AD6674 datasheet(16/97 Pages) AD

16 / 97 page

Data Sheet

AD6674

Rev. C | Page 15 of 96

0500

400

300

200

100

FREQUENCY (MHz)

AIN = –1dBFS

SNR = 59.8BFS

ENOB = 9.6 BITS

SFDR = 79dBFS

BUFFER CONTROL 1 = 8.0×

–120

–100

–80

–60

–40

–20

Figure 12. Single Tone FFT with fIN = 1293.3 MHz

500

400

300

200

100

FREQUENCY (MHz)

AIN = –1dBFS

SNR = 57.7dBFS

ENOB = 9.2 BITS

SFDR = 70dBFS

BUFFER CONTROL 1 = 8.0×

–120

–100

–80

–60

–40

–20

Figure 13. Single Tone FFT with fIN = 1725.3 MHz

FREQUENCY (MHz)

–120

–100

–80

–60

–40

–20

100

200

300

400

500

AIN = –1dBFS

SNR = 57.0dBFS

ENOB = 9.1 BITS

SFDR = 69dBFS

BUFFER CURRENT = 6.0×

Figure 14. Single Tone FFT with fIN = 1950.3 MHz

500

400

300

200

100

FREQUENCY (MHz)

AIN = –20dBFS

SNR = 66.5dBFS

ENOB = 10.8 BITS

SFDR = 99dBFS

BUFFER CONTROL 1 = 3.0×

–140

–120

–100

–80

–60

–40

–20

Figure 15. LTE-FDD 10 MHz Channel FFT with fIN = 230 MHz

SAMPLE RATE (MHz)

700

750

800

850

900

950

1000

1050

1100

SNR (dBFS)

SFDR (dBFS)

Figure 16. SNR/SFDR vs. Sample Rate (fS), fIN = 170.3 MHz;

Buffer Control 1 = 3.0×

ANALOG INPUT FREQUENCY (MHz)

10.3

63.3 100.3 170.3 225.3 302.3 341.3 403.3 453.3 502.3

1.5×, SFDR

3.0×, SFDR

3.0×, SNR

1.5×, SNR

Figure 17. SNR/SFDR vs. Analog Input Frequency (fIN);

fIN < 500 MHz; Buffer Control 1 = 1.5× and 3.0×

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