AD6659 datasheet(12/40 Pages) AD

12 / 40 page

AD6659

Rev.

| Page 12 of

TYPICAL PERFORMANCE CHARACTERISTICS

AVDD = 1.8 V; DRVDD = 1.8 V, maximum sample rate, 2 V p-p differential input, 1.0 V internal reference; AIN = −1.0 dBFS,

DCS disabled, unless otherwise noted.

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1015

2025303540

FREQUENCY (MHz)

80MSPS

9.7MHz @ –1dBFS

SNR = 70.2dB (71.2dBFS)

SFDR = 93.6dBc

Figure 6. Single-Tone FFT with fIN = 9.7 MHz

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2025303540

FREQUENCY (MHz)

80MSPS

30.6MHz @ –1dBFS

SNR = 71.4 dB (72.4dBFS)

SFDR = 94.4dBc

Figure 7. Single-Tone FFT with fIN = 30.6 MHz

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2025303540

FREQUENCY (MHz)

80MSPS

69MHz @ –1dBFS

SNR = 70dB (71dBFS)

SFDR = 88.9dBc

Figure 8. Single-Tone FFT with fIN = 69 MHz

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FREQUENCY (MHz)

80MSPS

100.3MHz @ –1dBFS

SNR = 70.5dB (71.5dBFS)

SFDR = 83.5dBc

Figure 9. Single-Tone FFT with fIN = 100.3 MHz

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FREQUENCY (MHz)

F2 – F1

2F2 – F1

2F1 + F2

F1 + F2

2F2 – F1

2F1 – F2

80MSPS

28.3MHz @ –7dBFS

30.6MHz @ –7dBFS

SFDR = 87.9dBc

Figure 10. Two-Tone FFT with fIN1 = 28.3 MHz and fIN2 = 30.6 MHz

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INPUT AMPLITUDE (dBFS)

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SFDR (dBc)

SFDR (dBFS)

IMD3 (dBc)

IMD3 (dBFS)

Figure 11. Two-Tone SFDR/IMD3 vs. Input Amplitude (AIN) with

fIN1 = 28.3 MHz and fIN2 = 30.6 MHz

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