AD6655 datasheet(25/84 Pages) AD

25 / 84 page

AD6655

Rev. 0 | Page 25 of 84

FREQUENCY (MHz)

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035

150MSPS

445.1MHz @ –1dBFS

SNR = 67.4dBc (65.4dBFS)

SFDR = 74.1dBc

fNCO = 429MHz

SECOND HARMONIC

THIRD HARMONIC

FREQUENCY (MHz)

Figure 25. AD6655-150 Single-Tone FFT with fIN = 445.1 MHz, fNCO = 429 MHz

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125MSPS

2.4MHz @ –1dBFS

SNR = 74.5dBc (75.5dBFS)

SFDR = 87.8dBc

fNCO = 15.75MHz

SECOND HARMONIC

THIRD HARMONIC

FREQUENCY (MHz)

Figure 26. AD6655-125 Single-Tone FFT with fIN =2.4 MHz, fNCO = 15.75 MHz

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FREQUENCY (MHz)

125MSPS

70.3MHz @ –1dBFS

SNR = 74.6dBc (75.6dBFS)

SFDR = 86.1dBc

fNCO = 78MHz

THIRD HARMONIC

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FREQUENCY (MHz)

125MSPS

30.3MHz @ –1dBFS

SNR = 74.7dBc (75.7dBFS)

SFDR = 89.6dBc

fNCO = 21MHz

THIRD

HARMONIC

Figure 27. AD6655-125 Single-Tone FFT with fIN = 30.3 MHz, fNCO = 21 MHz

Figure 28. AD6655-125 Single-Tone FFT with fIN = 70.3 MHz, fNCO = 78 MHz

125MSPS

140.1MHz @ –1dBFS

SNR = 74.1dBc (75.1dBFS)

SFDR = 90.3dBc

fNCO = 142MHz

THIRD HARMONIC

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FREQUENCY (MHz)

Figure 29. AD6655-125 Single-Tone FFT with fIN = 140.1 MHz, fNCO = 142 MHz

125MSPS

220.1MHz @ –1dBFS

SNR = 73.4dBc (74.4dBFS)

SFDR = 90.2dBc

fNCO = 231MHz

Figure 30. AD6655-125 Single-Tone FFT with fIN = 220.1 MHz, fNCO = 231 MHz

AD6655 Datasheet(PDF) 25 Page - Analog Devices

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