN = 10.3 MHz
–140
0
25 50 75 100 125 150 175 200 225 250
FREQUENCY (MHz)
Figure 15. Single Tone FFT with fIN = 450.3 MHz
0
A_IN = −1dBFS
SNR = 68.7dBFS
–20
ENOB = 10.9 BITS
SFDR = 84dBFS
BUFFER CONTROL 1 = 2.0×
–40
–60
–80
–100
–120
–140
0
25 50 75 100 125 150 175 200 225 250
FREQUENCY (MHz)
Figure 13. Single Tone FFT with fIN = 170.3 MHz
0
A_IN = −1dBFS
SNR = 67.8dBFS
–20
ENOB = 10.8 BITS
SFDR = 82dBFS
BUFFER CONTROL 1 = 4.5×
–40
–60
–80
–100
–120
–140
0
25 50 75 100 125 150 175 200 225 250
FREQUENCY (MHz)
Figure 14. Single Tone FFT with fIN = 340.3 MHz
0
A_IN = −1dBFS
SNR = 63.9dBFS
–20
ENOB = 10.3 BITS
SFDR = 81dBFS
BUFFER CONTROL 1 = 5.0×
–40
–60
–80
–100
–120
–140
0
0
–20
–40
25 50 75 100 125 150 175 200 225 250
FREQUENCY (MHz)
Figure 16. Single Tone FFT with fIN = 765.3 MHz
A_IN = −1dBFS
SNR = 62.8dBFS
ENOB = 10.1 BITS
SFDR = 76dBFS
BUFFER CONTROL 1 = 5.0×
–60
–80
–100
–120
–140
0
25 50 75 100 125 150 175 200 225 250
FREQUENCY (MHz)
Figure 17. Single-Tone FFT with fIN = 985.3 MHz
Rev. 0 | Page 19 of 64