AD6657EBZ datasheet(12/32 Pages) AD

12 / 32 page

AD6657

Rev. 0 | Page 12 of 32

TYPICAL PERFORMANCE CHARACTERISTICS

AVDD = 1.8 V, DRVDD = 1.8 V, sample rate = 185 MSPS, 1.75 V p-p differential input, VIN = −1.0 dBFS, 32k sample, TA = 25°C, unless

otherwise noted.

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708090

FREQUENCY (MHz)

SECOND

HARMONIC

THIRD

HARMONIC

fS = 185MSPS

fIN = 30.3MHz @ –1dBFS

SNR = 65.7dB (66.7dBFS)

SFDR = 89.7dBc

Figure 5. Single-Tone FFT with fIN = 30.3 MHz

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FREQUENCY (MHz)

fS = 185MSPS

fIN = 70.3MHz @ –1dBFS

SNR = 65.4dB (66.4dBFS)

SFDR = 86dBc

SECOND

HARMONIC

THIRD

HARMONIC

Figure 6. Single-Tone FFT with fIN = 70.3 MHz

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FREQUENCY (MHz)

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HARMONIC

THIRD

HARMONIC

fS = 185MSPS

fIN = 140.1MHz @ –1dBFS

SNR = 65.3dB (66.3dBFS)

SFDR = 88dBc

Figure 7. Single-Tone FFT with fIN = 140.1 MHz

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FREQUENCY (MHz)

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HARMONIC

THIRD

HARMONIC

fS = 185MSPS

fIN = 200.3MHz @ –1dBFS

SNR = 64.8dB (65.8dBFS)

SFDR = 80dBc

Figure 8. Single-Tone FFT with fIN = 200.3 MHz

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FREQUENCY (MHz)

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HARMONIC

fS = 185MSPS

fIN = 230.3MHz @ –1dBFS

SNR = 64.6dB (65.6dBFS)

SFDR = 86.1dBc

Figure 9. Single-Tone FFT with fIN = 230.3 MHz

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FREQUENCY (MHz)

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HARMONIC

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HARMONIC

fS = 185MSPS

fIN = 140.1MHz @ –1.6dBFS

NSR 22% BW MODE, TW = 28

SNR = 73dB (74.6dBFS) (IN-BAND)

SFDR = 89.7dBc (IN-BAND)

Figure 10. Single-Tone FFT with fIN = 140.1 MHz, NSR Enabled

in 22% BW Mode with Tuning Word = 28

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