AD6657ABBCZ datasheet(16/37 Pages) AD

16 / 37 page

Data Sheet

AD6657A

Figure 11. Single Tone FFT, fIN = 247.3 MHz

Figure 12. Single Tone FFT, fIN = 305.3 MHz

Figure 13. Single Tone FFT, fIN = 140.3 MHz, NSR Enabled

in 22% BW Mode, Tuning Word = 28

Figure 14. Single Tone FFT, fIN = 230.3 MHz, NSR Enabled

in 33% BW Mode, Tuning Word = 17

Figure 15. Single Tone FFT, fIN = 230.3 MHz, NSR Enabled

in 36% BW Mode, Tuning Word = 14

Figure 16. Single Tone SNR/SFDR vs. Input Amplitude (AIN),

fIN = 70.3 MHz

–20

–40

–60

–80

–100

–120

9.25 18.50 27.75 37.00 46.25 55.50 64.75 74.00 83.25 92.50

FREQUENCY (MHz)

THIRD HARMONIC

SECOND HARMONIC

185MSPS

247.3MHz @ –1dBFS

SNR = 66dB (65dBFS)

SFDR = 83dBc

–20

–40

–60

–80

–100

–120

9.25 18.50 27.75 37.00 46.25 55.50 64.75 74.00 83.25 92.50

FREQUENCY (MHz)

THIRD HARMONIC

SECOND HARMONIC

185MSPS

305.3MHz @ –1dBFS

SNR = 64.9dB (65.9dBFS)

SFDR = 80dBc

–20

–40

–60

–80

–100

–120

–140

9.25 18.50 27.75 37.00 46.25 55.50 64.75 74.00 83.25 92.50

FREQUENCY (MHz)

THIRD HARMONIC

185MSPS

140.3MHz @ –1dBFS

NSR 22% BW MODE, TW = 28

SNR = 73.4dB (74.9dBFS)

SFDR = 91dBc

–20

–40

–60

–80

–100

–120

–140

9.25 18.50 27.75 37.00 46.25 55.50 64.75 74.00 83.25 92.50

FREQUENCY (MHz)

THIRD HARMONIC

SECOND HARMONIC

185MSPS

230.3MHz @ –1dBFS

NSR 33% BW MODE, TW = 17

SNR = 70.8dB (72.5dBFS)

SFDR = 93.7dBc

–20

–40

–60

–80

–100

–120

–140

9.25 18.50 27.75 37.00 46.25 55.50 64.75 74.00 83.25 92.50

FREQUENCY (MHz)

185MSPS

230.3MHz @ –1dBFS

NSR 36% BW MODE, TW = 14

SNR = 70.3dB (71.3dBFS)

SFDR = 93.4dBc

THIRD HARMONIC

100

INPUT AMPLITUDE (dBFS)

SNR (dBc)

SFDR (dBc)

SNR (dBFS)

SFDR (dBFS)

Rev. A | Page 15 of 36

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